Stratigraphic sections of the Phosphoria formation measured and sampled in 1951

Cheney, Thomas McGiffin, Peterson, J.A., Warner, M.A., Smart, R.A.

Stratigraphic sections of the Phosphoria formation measured and sampled in 1951

Cheney, Thomas McGiffin, Peterson, J.A., Warner, M.A., Smart, R.A. · 1952 · Report

<p>The first four of a series of reports giving detailed stratigraphic sections and analyses of samples of the Phosphoria formation in the western phosphate…

Public-domain full text preserved in the Mountain Man Mining Library. Original source: pubs.usgs.gov.

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no. 155,1952

USGS L BRARY RE ON 1 1 11 11 11 111 UNITED STATES 3 1818' 00049048 0 APARTMENT OF THE INTERIOR 1,4,,S GEOLOGICAL SURVEY fq- STRATIGRAPHIC SECTIONS OF THE PHOSPHORIA FOREATION MEASURED AND SAMPLED IN 1951 by T. M. Cheney, J. A. Peterson, M. A. Warner, R. A. Smart, R. G. Waring, and R. P. Sheldon This report is preliminary and has not been edited or reviewed for conformity with U. S. Geological Survey standards and nomenclature. MINERAL DEPOSITS BRANCH Spokane, Washington July, 1952 OPEN FILE

TABLE OF CONTENTS Lot no. Page Introduction Abstracts of sections Montana La Marche Gulch 13660000000060000000000000 lk Idaho Wyoming Utah North Boulder Creek 1364.00000 0 Three Forks 1356.0 0...0..0 Logan 1367 0000000 Jefferson Canyon 1355...0 OOOOOOOOOOOOO Sappington 1.3570.000000600.0.000 00 South Boulder Creek 1365 0 OOOOOOOOOOOO Canyon Creek No. 3 1359 00..0. OOOOOOOOOOOOOOO North Big Hole Canyon South Big Hole No. 1 1354e.octocrono004,o OOOOOOOOOOOOOO South Big Hole No. 2 1354 OOOO OOOOOOO Indian Creek 1362..0 Cinnabar Mountain Landon Ridge Bear Creek Fort Hall Snowdrift Mountain 13720...0000.0 Mud Spring 13510 0. Red Creek 1368.0.00 Forellen Peak Hungry Creek 1375 OOOOOOOOOOOOOOOOO Teton Pass 1370 OOOOOOOOOOOOO Steer Creek 1352...0 Cumberland 1346 0 0 00000000 OOOOOOOOOOOOOOOOO Devils Slide 1345.0.0000000000.00000 Sols Canyon Fort Douglas 1350..0000000000000000000000 Pinon Canyon 1.347e0o00000000000000600000 Strawberry Valley 1371 Little Diamond Creek 13760000000000060000000600000 701'1' Providence Canyon

INTRODUCTION The first four of a series of reports giving detailed stratigraphic sections and analyses of samples of the Phosphoria formation in the western phosphate field as described and sampled by the U. S. Geological Survey will soon be published as Circulars 208 through 211. Because of the needs of industry for many of these data during the 1951 field season, and owing to unavoidable delays attendant on publication, the tabular data prepared for these four and for two additional circulars 2, as yet unnumbered, were McKelvey, Swanson, R. W., and O'Malley, F. W. et al, Stratigraphic sections of the Phosphoria formation in Idaho (3 reports), Montana, Wyoming, and Utahs U. S. Geol. Survey open file reports, 1951. released on open file without texts or maps last year. These six reports constitute a summary of all the sampling done by the U. S. Geological Survey in the western phosphate field during 1947 and 1948. The analytical returns on the samples collected during 1949, 1950, and 1951 were incomplete at that time. However, in keeping with the objectives outlined above, abstracts of the stratigraphic units and P205 and acid insoluble analyses of the phosphatic parts of the sections measured and sampled during 1949 and 1950 were released on open file as two reports so that early use might be made of the most important economic data collected during this field work. This is a similar report covering the 1951 field season data. The data in these three open file reports are being prepared for publication in circulars like the six reports mentioned above. These reports, as well as others referred to, are placed on open file at the offices of the U. S. Geological Survey in Washington, D. C.; Spokane, Washington; Salt Lake City, Utah; and Montpelier, Idaho (open from May to October), and at the offices of the Idaho Bureau of Mines and Geology, Moscow, Idaho; the Montana Bureau of Mines and Geology, Butte, Montana; the Wyoming Geological Survey, Laramie, Wyoming; and the University of Utah, Salt Lake City, Utah.

NORTH BOULDER CREEK, MONTANA, LOT NUMBER 1364 Phosphoria formation measured and sampled in natural exposure on north side of road in NEi sec. 4, T. 2 N., R. 2 W., Jefferson County, Montana. Beds strike N. 200 W. and dip 45° NE. Section measured by R. F, Gosman and sampled by J. 4.A. Peterson in August 1951. Samples analyzed for P205 andi acid insoluble by U. S. Bureau of Mines Laboratory, Albany, Oregon. BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE Ellis formation--basal bed only Ma 4Mb Je-1 Conglomerate N.S. Phosphoria formation MO Oa P-30 Quartzite N.S. P-29 Chert N.S. P-28 Chert, sandy N.S. CMIUM, 11.0M11 =000 P-27 Mudstone, cherty N.S. 41MSOM !IMAM. P-26 Chert N.S. OM OW P-25 Quartzite N.S. P-24 Mudstone, cherty N.S. P-23 Chert and cherty mudstcne N,S. P-22 Chert, phosphatic 5533-RFG P-21 Mudctone, cherty N.S. P-20 Chert, phosphatic 5532-RFG P-19 Mudstone, cherty N.S. P-18 Chert 5531-RFG P-17 Covered N.S. P-16 Quartzite N.S. P-15 Chert and quartzite N.S. P-14 Quartzite, cherty N.S. P-13 Chert, sandy N.S. UNO.OM 4M1.01, P-12 Sandstone, argillaceous N.S. P-11 Dolomite, sandy N.S. P-10 Mudstone N.S. P- 9 Sandstone, argillaceous, VMS WOO calcareous N.S. P- 8 Mudstone, sandy N.S. P- 7 Sandstone, calcareous NcS. P- 6 Mudstone and sandstone N.S. OM OM P- 5 Sandstone N.S. P- 4 Quartzite N.S. P- 3 Mudstone, sandy, and calcareous sandstone N.S. Quartzite and calcareous sandstone N.S.

BED NO. ROCK DESCRIPTION SAMPLE THICKNESS NO. (FEET) ACID P205 INSOLUBLE P- 1 Mudstone, calcareous N O S. Total thickness of Phosphoria formation Quadrant formation--top bed only Q- 1 Quartzite N.S.

THREE FORKS, MONTANA, LOT NUMBER 1356 Phosphoria formation measured and sampled in natural exposure at north end of Milligan Canyon about 300 feet east of Willow Creek road, sec. 24, T. 2 N., R. 1 W., Jefferson Canyon, Montana. Beds strike N. 800 E. and dip 250 N. Section measured by J. A. Peterson and sampled by R. F. Gosman in June 1951. Samples analyzed for P205 and acid insoluble by U. S. Bureau of Mines Laboratory, Albany, Oregon. BED NO. ROCK DESCRIPTION SAMPLE NO. THICKNESS (FEET) P205 ACID INSOLUBLE Ellis formation--basal bed only Je-1 Conglomerate; fos. col. no. 12698 N.S. N.M. .111,111M Phosphoria formation P-29 P-28 P-27 P-26 P-25 Quartzite Mudstone, cherty Phosphate rock, cherty Chert Mudstone, phosphatic N.S. N.S. 5405-JAP N.S. N O S.

P-24 P-23 P-22 P-21 P-20 Limestone Chert Phosphate rock, argillaceous Mudstone, cherty Phosphate rock, cherty, sandy N.S. N.S. 5404-JAP N.S. 5403-JAP

P-19 P-18 P-17 P-16 P-15 Chert and dolomite Chert Chert Chert and limestone Chert, phosphatic N.S. N.S. N.S. N.S. 5402-JAP

P-14 P-13 P-12 P-11 P-10 Phosphate rock, argillaceous Dolomite Chert Chert, phosphatic Dolomite 5401-JAP N.S. N.S. 5400-JAP N.S. rf OINI

,MD OM P- 9 P- 8 P- 7 P- 6 P- 5 Sandstone and dolomite Limestone and chert Sandstone and quartzite Limestone and chert Dolomite, cherty N.S. NOS. N.S. N.S. N.S.

P- 4 P- 3 P- 2 P- 1 Quartzite Dolomite Quartzite Mudstone, calcareous N.S. N.S. N.S. N.S.

Total thickness of Phosphoria formation

BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE Quadrant formation--top bed only Q- 1 Quartzite N.S.

LOGAN, MONTANA, LOT NUMBER 1367 Phosphoria formation measured and sampled along ridge on east side of road, sec. 26, T. 2 N., R. 2 E., about 1 mile northwest of Logan, Montana* EEds strike N. 700 E. and dip 200 N. Section measured by R. W. Swanson and J. A. Peterson and sampled by Swanson in September 1951. Samples analyzed for P205 and acid insoluble by U. S. Bureau of Mines Laboratory, Albany, Oregon, BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE Ellis formation--basal bed only Je-1 Conglomerate N.S. Phosphoria formation--top contact approximately located P-23 Sandstone, quartzitic N.S. P-22 Quartzite N.S. OMB fIMII P-21 Quartzite N.S. P-20 Sandstone, quartzitic N.S. P-19 Limestone, chert, and sandstone N.S. P-18 Chert and mudstone N.S. P-17 Limestone and chert N.S. P-16 Mudstone, calcareous, and chert 5593-RAS P-15 Chert and calcareous mudstone 5592-RWS P-14 Mudstone, calcareous, and chert 5591-RWS P-13 Quartzite N.S. P-12 Chert and limestone N.S. P-11 Quartzite, phosphatic N.S. 411.0MO. P-10 Limestone and quartzite N.S. P- 9 Chert and quartzite N.S. 1,6 P- 8 Chert and quartzite N.S. .M.1 P- 7 Mudstone, calcareous N.S. OM, CEO P- 6 Dolomite, argillaceous N.S. P- 5 Mudstone, calcareous N.S. P- 4 Limestone, argillaceous N.S. ONO P- 3 Limestone, cherty LS. P- 2 Quartzite, cherty; fos. col. no. N.S.

IMO MO P- 1 Sandstone, calcareous, quartzitic N.S. Total thickness of Phosphoria formation

JEFFERSON CANYOL, MONTANA, LOT NUMBER 1355 Phosphoria formation measured and sampled in natural exposure and hand trench about 200 feet above river on west side of Jeferson Canyon in SELi sec. 13, T. 1 N., R. 3 W., Madison County, Montana. Beds strike N. 45° E. and dip 450 NW. Section measured by J. A. Peterson and sampled by R. F. Gosman in June 1951. Samples analyzed for P205 and acid insoluble by U. S. Bureau of Mines Laboratory, Albany, Oregon. BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE Ellis formation--basal bed only ,111.1. Je-1 Sandstone, conglomeratic N.S. Phosphoria formation 111.1,011, P-31 Chert N.S. - OMMO. P-30 Quartzite and chert N.S. MOM= P-29 Chert and quartzite N.S P-28 Chert and mudstone NOS, P-27 Chert N.S. P-26 Quartzite N.S. P-25 Chert N.S. P-24 Quartzite and phosphatic (?) quartzite N.S. P-23 Chert, sandy N.S. P-22 Quartzite NOD OMB P-21 Quartzite and chert N.S. P-20 Sandstone, phosphatic 5384-JAP P-19 Chert N„S„ P-18 Phosphate rock, cherty 5383-JAP P-17 Chert N.S. AMMO.. P-16 Chert, phosphatic 5382-JAP P-15 Chert N.S. P-14 Chert, phosphatic 5381-JAP P-13 Limestone and chert N.S. P-12 Chert and cherty dolomite N.S. P-11 Mudstone, phosphatic 5380-JAP P-10 Chert, argillaceous 5379-JAP P- 9 Phosphate rock, cherty 5378-JAP P- 8 Mudstone, cherty 6377-JAP P- 7 Phosphate rock, argillaceous 5376-JAP P- 6 Mudstone 5375-JAP P- 5 Chert N.S, 111. OMR OW OW P- 4 Quartzite; fos. col. no. 12693 5374-JAP P- 3 Mudstone N.S.

BED NO. ROCK DESCRIPTION SAMPLE THICKNESS NO. (FEET) ACID P205 INSOLUBLE P- 2 P- 1 Sandstone, conglomeratic, phosphatic Sandstone, chert, and conglomerate N.S. N.S. Total thickness of Phosphoria formation Quadrant formation--top bed only Q- 2 Dolomite N.S. N.M.

SAPPINGTON CANYON, MONTANA, LOT NUMBER 1357 Phosphoria formation measured and sampled in natural exposure along ridge on east side of Jefferson River in sec. 25, T. 1 N., R. 2 W., Gallatin County, Montana. Beds strike N. 800 W. and dip 440 N. Section measured by J. A. Peterson and sampled by R. F. Gosman in July 1951. Samples analyzed for P205 and acid insoluble by U. S. Bureau of Mines, Albany, Oregon. BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE Ellis formation--basal bed only Je-1 Mudstone, calcareous N.S. Phosphoria formation P-41 Quartzite N.S. P-40 Sandstone, calcareous, conglomeratic N.S. P-39 Chert N.S. MO=11, glim P-38 Quartzite, calcareous N.S. MO.= P-37 Chert and sandstone N.S. P-36 Quartzite, calcareous N.S. P-35 Chert N.S. P-34 Quartzite, calcareous N.S. P-33 Sandstone, calcareous; fos. col. no. 12697 N.S. Sandstone, calcareous N.S.

P-31 Chert N.S. P-30 Dolomite, argillaceous N.S. NM di P-29 Dolomite, argillaceous, and chert N.S. P-28 Chert N.S. P-27 Phosphate rock, argillaceous 5483-JAP P-26 Chert and mudstone N.S.

P-25 Mudstone, phosphatic 5482-JAP P-24 Mudstone and chert N.S. Mudstone 5481-JAP P-22 Phosphate rock, argillaceous 5480-JAP P-21 Limestone 5479-JAP P-20 Phosphate rock, argillaceous, and mudstone 5478-JAP P-19 Phosphate rock, argillaceous 5477-JAP P-18 Mudstone, phosphatic 5476-JAP P-17 Phosphate rock, argillaceous 5475-JAP P-16 Mudstone, phosphatic, calcareous 5474-JAP 0,5 P-15 Mudstone 5473-JAP P-14 Mudstone 5472-JAP

BED NO. ROCK DESCRIPTION SAMPLE NO. THICKNESS (FEET) P205 ACID INSOLUBLE P-13 P-12 P-11 P-10 P- 9 Phosphate rock, argillaceous Mudstone Mudstone, phosphatic Limestone Chert 5471-JAP 5470-JAP 5469-JAP N.S. N.S. P- 8 P- 7 P- 6 P- 5 P- 4 Quartzite, calcareous Chert and dolomite Dolomite, sandy Chert and calcareous quartzite Dolomite, argillaceous N.S. N.S. N.S. N.S. N.S. - P- 3 P- 2 P-1 Dolomite, conglomeratic Dolomite and chert Sandstone, calcareous N.S. N.S. N.S. Wei MO Total thickness of Phosphoria formation Quadrant formation--top bed only Q-3 Sandstone, calcareous, cherty N.S.

SOUTH BOULDER CREEK, MONTANA, LOT NUMBER 1365 Phosphoria formation measured and sampled in hand trench and natural exposure about 200 feet above and west of Jack Creek in NVii sec. 10, T. 1 S., R. 3 Madison County, Montana. Beds strike E-W and dip 350 N. Section measured by J. A. Peterson and sampled by R. F. Gosman in August 1951. Samples analyzed for P205 and acid insoluble by U. S. Bureau of Mines Laboratory, Albany, Oregon. BED SAMPLE TIUCKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P 0 INSOLUBLE Ellis formation--basal bed only Je-1 Sandstone, calcareous N.S. Phosphoria formation P-25 Covered (sandstone float in pit) N.S. P-24 Chert N.S„ P-23 Quartzite, calcareous, phosphatic N.S. P-22 Chert N.S. P-21 Mudstone, phosphatic 5569-JAP P-20 Mudstone, dolomitic N.S. P-19 Chert, phosphatic 5568-JAI P-18 Chert N.S. Mudstone, phosphatic 5567-JAP P-16 Dolomite N.S. P-15 Phosphate rock, argillaceous 5566-JAP P-14 Chert N.S. 7,2 P-13 Mudstone, calcareous 5510-JAP P-12 Mudstone 5539-JAP P-l1 Phosphate rock, cherty 5538-JAP 25,8 P-10 Mudsi- nne, calcareous 5537-JAP Notes Below bed P-10 occurs a much-weathered porphyry sill 3.6 feet thick. P- 9 Mudstone 536-JAP P- 8 Phosphate rock, argillaceous 5535-JAP 0,7 P- 7 Chert N.S. P- 6 Phosphate rock 5534-JAP P- 5 Quartzite N.S. P- 4 Chert and quartzite N.S. P- 3 Conglomerate N.S, OM .. WO OM P- 2 Quartzite, calcareous N.S„ P- 1 Conglomerate, calcareous N.S. Total thickness of Phosphoria formation

BED NO. ROCK DESCRIPTION SAMPLE THICKNESS NO. (FEET) P205 ACID INSOLUBLE Quadrant formation--top bed only Q-5 Dolomite and calcareous sandstone N.S.

LA MARCHE GULCH, MONTANA, LOT NUMBER 1366 Phosphoria formation measured and sampled in hand trench and natural exposure near La Marche Gulch on west side of Big Hole River in sec. 32, T o 1 S., R. 9 W., Beaverhead County, Montana. Beds strike N. 400 W. and dip 450 SW. Section measured by Ro F. Gosman and sampled by J. A. Peterson in August 1951. Samples analyzed for P205 and acid insoluble by U. S. Bureau of Mines Laboratory, Albany, Oregon. BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE Member E of Phosphoria formation--basal bed only E- 1 Quartzite N.S, Member D of Phosphoria formation D-16 Phosphate rock 5585-RFG D-15 Mudstone 5584-RFG D-14 Limestone 5583-RFG 1.0 ' D-13 Phosphate rock, calcareous 5582-RFG D-12 Phosphate rock 5581-RFG D.11 Mudstone, calcareous 5580-RFG D-10 Phosphate rock, calcareous, and dolomite 5579-R1G D- 9 Phosphate rock and mudstone 5578-RFG D- 8 Phosphate rock and mudstone 5577-RFG D- 7 Phosphate rock, argillaceous 5576-RFG D- 6 Phosphate rock and mudstone 5575-RYG D- 5 Mudstone, phosphatic 5574-RFG D- 4 Limestone, argillaJeous 5573-RFG D. 3 Mudstone and phosphate rock 5572-RFG D- 2 Mudstone and phosphate rock 5571-RFG D- 1 Mudstone and phosphate rock 5570-RFG Total thickness of D member Lower part of Phosphoria formation P-19 Limestone; fos. col. no. 12696 N.S. - P-18 Sandstone, calcareous N.S. =MOO SOD In P-17 Dolomite NoS, P-16 Mudstone, sandy N.S. 111 P-15 Limestone N.S. $1=1.11.m P-14 Dolomite and mudstone N.S. P-13 Limestone and mudstone N.S. P-12 Limestone N.S. P.41 Limestone, sandy, and chert N.S. P-10 Quartzite, calcareous NoSo

BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) INSOLUBLE P205 P- 9 P- 8 P- 7 P- 6 P- 5 Chert and sandstone Limestone, sandy, cherty Quartzite, calcareous Dolomite, cherty Dolomite, cherty N,S, N.S. N.S. N.S. NoS o

ONO OEM OM P- 4 P- 3 P- 2 P-1 Sandstone, cherty Dolomite, sandy Sandstone Dolomite N.S. N.S. N.S. N.S. MOMMI .1.1111 UMMW OMMW Total thickness of lower part of Phosphoria formation 132.7 Quadrant formation--top bed only Q-4 Quartzite, calcareous N.S. IV. OM UM

CANON CREEK NO0 3, MONTANA, LOT NUMBER 1359 Phosphoria formation measured and sampled in hand trench and natural exposure about 1,500 feet northeast of Canyon Creek road on northeast limb of broad syncline in NWi sec. 13, T. 2 S., R. 10 tiV.9 Beaverhead County, Montana. Beds strike N. 25° W, and dip 38° SW. Section measured by J. A. Peterson and sampled by R. F. Gosman in July 1951. Samples analyzed for P205 and acid insoluble by U. S. Bureau of Mines Laboratory, Albany, Oregon. BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO0 (FEET) P205 INSOLUBLE Member E of formation--basal bed only E- 1 Chert, sandy N.S. Member D of Phosphoria formation D-13 Phosphate rock 5424-JAP D-12 Limestone 5423-JAP D-11 Mudstone 5422-JAP D-10 Phosphate rock, calcareous 5421-JAP D- 9 Mudstone, calcareous 5420-JAP D- 8 Phosphate rock, calcareous 5419-JAP D- 7 Mudstone, phosphatic 5418-JAP D- 6 Mudstone, phosphatic 5417-JAP D- 5 Phosphate rock, argillaceous 5416-JAP D- 4 Mudstone, calcareous 5415-JAP D- 3 Mudstone, phosphatic 5414-JAP D- 2 Mudstone, phosphatic, calcareous 5413-JAP D- 1 Sandstone, phosphatic 5412-JAP Total thickness of D member Member C of Phosphoria formation--top and basal beds only Ltmestone., fos. col. no. 12694 N08e Dolomite, sandy N.S.

Member B of Phosphoria formation B- 1 Covered NoS. Notes Covered interval forms gentle slope between resistant limestone units. Member A of Phosphoria formation--top bed only MEE A-10 Dolomite and chert N OS.

NORTH BIG HOLE CANYON, MONTATA, LOT NUMBER 1358 Members A, B, D, and E of Phosphoria formation measured and sampled in three hand trenches and natural exposure on north side of Big Hole River in NEi sec. 3, T. 5 S., R. 8 W., Madison County, Montana, on northwest limb of asymmetrical anticline. Beds strike N. 700 E. and dip 200 N. Section measured by J. A. Peterson and sampled by Peterson and R. F. Gosman in June and July Samples analyzed for P205 and acid insoluble by U. S. Bureau of Mines Laboratory, Albany, Oregon. BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE Member E of Phosphoria formation--basal bed only 11.1.. E- 1 Quartzite 1T.S. Member D of Phosphoria formation D-38 Chert 5461-JAP D-37 Mudstone 5460-JAP D-36 Mudstone 5459-JAP D-35 Mudstone, phosphatic 5458-JAP D-34 Phosphate rock, calcareous 5457-JAP D-33 Mudstone, calcareous 5456-JAP D-32 Mudstone 5455-JAP D-31 Phosphate rock 5454-JAP D-30 Phosphate rock, argillaceous 5453-JAP D-29 Mudstone, phosphatic 5452-JAP D-28 Phosphate rock 5451-JAP D-27 Mudstone 5450-JAP D-26 Phosphate rock 5449-JAP D-25 Limestone, phosphatic 5448-JAP D-24 Phosphate rock, argillaceous 5447-JAP D-23 Phosphate ro ck, argillaceous 5446-JAP D-22 Phosphate rock, argillaceous 5445-JAP D-21 Phosphate rock, argillaceous 5444-JAP D- 20 Mudstone 5443-JAP D-19 Phosphate rock, argillaceous 5442-JAP D-18 Phosphate rock, argillaceous 5441-JAP D-17 Mudstone, phosphatic 5440-JAP D-16 Limestone 5439-JAP D-15 Limestone 5438-JAP D-14 Limestone 5437-JAP D-13 Phosphate rock, argillaceous 5436-JAP D-12 Limestone 5435-JAP 5,1 D-11 Mudstone, phosphatic, calcareous 5434-JAP D-10 Limestone 5433-JAP D- 9 Mudstone, phosphatic, calcareous 5432-JAP

BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE D- 8 Mudstone, phosphatic, calcareous 5431-JAP 38,4 D- 7 Limestone 5430-JAP 0,7 D- 6 Phosphate rock, argillaceous, calcareous 5429-JAP D- 5 Limestone 5428-Ja D- 4 Phosphate rock, argillaceous 5427-JAP D- 3 Mudstone, phosphatic, calcareous 5426-JAP 1,5 D- 2 Phosphate rock, argillaceous 5425-JAP D- 1 Mudstone, sandy N oS. Total thickness of D member Member C of Phosphoria formation--not described Member B of Phosphoria formation B- 7 Mudstone 5411-JAP B- 6 Mudstone 5410-JAP B- 5 Phosphate rock 5409-JAP B- 4 Mudstone, sandy, calcareous 5408-JAP 68,3 B- 3 Sandstone, calcareous 5407-JAP 0,3 B- 2 Limestone, sandy, and sandy mudstone N.S. B- 1 Limestone, sandy, and sandy mudstone NOS. Total thickness of B member Member A of Phosphoria formation--top bed only Noted Approximately 50 feet of upper A member not measured. Complete A member measured at South Big Hole Canyon No. 1. A- 9 Limestone, argillaceous 5390-JAP

SOUTH BIG HOLE CANYON NO, 1, MONTANA, LOT NUMBER 1354 Members A, C, and D of Phosphoria formation measured and sampled in natural exposure and hand trench near top of ridge on south side of Big Hole River in SEj sec. 3, T. 5 S., R. 8 W., Beaverhead County, Montana, on north west limb of faulted anticline. Beds strike N. 600 B. and dip 200 NW. Section measured by J. A. Peterson and sampled by R. F. Gosman in. June 1951. Samples analyzed for P205 and acid insoluble by U. S. Bureau of Mines Laboratory, Albany, Oregon, BED SAMPLE THICKNESS ACID NO, ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE Member D of Phosphoria formation--basal beds only D-8 Mudstone, phosphatic 5468-JAP D-7 Phosphate rock, argillaceous 5467-JAP D-6 Phosphate rock, calcareous, argillaceous 5466-JAP D-5 Limestone 5465-JAP D-4 Phosphate rook, argillaceous 5464-JAP 1,3 D-3 Limestone, argillaoeous 5463-JAP 40,2 D-2 Phosphate rock, argillaceous 5462-JAP D-1 Mudstone N.S. Total thickness of measured section MeEl3E* SLSLI12!ELEIIIEH±ILEL=Li ITlLaaLL!112nLE Limestone N,S0 Chert N.S. Notes Member B apparently lenses out at this lo3ality. Mudstones of member B at North Big Hole Canyon may be represented by upper part of anit A-5 here. Member A of Phosphoria formation--top bed otly ONO IMO IN11 A-5 Chert and limestone N.S.

SOUTH BIG HOLE CANYON NO. 2, MONTANA, LOT NUMBER 1354 Member B of Phosphoria formation measured and sam?led in hand trench along ridge about 1 mile south of Big Hole River in SET sec. 9, T. 5 S., R. 8 W., Beaverhead County, Montana. Section measured by J. A. Peterson and sampled by R. F. Gosman in June 1951. Samples analyzed for P205 and acid insoluble by U. S. Bureau of Mines Laboratory, Albany, Oregon. BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE Member C of Phosphoria formation--basal bed only Chert N.S. Member B of Phosphoria formation B-8 B-7 Mudstone Mudstone 5399JAP 5398-JAP Notes 5406-JAP is sample of thin bed of phosphate rock contained in bed B-7 near the middle. Phosphate rock 5406-JAP B-6 Phosphate rock 5397.-JAP B-5 Phosphate rock 5396-JAP B-4 Phosphate rock 5395-JAP B-3 Phosphate rock, sandy 5394-JAP B-2 Mudstone, calcareous, sandy 5393-JAP B-1 Mudstone, sandy, calcareous 5392-JAP Total thickness of B member Member A of Phosphoria formation--top bed only A-1 Limestone and chert N.S. (0.2) 20.5 ' 39.2

INDIAN CREEK, MONTANA, LOT NUMBER 1362 Phosphoria formation measured and sampled at natural exposure on north side of Indian Creek in sec. 20, T. 8 S,, R. 2 E., Madison County, Montana. Section measured by R. F. Gosman and sampled by J. A. Peterson in August 1951. Samples analyzed for P205 and acid insoluble by U. S. Bureau of Mines Laboratory, Albany, Oregon. BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) INSOLUBLE P205 Dinwoody fonnation--basal bed only TrD-1 Sandstone, calcareous N.S. Phosphoria formation P- 16 Quartzite N.S. P- 15 Chert N.S. P- 14 Phosphate rock and mudstone 5497-RFG P- 13 Limestone 5496-RFG P- 12 Phosphate rock, calcareous, and phosphatic mudstone 5495-RFG P- 11 Phosphate rock 5494-RFG P- 10 Mudstone, calcareous 5493-RFG P9 Dolomite 5492-RFG P8 Mudstone and phosphate rock 5491-RFG P7 Mudstone, phosphatic 5490-RFG 0,6 P6 Quartzite, calcareous N,S, P5 Mudstone, calcareous, and

=IOU. quartzite N.S. P4 Quartzite N.S. P3 Mudstone, sandy N.S. P- 2 Sandstone, dolomitic, and sandy OW ONO dolomite N.S, OM. P-' 1 Sandstone, calcareous N.S. Total thickness of Phosphoria formation Quadrant formation--top bed only IMO. MOO IMO Q- 2 Sandstone, dolomitic N.S.

CINNABAR MOUNTAIN, MONTANA, LOT NUMEER 1363 Phosphoria formation measured and sampled in natural exposure on east side of Cinnabar Mountain, sec. 31, T. 8 S., R. 8 E., Park County, Montana. Beds strike N. 500 W. and dip 75° SW. Section measured by J. A. Peterson and sampled by R. F. Gosman in August 1951. Samples analyzed for P205 and acid insoluble by U. S. Bureau of Mines Laboratory, Albany, Oregon, BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE Dinwoody formation--basal bed only TrD-1 Limestone fos. col. no. 12695 N.S. Phosphoria formation P- 17 Quartzite, calcareous N.S.

P- 16 Chert and dolomite N.S. P- 15 Quartzite N.S. P- 14 Dolomite N.S. P- 13 Quartzite, cherty, calcareous N.S. P- 12 Quartzite, cherty N.S. P- 11 Chert and calcareous mudstone 5530-JAP P. 10 Chert, argillaceous 5529-JAP P9 Mudstone, calcareous; contains gypsum 5528-JAP P8 Phosphate rock, argillaceous 5527-JAP P7 Limestone 5526-JAP P6 Phosphate rock, argillaceous, calcareous 5519-JAP P5 Phosphate rock, argillaceous, calcareous 5518-JAP P4 Phosphate rock, calcareous 5517-JAP P3 Mudstone, calcareous, phosphatic 5516-JAP P2 Phosphate rock, argillaceous, calcareous 5499-JAP P1 Conglomerate, phosphatic 5498-JAP Total thickness of Phosphoria formation Quadrant formation--top bed only Q Sandstone, calcareous, argillaceous N.S.

LANDON RIDGE, MONTANA, LOT NUMBER 1361 Part of member B of Phosphoria formation measured and sampled in bulldozer trench in sec. 27, T. 12 S., R. 2 W., Beaverhead County, Montana. Beds strike E-W and dip 250 W. Section measured by J. A. Peterson and sampled by Peterson and R. F. Gosman in August 1951. Samples analyzed for P205 and acid insoluble by U. S. Bureau of Mines Laboratory, Albany, Oregon. BED SM'PLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) INSOLUBLE P205 Member C of Phosphoria formation--basal bed only Quartzite, phosphatic N.S. Member B of Phosphoria formation B-6 Phosphate rock, sandy 5489-JAP B-5 Phosphate rock, cherty 5488-JAP B-4 Phosphate rock 5487-JAP B-3 Phosphate rock, sandy 5486-JAP B-2 Phosphate rock, argillaceous, calcareous 5485-JAP B-1 Phosphate rock, cherty 5484-JAP Total thickness of B member Member A of Phosphoria formation--top bed only A-1 Chert, calcareous N.S.

BEAR CREEK, IDAHO, LOT NUMBER 1353 Phosphatic shale and ilper shale member of the Phosphoria formation sampled n ar Bear Creek, NET sec. 31, T. 1 S., R. 45 E., Bonneville County, Idaho, on the west limb of an anticline trending N. 35° W. and plunging southeast. Beds strike N. 700 W. and dip from 45° to 75° S. Section measured by R. P. Sheldon, T. M. Cheney, R. G. Waring, and V. A. Warner in August 1951. Samples analyzed for P205 and acid insoluble by U. S. Bureau of Mines Laboratory, Albany, Oregon. BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE Dinwoody formation--lower bed only Din-1 Siltstone N.S. Upper shale member of Phosphoria formation U- 3 Mudstone N.S.

U- 2 Mudstone N.S. U- 1 Phosphate rock, argillaceous 6571-MAW Rex chert member of Phosphoria formation R4 Chert; fos. col, no. 12536 N.S. R3 Covered; rocks probably faulted N.S. ? WO MO R- 2 Mudstone, cherty N.S. R1 Mudstone, cherty N.S. mi0 ONO NM Phosphatic shale member of Phosphoria formation P- 61 Phosphate rock 6567-MAW P- 60 Phosphate rock 6566-MAW P- 59 Phosphate rock 6565-MAW P- 58 Phosphate rock 6564-MAW P- 57 Phosphate rock; fos. col. no. 6563-MAW P- 56 Phosphate rock; fos, col. no. 6562-MAW P- 55 Phosphate rock; fos. col. no. 6561-MAW P- 54 Phosphate rock and mudstone; fog. col. no. 12534 6560-11AW P- 53 Phosphate rock; fos, col. no. 6559-MAW P- 52 Phosphate rock 6558-MAW P- 51 Mudstone and phosphate rock 6557-MAW P- 50 Mudstone 6556-MAW P- 49 Phosphate rock and mudstone 6555-MAW P- 48 Mudstone 6554-MAW P- 47 Phosphate rock, argillaceous 6553-MAW

BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P 0 2 5 INSOLUBLE P- 46 Mudstone, calcareous, phosphatic 655241AW P- 45 Mudstone 6551-MAW P- 44 Mudstone 6550.46.KOT P- 43 Siltstone 6549-RGW P- 42 Siltstone 6548-RGW P- 41 Siltstone 6547-RGW P- 40 Mudstone, calcareous 6546-TMC P- 39 Mudstone, calcareous 6545-TMC P- 38 Mudstone 6544-TMC P- 37 Mudstone 6543-TMC P- 36 Mudstone, phosphatic 6542-TMC P. 35 Mudstone 6541-TMC P.- 34 Mudstone, phosphatic, calcareous 6540-TMC P- 33 Mudstone, phosphatic 6539-TMC P- 32 Phosphate rock, argillaceous, and mudstone 6538-TMC P- 31 Mudstone, calcareous, phosphatic 6537-TMC P- 30 Mudstone and calcareous, argillaceous phosphate rock 6536-TIM P- 29 Phosphate rock, calcareous 6535-TMC P- 28 Phosphate rock and calcareous mudstone 6534-TMC P- 27 Mudstone 6533-TIM P- 26 Mudstone 6532-TMC P- 25 Mudstone, calcareous 6531-TMC P- 24 Mudstone 6530-TMC P- 23 Mudstone and phosphatic, calcareous mudstone 6529-TMC P- 22 Mudstone and calcareous, phosphatic mudstone 6528-TMC P- 21 Mudstone, calcareous 6527-TMC P- 20 Phosphate rock, argillaceous, calcareous 6526-TMC P- 19 Phosphate rock, argillaceous, calcareous 6525-TMC P- 18 Mudstone, phosphatic, and calcareous mudstone 6524-RPS P- 17 Phosphate rock, calcareous 6523-RPS P- 16 Phosphate rock, argillaceous 6522-RPS P- 15 Phosphate rock, argillaceous, calcareous 6521-RPS P- 14 Phosphate rock, argillaceous 6520-RPS P- 13 Phosphate rock 6519-RPS P- 12 Phosphate rock, calcareous, argillaceous 65I8-RPS

BED SALTLE ThICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE P- 11 Phosphate rock 6517-RPS P- 10 Mudstone, calcareous 6516-RPS P9 Phosphate rock, calcareous 6515-RPS P8 Phosphate rock 6514-RPS P7 Phosphate rock, calcareous 6513-RPS PP- Phosphate rock Siltstone 6512-RPS 6511-RPS P- '4 Phosphate rock 6510-BPS P3 Mudstone 6509-RPS P2 Phosphate rock 6508-RPS P- 1 Limestone, argillaceous, and mudstone 6570-BPS Total thickness of phosphatic shale member Wells formation--top bed only W- 24 Dolomite, sandy; fos. col. no. N.S.

FORT HALL INDIAN RESERVATION, IDAHO, LOT NUMBER 1349 Upper portion of phosphatic shale member of Phosphoria formation sampled in trench of Westvaco Company about 1 mile east of J. R. Simplot Company mine and Fort Hall Indian Reservation, sec. 23 (?), T. 4 S., R. 37 E., Bingham County, Idaho. Beds strike N. 500 W. and dip 25° S. Section measured and sampled by M. A. Warner and R. A. Smart in July 1951. Samples analyzed for P205 and acid insoluble by Trace Elements Section Laboratory, Denver, Colorado. BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE Rex member of Phosphoria formation--lower bed only R- 1 Mudstone, cherty N.S. Phosphatic shale member of Phoalloria formation 4M1 COW SODOM P-67 Mudstone N.S. P-66 Mudstone and mantle N.S. P-65 Phosphate rock, argillaceous 6337-RAS P-64 Mudstone 6336-RAS Note: Beds P-64 to P-67 badly weathered and slumped. P-63 Mudstone 6335-RAS P-62 Phosphate rock 6334-RAS P-61 Mudstone 6333-RAS P-60 Mudstone 6332-RAS P-59 Phosphate rock, argillaceous, calcareous 6331-MAW Note: Beds P-59 to P-61 badly weathered. P-58 Phosphate rock 6330-MAW P-57 Mudstone, phosphatic 6329-MAW P-56 Phosphate rock, argillaceous 6328-MAW P-55 Phosphate rock, argillaceous 6327-MAW P-54 Mudstone, phosphatic 6326-MAW P-53 Mudstone, phosphatic 5325-MAW P-52 Mudstone, phosphatic 6324-MAW P-51 Phosphate rock 6323-MAW P-50 Mudstone 6322-MAW P-49 Phosphate rock 6321-MAW Note: 6321-MAW correlates with 2720-WOM of lot no. 1269. Total thickness of measured section

SNOWDRIFT MOUNTAIN, IDAHO, LOT NUMBER 1372 Phosphatic shale member of the Phosphoria formation measured and sampled on Snowdrift Mountain, NWi NWL sec. 8, T. 10 S., R. 45 E., Caribou County, Idaho, on the east limb of the Georgetown syncline. Beds strike N. 200 E. and dip 650 W. Section measured and sampled by T. M. Cheney, J. A. Peterson, R. G. Waring, R. A. Smart, and E. R. Cressman in September 1951. Samples analyzed for P205 and acid insoluble by U. S. Bureau of Mines Laboratory, Albany, Oregon. BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE Rex member of Phosphoria formation-basal bed only R- 1 Chert and mudstone 6775-JAP Phosphatic shale member of Phosphoria formation P-156 Phosphate rock, argillaceous 6774-JAP P-155 Mudstone 6773-JAP P-154 Mudstone 6772-JAP P-153 Mudstone; fos. col. no. 12595 6771-JAP P-152 Mudstone; fos. col. no. 12595 6770-JAP P-151 Mudstone 6769-JAP P-150 Mudstone, calcareous 6768-JAP Notes Bed P-150 is highly weathered. P-149 Mudstone; fos, col. no. 12594 6767-JAP P-148 Mudstone 6766-JAP P-147 Mudstone, calcareous, phosphatic 6765-JAP P-146 Phosphate rock 6764-JAP P-145 Mudstone; fos, col. no. 12593 6763-JAP P-144 Mudstone 6762-JAP P-143 Phosphate rock 6761-JAP P-142 Phosphate rock 6760-JAP P-141 Phosphate rook 6759-JAP P-140 Mudstone 6758-JAP P-139 Phosphate rock and mudstone 6757-ERC P-138 Phosphate rock, argillaceous 6756-ERC P-137 Phosphate rock 6755-ERC P.436 Phosphate rock 6754-ERC P-135 Phosphate rock 6753-ERC P-134 Phosphate rock, argillaceous 6752-RGW P-133 Phosphate rock, argillaceous, and phosphatic mudstone 6751-RGW P-132 Phosphate rock 6750-RGW P-131 Phosphate rock 6749-RGW 14.900,u ,

BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P 205 INSOLUBLE P-130 Phosphate rock 6748-RGW P-129 P-128 P-127 P-126 Phosphate rock Phosphate rock Phosphate rock Phosphate rock 6747-RGW 6746-RGW 6745=RGW 6744-RGW P-125 P-124 Phosphate rock Phosphate rock 6743-RGW 6742-RGW P-123 P-122 P-121 Phosphate rock Phosphate rock Phosphate rock, argillaceous 6741-RGW 6740-RGW 6739-RGW P-120 P-119 Mudstone, phosphatic Mudstone 6738-RGW 6737-RGW P-118 Mudstone, phosphatic 6736-RGW P-117 Phosphate rock, argillaceous, calcareous 6735-RGW P-116 Phosphate rock, argillaceous 6734-RGW P-115 P-114 P-113 P-112 P-111 Mudstone, phosphatic Phosphate rock, argillaceous Mudstone, phosphatic Phosphate rock Mudstone 6733-RGW 6732-RGW 6731-RGW 6730-RGW 6729-RGW P-110 P-109 P-108 Mudstone, phosphatic Phosphate rock, argillaceous Mudstone, phosphaticg fos. col. no. 12592 6728-RGW 6727-RGW 6726-RGW P-107 P-106 Mudstone, phosphatic Mudstone 6725-RGW 6724-RGW P-105 P-104 Phosphate rock, argillaceous, and mudstone Phosphate rock, argillaceous 6723-RGW 6722-RGW 48,7 P-103 Mudstone, phosphatic, and mudstone 6721-RGW P-102 Mudstone 6720-RGW P-101 Mudstone 6719-RAS P-100 Mudstone 6718-RAS P- 99 Mudstone 6717-RAS P- 98 Mudstone 6716-RAS P- 97 Phosphate rock, argillaceous, calcareous 6715-RAS P- 96 Mudstone, phosphatic; fos. col. no. 12591 6714-RAS P" 95 P- 94 P- 93 Mudstone, phosphatic, calcareous Phosphate rock, argillaceous Phosphate rock 6713-RAS 6712-RAS 6711-RAS

BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P 205 INSOLUBLE P- 92 Phosphate rock, argillaceous, and phosphate rock 6720-RAS P- 91 Mudstone, phosphatic 6709-RAZ P- 90 Mudstone, phosphatic 6708-RAS P- 89 P- 88 Phosphate rock, argillaceous Mudstone 6707-RAS 6706-RAS P- 87 Limestone 6705-RAS P- 86 Mudstone, cherty, phosphatic 6704-RAS P- 85 Mudstone 6703-RAB P- 84 P- 83 Phosphate rock, argillaceous, cherty, fos. col. no. 12590 Mudstone, phosphatic 6702-RAS 6701-RAS P- 82 P- 81 Phosphate rock, argillaceous Mudstone 6700-RAS 6699-RAS P- 80 Mudstone and phosphatic mudstone 6698-TMC P- 79 Phosphate rock, argillaceous, calcareous 6697-TMC P- 78 Mudstone and argillaceous, calcareous phosphate rock 6696-TMC P- 77 Mudstone 6695-TMC P- 76 P- 75 P- 74 P- 73 Phosphate rock Mudstone, phosphatic, calcareous Phosphate rock, argillaceous Mudstone, phosphatic 6694-TMC 6693-TMC 6692-TMC 6691-TMC P- 72 Phosphate rock, argillaceous; phosphatic mudstone, and mudstone 6690-TMC P- 71 Phosphate rock, argillaceous, and mudstone 6689-TMC P- 70 Mudstone, calcareous, phosphatic 6688..TMC P- 69 P- 68 Mudstone, phosphatic; mudstone, and argillaceous phosphate rock Mudstone, phosphatic 6687-TMC 6686-TMC P- 67 P- 66 Mudstone, phosphatic Mudstone 6685-TMC 6684-TIM P- 65 Mudstone 6683-TMC P- 64 P- 63 Mudstone, cherty Mudstone 6682-TMC 6681-TMC P- 62 Mudstone 6680-TMC P- 61 Mudstone 6679-TMC P- 60 Mudstone 6678-TMC P- 59 P- 58 Mudstone, phosphatic Phosphate rock, argillaceous 6677-TMC 6676-TMC P- 57 Mudstone, phosphatic 6675-TMC

BED NO. P- 56 55 P® 54 P© 53 P® 52 P- 51 P." 50 P- 49 P- 48 P- 47 P'' 46 P- 45 P- 44 P- 43 P.- 42 P- 41 P- 40 P- 39 P.- 38 P- 37 P- 36 P- 35 P- 34 P. 33 P- 32 P.- 31 P.- 30 P- 29 P.- 28 P.- 27 P- 26 P.- 25 P- 24 P.' 23 P- 22 P- 21 P.- 20 P- 19 ROCK DESCRIPTION Phosphate rock, argillaceous Phosphate rock, argillaceous Phosphate rock, argillaceous, calcareous Phosphate rock, argillaceous, and calcareous mudstone Phosphate rock, argillaceous, and phosphatic mudstone Mudstone Mudstone, phosphatic Mudstone, phosphatic Mudstone, phosphatic, and mudstone Phosphate rock, argillaceous Phosphate rock, argillaceous Mudstone, phosphatic Mudstone, phosphatic Phosphate rock, argillaceous Phosphate rock, argillaceous Phosphate rock, calcareous Phosphate rock Phosphate rock Phosphate rock, argillaceous Phosphate rock Phosphate rock Mudstone, calcareous Phosphate rock Phosphate rock Phosphate rock, argillaceous, and mudstone Phosphate rock Mudstone, phosphatic Mudstone, phosphatic Mudstone Phosphate rock, argillaceous Phosphate rock Phosphate rock Phosphate rock, argillaceous Mudstone, phosphatic Phosphate rock; fos. col. no. Phosphate rock Phosphate rock Phosphate rock SAMPLE THICKNESS ACID NO. (FEET) INSOLUBLE P205 6674-TMC 6673-TMC 6672.-TMC 6671.-TMC 33,4 6670.-TMC 6669=TMC 6668.-TMC 6667-TMC 6666-TMC 6665.-TMC 6664-TMC 6663.-TMC 46,6 6662-TMC 6661- MC 6660.-TMC 6659-TMC 6658-TMC 6657-'TMC 6656-TMC 6655.-TMC 6654-TMC 6653.-TMC 6652-TMC 6651-TMC 6650-TMC 6649-TMC 6648-JAP 6647-JAP 11,2 6646-JAP 6645-JAP 6644-JAP 6643.-JAP 6642JAP 6641-JAP 6640-JAP 27,3 6639-JAP 6638-JAP 6637-JAP 28,1

BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE P- 18 Phosphate rock, argillaceous 6636-JAP P- 17 Phosphate rock 6635-JAP P- 16 Mudstone, phosphatic 6634='JAP P- 15 Phosphate rock, argillaceous; foso col. no. 12587 6633-JAP P- 14 Phosphate rock, argillaceous, and phosphatic mudstone 6632-JAP P- 13 Phosphate rock 6631-JAP P- 12 Phosphate rock 6630-JAP P- 11 Phosphate rock 6629-JAP P- 10 Phosphate rock 6628-JAP P9 Phosphate rock 6627-JAP P8 Limestone, argillaceous 6626-JAP P7 Limestone, argillaceous 6625€JAP P6 Limestone, argillaceous 6624-JAP P5 Phosphate rock 6623-JAP P4 Limestone 6622-JAP P3 Phosphate rock, calcareous; fos. col. no. 1'2585 6621-JAP P2 Dolomite, argillaceous; fos. col. no. 12584 6620-JAP P1 Phosphate rock; foso col. no. 6619-JAP Total thickness of phosphatic shale member Wells formation--top bed only. W1 Dolomite, siliceous N.S. M.1 Ma

MUD SPRING, IDAHO, LOT NUMBER 1351 Phosphatic shale member of the Phosphoria formation measured and sampled near Mud Spring, sec. 7, T. 12 S., R. 29 E., Cassia County, Idaho. Beds strike N. 750 W. and dip 30° S. Section measured and sampled by T. M. Cheney, R. A. Smart, R. G. Waring, and M. A. Warner in July 1951. Samples analyzed for P205 and acid insoluble by Trace Elements Section Laboratory, Denver, Colorado. BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P 205 INSOLUBLE Rex member of Phosphoria formation--basal bed only COI ONO R- 1 Mudstone N,S, Phosphatic shale member of Phosphoria formation P-47 Siltstone, phosphatic, calcareous 6454-RGW P-46 Mudstone, calcareous 6453-RGW P-45 Siltstone 6452-RGW P-44 Mudstone 6451-RGW P-43 Mudstone 645C-RGW P-42 Siltstone and argillaceous phosphate rock 6449-RGW P-41 Mudstone, phosphatic 6448-RGW Notes Beds P-41 to P-46 are highly crumpled, slumped, and weathered. Thicknesses are only approximate. P-40 Siltstone 6447-RGW P-39 Siltstone, phosphatic 6446-RGW P-38 Mudstone and phosphatic siltstone 6445-RGW P-37 Siltstone, phosphatic; fos. col. no. 12641 6444-RGW P-36 Mudstone, chesty, phosphatic, and siltstone 6443-RGW P-35 Mudstone 6442-TMC P-34 Mudstone and chert; fos. col. no. 6441-TMC P-33 Mudstone 6440-TMC P-32 Phosphate rock, argillaceous; fos. col. no. 12640 6439-TMC P-31 Phosphate rock 6438-TMC P-30 Phosphate rock, argillaceous 6437-TMC P-29 Mudstone, phosphatic, and argillaceous phosphate rock 6436-TMC P-28 Mudstone, phosphatic 6435-TMC P-27 PhosTthate rock, argillaceous 6434-RAS P-26 Mudstone, phosphatic 6433-RAS

BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE P-25 Mudstone9 phosphatic 6432-RAS P-24 Mudstone9 phosphatic 6431-RAS P-23 Mudstone 6430-RAS P-22 Mudstone 6429-RAS P-21 Mudstone 6428-RAS P-20 Mudstone 6427-RAS P-19 Mudstone 6126-RAS P-18 Mudstone 6425-MAW Notes Beds P-18 and P-19 are highly weathered. P-17 Mudstone, phosphatic 6424-MAW P-16 Mudstone 6423-MAW P-15 Mudstone 6422-MAW P-14 Mudstone 6421-MAW P-13 Phosphate rock 6420-MAW P-12 Phosphate rock9 argillaceous 6419-MAN P-11 Mudstone, phosphatic 6418-RAS P-10 Phosphate rock9 argillaceous 6417-RAS P- 9 Phosphate rock 6416-RAS P- 8 Phosphate rock9 argillaceous, calcareous 6415-RAS P- 7 Phosphate rock 6414-RAS P- 6 Phosphate rock 6413-RAS P- 5 Mudstone9 phosphatic 6412-RAS P- 4 Siltstone; fos. col. no. 12638 6411-RAS P- 3 Phosphate rock9 argillaceous; fos. col. no. 12638 6410-RAS P- 2 Mudstone9 phosphatic 6409-RAS P- 1 Mudstone and phosphate rock; fos. col. no. 12637 6408-RAS Total thickness of phosphatic shale member Wells formation--not measured

RED CREEK, WYOMING, LOT NUMBER 1368 Phosphoria formation measured and sampled at natural exposure by Red Creek about 1/2 mile from its juncture with the Snake River and about 6 miles east of the Snake River Ranger Station, Yellowstone National Park. The area is unsurveyed. Formation outcrops on the north flank of a small anticline. Beds strike N-S and dip 200 E. Section measured and sampled by R. P. Sheldon, R. G. Waring, T. M. Cheney, and R. A. Smart in August 1951. Samples analyzed for P205 and aci.d insoluble by U. S. Bureau of Mines Laboratory, Albany, Oregon. BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE Phosphoria formation Note: A few feet of cover separate the'Phosphoria formation from the Chugwater formation. OWM, P-33 Sandstone,g fos. col. no. 12553 N.S. P-32 Chert, sandy N.S. P-31 Chert N.S. P-30 Chert N.S. P-29 Chert N.S. Ole P-28 Chert N.S. P-27 Chert N.S. P-26 Chert N.S. - P-25 Chert N.S. NMI 0. 11=1 P-24 Chert N.S.

P-23 Chert N.S. 4,3 P-22 Phosphate rock, argillaceous; fos. col. no. 12552 6581-RPS P-21 Sandstone N.S. P-20 Chert, sandy, and phosphatic sandstone N.S. P-19 Sandstone, phosphatic, and cherty sandstone N.S. P-18 Sandstone, cherty N.S. P-17 Sandstone, cherty N.S. Note: The rest of the section below was measured on the opposite (east) side of Red Creek. The correlation between segments is reliable. OM Inn P-16 Chert, sandy, and cherty sandstone N.S. P-15 Sandstone, dolomitic N.S. P-14 Sandstone, cherty; fos. col. no. N.S. P-13 Chert, sandy N.S. P-12 Mudstone, phosphatic, and mudstone 6582-TMC

BED NO. ROCK DESCRIPTION SAMPLE THICKNESS NO. (FEET) P2 5 INSOLUBLE P-11 P-10 P- 9 P- 8 P- 7 Sandstone, calcareous; phosphatic chart, and chert Sandstone Dolomite, sandy; foso col. no. Sandstone, dolomitic Sandstone; foso col. no. 12549 6583-TMC N.S. N.S. N.S. N.S. 0,9 IMM 0.. ,Mb P- 6 P- 5 P- 4 P- 3 Chert and dolomite Sandstone, dolomitic; foso col. no. 12548 Dolomite, sandy; foso col. no. Limestone, dolomitic N.S. N.S. N.S. N.S. 2e6 ~OM 11. P- 2 P- 1 Sandstone, dolomitic Sandstone, conglomeratic; fos. col. no. 12547 N.S. N.S. MO OM NM - Total thickness of Phosphoria formation Tensleep formation--top bed only T- 4 Dolomite, chert, and sandstone; foso col. no. 12546 N.S. MN% UM

FORELLEN PEAK, WYOMING, LOT NUMBER 1369 Phosphoria formation measured and sampled at a natural exposure on the south slope of Forellen Peak in the northern portion of Grand Teton National Park, unsurveyed land. Section crops out on the east flank of an anticline. Beds strike N-S and dip gently east. Section measured and sampled by R. P. Sheldon, R. G. Waring, and R. A. Smart in August 1951. Samples analyzed for P205 and acid insoluble by U. So Bureau of :l.ines Laboratory, Albany, Oregon, BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P 05 INSOLUBLE Phosphoria formation Note: A 3- to 5-foot covered interval separates the Phosphoria formation from the Dinwoody formation. P-30 Sandstone, cherty; fos. col. no. 12560 N.S. P-29 Covered N.S. =MOW P-28 Sandstone N.S. Mien. P-27 Sandstone N.S. P-26 Sandstone, cherty N.S. OM& 11111 P-25 Covered N.S. P-24 Sandstone, dolomitic; fos. col. no. 12559 N.S. P-23 Covered N,S. P-22 Chert, sandy; fos. col. no. N.S. P-21 Covered (probably chert); fos. col. no. 12558 N.S. P-20 Chert, argillaceous; fos0 col. no. 12558 N.S. P-19 Covered N.S.

P-18 Chert, argillaceous N.S. P-17 Chert N.S. P-16 Covered N.S. P-15 Chert, sandy NOS. P-14 Chert, sandy N.S. P-13 Chert N.S. P-12 Phosphate rock, argillaceous; fos0 col. no. 12557 6584-RGW P-11 Sandstone; fos. col. no. 12557 N.S.

P-10 Sandstone, calcareous; fos. col. no. 12557 N.S. P- 9 Sandstone, cherty, and calcareous sandstone N.S. P- 8 Sandstone, calcareous, fos. col. no. 12556 N.S.

BED SAMPLE TEICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) INSOLUBLE P205 P- 7 Sandstone; fos. col. no. 12556 N.S. P- 6 Sandstone N.S. P- 5 Sandstone; foso col. no. 12555 N.S. P- 4 Covered N.S. P- 3 Chert, argillaceous N.S. P- 2 Covered N.S. P- 1 Sandstone, phosphatic; fos. col. no. 12554 N.S. N.M. - Total thickness of Phosphoria formation 183.9+ Note: Total thickness accurate to within about 10 feet.

HUNGRY CREEK, WYOMING, LOT NUMBER 1375 Upper shale and Rex members of Fhosphoria formation measured and sampled in a bulldozer trench and at a natural exposure on Hungry Creek, T. 41 N., R. 118 W., about 9 miles southeast of Victor, Idaho, on the Teton Pass highway, Teton County, Wyoming, on the southwest limb of an anticline. Beds strike N. 20° W. and dip 400 SW. Section measured and sampled by R. P. Sheldon, T. M. Cheney, and J, A. Peterson in October 1951. Samples analyzed for P205 and acid insoluble by U. S. Bureau of Mines Laboratory, Albany, Oregon. BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE Upper shale member of Phosphoria formation--covered above U-18 Sandstone; fos, col. no. 12667 6794-TMC U-17 Covered N.S. 14.0 ? U-16 Mudstone and mantle N.S. 4.0 ? Note: Bed U-16 badly slumped and mixed with mantle. U-15 Mudstone, calcareous 6793-RPS U-14 Limestone, argillaceous, and calcareous mudstone 6792-RPS U-13 Mudstone, calcareous 6791-RPS U-12 Mudstone, calcareous, and mantle 6790-RPS U-il Mudstone and mantle N.S. Notes Beds U-31 and U-12 badly slumped and mixed with mantle. U-10 Mudstone, calcareous 6789-TMC U- 9 Mudstone, calcareous 6788-TMC U- 8 Mudstone, calcareous 6787-JAP U- 7 Phosphate rock, argillaceous, calcareous 6786-JAP U- 6 Mudstone, calcareous 6785-JAP U- 5 Phosphate rock 6784-JAP U- 4 Phosphate rock 6783-JAP U- 3 Mudstone, calcareous 6782-JAP U- 2 Mudstone, calcareous 6781-JAP U- 1 Phosphate rock, argillaceous; fos, col. no. 12666 6780-JAP Total thickness of measured section Rex member of Phosphoria formation--top and basal beds only R-24 Sandstone; fos, col. no. 12665 N.S. R- 1 Dolomite N.S. YAM

BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE Phosphatic shale member of Phosphoria formation Notes The phosphatic shale member is badly crumpled and thinned at this locality. However, about 0 mile to the southeast, L. S. Gardner has described and sampled the phosphatic shale member. This data is published in U.S.G.S. Bulletin 944-A0 Wells formation--top bed only W- 1 Chert N.S.

TETON PASS, WYOMING, LOT NUMBER 1370 Phosphoria formation sampled in road cut on highway 22, 0 mile west of Teton Pass summit, T. 41 N., R. 117 W., Teton County, Wyoming. Beds strike N. 65° W. and dip 60° N. Section measured and sampled by R. G. Waring and R. A. Smart in August 1951. Samples analyzed for P205 and acid insoluble by U. S. Bureau of Mines Laboratory, Albany, Oregon. BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) INSOLUBLE P205 Upper shale member of Phosphoria formation--basal beds only U- 5 Mudstone N.S. U- 4 Phosphate rock; fos. col. no. 6590-RAS U- 3 Mudstone N.S. U- 2 Mudstone N.S. U- 1 Mudstone, phosphatic 6589-RAS Rex member of Phosphoria formation--top and basal beds only R-25 Limestone N.S. R- 1 Sandstone, dolomitic N.S. Phosphatic shale member of Phosphoria formation P-21 Mudstone, cherty; must one and phosphate rock N.S. P-20 Mudstone, cherty, and cherty limestone N.S. P-19 Phosphate rock; contains siltstone concretion 6588-RGW P-18 Sandstone and phosphate rock N.S. P-17 Dolomite N.S. .I6 IMO IMP OM. P-16 MudstonQg fos. col. no. 12576 N.S. P-15 Phosphate rock and chert, N.S. WEI WOO OM OM* Notes A sandstone and chert lens occurs at top of unit P-15. P-14 Chert, sandy, and phosphate rock N.S. P-13 Silt stone N.S. Note: A sandstone lens occurs at top of unit P-13. P-12 Chert N.S. P-11 Mudstone, cherty N.S. P-10 Chert, argillaceous N.S. I=O 4 P- 9 Mudstone N.S. P- 8 Mudstone N.S. P- 7 Mudstone, phosphatic 6587-RAS

BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) INSOLUBLE P205 P- 6 Mudstone; fos. col. no. 12575 N.S. P- 5 Mudstone and cherty must one NoS, P- 4 Phosphate rock, argillaceous 6586-RAS P- 3 Mudstone N.S. P- 2 Phosphate rock, calcareous 6585-RAS P- 1 Mudstone N.S. Total thickness of measured section Notes Unit P-1 is not necessarily the lowest bed of the phosphatic shale member since it is separated from the Wells formation by a fault. Wells formation-:present but not described

STEER CREEK, WYOMING, LOT NUMBER 1352 Phosphoria formation measured and sampled in a bulldozer trench and at a natural exposure on the north fork of Steer Creek, T. 36 N., R. 116 W., Lincoln County, Wyoming, on the west limb of an anticline. Beds strike N. 350 E. and dip 500 SW. Section measured and sampled by T. M. Cheney, R. G. Waring, R. A. Smart, and M. A. Warner in July 1951. Samples analyzed for P20 and acid insoluble by U. S. Bureau of Mines Laboratory, Albany, Oregon. SED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) 0 INSOLUBLE P2 5 Dinwoody formation--basal bed only Trd-1 Sandstone, calcareous; fos. C.101 noo. 12647 and 12649 N.S. Upper shale member of Phosphoria formation U- 14 Mudstone, phosphatic; fos. col. no. 12646 6507-TMC U- 13 Mudstone, calcareous 6506-TMC U- 12 Mudstone, calcareous 6505-TMC U- 11 Mudstone, calcareous 6504-TMC U- 10 Mudstone, calcareous 6503-TMC U9 Mudstone, calcareous 6502-TMC U8 Mudstone, phosphatic 6501-TMC U7 Mudstone, calcareous 6500-RAS U6 Phosphate rock, calcareous 6499-RAS U5 Mudstone, calcareous 6498-RAS U4 Mudstone 6497-RAS U3 Mudstone, calcareous 6496-RAS U2 Mudstone, phosphatic, calcareous 6495-RAS U1 Phosphate rock 6494-RAS Total thickness of upper shale member Rex member of Phosphoria formation--top and basal beds only R- 13 Limestone, phosphatic N,S., R- 12 Sandstone, phosphatic; fos. col. no. 12645 6493-RAS R- 11 Limestone, argillaceous N.S. R- 10 Limestone N.S. R9 Phosphate rock, calcareous 6492-RAS R8 Limestone N.S. R1 Chert N.S.

BED SAEPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 I:ZOLUBLE Phosphatic shale member of Phosphoria formation P- 37 P- 36 Phosphate rock and mudstone Mudstone, calcareous 6491-MAW 6490-MAW P- 35 Mudstone 6489-MAW P- 34 Mudstone, calcareous 6488-MAW P- 33 Mudstone, calcareous 6487-MAW P- 32 Mudstone, calcareous 6486-MAW P- 31 Mudstone 6485-MAW P- 30 P- 29 Mudstone, phosphatic, calcareous Mudstone 6484-MAW 6483-MAW P- 28 Mudstone 6482-MAW P- 27 Phosphate rock and phosphatic, ';alcareous mudstone 64814IAW P- 26 P- 25 Mudstone, phosphatic, calcareous Limestone 6480-11AW 6479-:MAW P- 24 Mudstone 6478-MAW P- 23 Mudstone 6477--MAW P- 22 P- 21 P- 20 P- 19 Mudstone, phosphatic Limestone, argillaceous Mudstone and argillaceous phosphate rock Mudstone, phosphatic, and calcareous mudstone 6476-Y.AW 6475-RGW 6474-RGW 6473-RGW P- 18 Phosphate rock, calcareous, argillaceous 6472-RGW P- 17 P- 16 Limestone, argillaceous Siltstone, calcareous 6471-RGW 6470-RGW P- 15 Mudstone, calcareous 6469-.RGW P- 14 Mudstone, calcareous 6468-RGW P- 13 Mudstone, phosphatic, and calcareous mudstone 6467-RGW P- 12 Limestone 6466-WW Notes Bed P-12 appears lenslike due to squeezing. P- 11 Limestone 6465-TMC P- 10 Mudstone, phosphatic, calcareous, PPand argillaceous, calcareous phosphate rock Limestone, argillaceous, phosphatic Limestone, argillaceous, phosphatic 6464-.TMC 6463-TUC 6462-TMC

BED SAMPLE TUICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE P7 Phosphate rock, calcareous 6461-TMC P6 Limestone 6460-TMC P5 Limestone 6459-TMC P4 Phosphate rock 6458-TMC P3 Mudstone, calcareous 6457-TMC P2 Phosphate rock 6456-TMC P1 Mudstone, phosphatic; fos, col. no. 12643 6455-RAS Total thickness of phosphatic shale member Wells formation--top bed only W- 14 Mudstone N.S.

CUMBERLA:D TRENCH, WYOMING, LOT NUMBER 1346 Phosphatic shale member of the Phosphoria formation measured and sampled near the ghost town of Cumberland, Wyoming, SWi NEI- sec. 19, T. 19 N., R. 117 W., Lincoln County, Wyoming, on the west limb of an anticline. Beds strike N. 15° E. and dip 300 W. Section measured and sampled by M. A. Warner, T. M. Cheney, R. A. Smart, and R. G. Waring in June 1951. Samples analyzed for P205 and acid insoluble by Trace Elements Section Laboratory, Denver, Colorado, BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE Rex member of Phosphoria formation--basal bed only ONO R- 1 Mudstone, cherty N.S. Phosphatic shale melTber of Phosphoria formation , P-80 Mudstone N.S. P-79 Mudstone, cherty N.S. P-78 Mudstone N,S, P-77 Mudstone, cherty N.S. P-76 Mudstone N.S. P-75 Mudstone, phosphatic 6253-MAW P-74 Mudstone 6252-1UN P-73 Mudstone, phosphatic 6251MAW P-72 Mudstone 6250-MAW P-71 Limestone, phosphatic 6249-MAW P-70 Mudstone and phosphate rock 6248-MAW P-69 Mudstone 624741AW P-68 Mudstone, phosphatic 6246-MAW P-67 Limestone, argillaceous 6245-MAW P-66 Mudstone 6244-MAW P-65 Mudstone, calcareous 6243-MAW P-64 Phosphate rock, argillaceous 6242-MAW P-63 Mudstone 6241-MAW P-62 Mudstone 6240-MAW P-61 Limestone, phosphatic 6239-MAW P-60 Limestone, argillaceous 6238-MAW P-59 Phosphate rock, argillaceous 6237-MAW P-58 Mudstone, calcareous 6236-MAW P-57 Phosphate rock, calcareous 6235-MAW P-56 Limestone, argillaceous 6234-MAW P-55 Mudstone, calcareous, phosphatic 6233-MAW P-54 Limestone 6232-MAW P-53 Mudstone 6231-MAW P-52 Mudstone; fos. col. no. 12573 6230-MAW P-51 Mudstone, calcareous 6229 MAW

BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE P-50 Mudstone, calcareous 6228-MAW P-49 Mudstone 6227-MAW P-48 Mudstone, calcareous, phosphatic 6226-MAW P-47 Mudstone 6225-MAW P-46 Mudstone 6224-MAW P-45 Mudstone, calcareous 6223-TMC P-44 Mudstone, calcareous 6222-TMC P-43 Mudstone, calcareous; fos. col. no. 12572 6221-TMC P-42 Mudstone, calcareous 6220-TMC P-41 Limestone, argillaceous, phosphatic 6219-TMC P-40 Limestone, argillaceous 6218-TMC P-39 Limestone, argillaceous, phosphatic 6217-TMC P-38 Phosphate rock, calcareous 6216-TMC Siltstone, calcareous, lens N.S. (1.2) P-37 Limestone, silty 6215-TMC P-36 Limestone, silty 6214-TIM P-35 Mudstone, calcareous, phosphatic 6213-TMC P-34 Limestone, phosphatic 6212-TMC P-33 Limestone 6211-TMC P-32 Limestone, argillaceous 6210-TMC P-31 Mudstone, calcareous, and phosphatic mudstone 6209-TMC P-30 Limestone, phosphatic, argillaceous 6208-TMC P-29 Mudstone, calcareous, and phosphatic mudstone 6207-TMC P-28 Limestone, argillaceous; fos. col. no. 12570 6206-TMC P-27 Mudstone, phosphatic 6205-TMC P-26 Phosphate rock, silty, and siltstone 6204-RGW P-25 Limestone, phosphatic; fos. col. no. 12569 6203-RGW P-24 Limestone, argillaceous 6202-KW P-23 P-22 Siltstone, phosphatic Limestone, argillaceous 6201-RGW 6200-RGIV 67,6 P-21 Limestone, argillaceous 6199-RGW 30,2 P-20 P-19 Sandstone and phosphate rock Siltstone 6198-RGW 6197-RGW P-18 Phosphate rock, argillaceous, calcareous, and phosphate rock; Los(' col. no. 12568 6196-RGW

BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE P-17 Limestone 6195-RGW P-16 Mudstone and phosphatic mudstone; contains calcite geodes; fos, col. no. 12567 6194-RGW P-15 Siltstone; fos. col. no. 12566 N.S. P-14 Siltstone N.S.

P-13 Limestone, silty; fos, col. no, 6193-RGW P-12 Siltstone N.S. OM MN P-11 Siltstone and chart N.S. OM .. P-10 Siltstone N.S. 4..0111 =MOM P- 9 Siltstone and chart N.S.

P- 8 Mudstone N.S. faM Cair 4,=2 4.. P- 7 Mudstone N.S. 0.119,0 P- 6 Siltstone, cherty N.S. - P- 5 Mudstone, calcareous; fos, col. no. 12564 N.S. OM MD P- 4 Siltstone, phosphatic 6192-RAS P- 3 Mudstone N.S. P- 2 Mudstone 6191-RAS P- 1 Mudstone, phosphatic fos. col. no. 12563 6190-RAS Total thickness of phosphatic shale member Wells formation--top bed onlx Mudstone N.S. 11.3, IMO

DEVILS SLIDE, UTAH, LOT NUEBER 1345 Park City formation measured and phosphatic beds sampled 4 miles east of Morgan, in Weber Canyon, sec. 26 (?), T. 4 N., R. 3 E., Morgan County, Utah. The section is on the east limb of an anticline dipping 200 E. and striking N. 4° E. Section measured by M. A. Warner, T. M. Cheney, R. G. Waring, and R. A. Smart and sampled by T. K. Rigby, R. A. Smart, and Y. A. Warner in June 1951. Samples analyzed for P205 and acid insoluble by Trace Elements Section Laboratory, Denver, Colorado. BED SATTLE THICKNESS ACID NO. ROCK DESCRIPTION NO (FEET) P205 I' SOLUBLE Upper member cf Park City formation--basal bed only U1 Limestone, siliceous N.S. Phosphatic shale member of Park City formation P-139 Siltstone, calcareous N.S. P-138 Siltstone, phosphatic 6182-RGW P-137 Siltstone, calcareous 6181-RGW P-136 Siltstone 6180-RGW P-135 Siltstone, calcareous 6179-RG17 P-134 Siltstone, calcareous, phosphatic 6178-RGW P-133 Siltstone, phosphatic, calcareous 6177-ROT P-132 Siltstone, phosphatic 6176-RGW P-131 Limestone, silty 6175-RG17 P-13n Siltstone 6174-KW P-129 Mudstone 6173-RGIN P-128 Siltstone 6172-RGW P-127 Siltstone, calcareous 6171-RAS P-126 Siltstone, calcareous 6170-RAS P-125 Mudstone, phosphatic 6169-RAS P-124 Mudstone 6168-RAS P-123 Phosphate rock, argillaceous 6167-RAS P-122 Limestone, argillaceous 6166-RAS P-121 Mudstone 6265-RAS P-120 Limestone, argillaceous 6164-RAS P-119 Mudstone and argillaceous phosphate rock 6163-RAS P-118 Mudstone and calcareous mudstone 6162-RAS P-117 Mudstone and phosphate rock 6161-RAS P-116 Limestone 6160-RAS P-115 Mudstone and phosphate rock 6159-RAS P-114 Limestone, silty 6158-TMC P-113 Mudstone and phosphate rock 6157-TMC P-112 Siltstone, calcareous 6156-TMC P-111 Limestone 6155-TMC P-110 Siltstone 6154-TMC

BED SAY.PLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE P-109 Phosphate rocky silty; phosphatic calcareous siltstone and calcareous phosphate rock 6153-TEC P-108 Siltstone, calcareous 6152-TMC P-107 Limestone, silty 6151-T1C P-106 Siltstone, calcareous 6150-TMC P-105 Phosphate rock and phosphatic mudstone 6149-TMC P-104 Limestone, silty 6148.TMC P-103 Phosphate rock and phosphatic mudstone 6147-TMC P-102 Limestone, argillaceous 6146-.TLC P-101 Phosphate rock, silty, calcareous 6145-TMC P-100 Mudstone, calcareous 6141-TMC P- 99 Limestone, phosphatic, silty 6143-TMC P- 98 Phosphate rock, silty; calcareous mudstone and phosphatic, calcareous mudstone 6142-TMC P- 97 Limestone 6141-7MC P- 96 Phosphate rock, silty 6140-TMC PS- 95 Mudstone, phosphatic; phosphate rock and mudstone 6139-TMC P- 94 Phosphate rock, silty 6138-TMC P- 93 Limestone, silty 6137-TMC P- 92 Limestone, argillaceous 6136-TMC P- 91 Phosphate rock, argillaceous 6135-TMC P- 90 Siltstone 6131-TMC P- 89 Siltstone 6133-TMC P- 88 Siltstone 6130-TMC P- 87 Siltstone 6129-TLC P- 86 Mudstone and phosphate rock 6128-TMC P- 85 Phosphate rock and mudstone 6127-TMC P- 84 Phosphate rock, argillaceous 6126-TMC P- 83 Mudstone, phosphatic 6125-TMC P- 82 Siltstone 6121-TMC P- 81 Breooiated zone N.S.

P- 80 Siltstone, calcareous N.S. P-- 79 Limestones fos. col. no. 12485 N.S. P- 78 Sandstone, calcareous N.S. Breccia N.S. OM OM P- 76 Sandstone, calcareous N.S. P- 75 Mudstone N.S. P- 74 Mudstone, phosphatic 6132-MAW P- 73 P- 72 Limestone, argillaceous Mudstone 6131-MAW NoS.

=POW P- 71 Mudstcm. N,S.

Om Mo

BED SAL PLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE P-109 Phosphate rock, silty; phosphatic calcareous siltstone and P-108 calcareous phosphate rock Siltstone, calcareous 6153-TEC 6152-TMC P-107 P-106 Limestone, silty Siltstone, calcareous 6151-11,1 C 6150-TMC P-105 Phosphate rock and phosphatic mudstone 6149-TMC P-I04 Limestone, silty 6148-TMC P-103 Phosphate rock and phosphatic mudstone 6147-TMC P-102 Limestone, argillaceous 6146-TEC P-101 Phosphate rock, silty, calcareous 6145-TMC P-100 Mudstone, calcareous 6144-TMC P- 99 P- 98 Limestone, phosphatic, silty Phosphate rock, silty; calcareous 6143-TEC mudstone and phosphatic, calcareous mudstone 6142-TMC P- 97 Limestone 6141-TMC P- 96 P- 95 Phosphate rock, silty Mudstone, phosphatic; phosphate rock and mudstone 6140-TMC 6139-TMC P- 94 P- 93 P- 92 P- 91 P- 90 Phosphate rock, silty Limestone, silty Limestone, argillaceous Phosphate rock, argillaceous Siltstone 6138-TMC 6137-TMC 6136-TMC 6135-TMC 6134-TMC P- 89 Siltstone 6133-TMC P- 88 P- 87 Siltstone Siltstone 6130-TMC 6129-TEC P- 86 P- 85 Mudstone and phosphate rock Phosphate rock and mudstone 6128-TMC 6127-MC P- 84 P- 83 P- 82 Phosphate rock, argillaceous Mudstone, phosphatic Siltstone 6126-TMC 6125-TMC 6124-TMC P- 81 Breooiated zone N.S. fta a.. P- 80 Siltstone, calcareous N.S.

P- 79 Limestones fos. col. no. 12485 N.S. P- 78 Sandstone, calcareous N0S,

P- 77 Breccia N.S. ft.. P- 76 Sandstone, calcareous 14S. P- 75 Mudstone N.S, P- 74 P- 73 P- 72 Mudstone, phosphatic Limestone, argillaceous Mudstone 6132-MAW 6131-MAW N,S. P- 71 Mudston N.S.

BED NO. ROCK DESCRIPTION SAMPLE NO) THICK/TESS (FEET) P205 ACID IKSOLUBLE P- 70 Mudstone N,S,

P- 69 Mudstone N.S, Mudstone and chert N.S.

P- 67 Mudstone N o S e P- 66 Mudstone N.S. 3,2 P- 65 Mudstone, calcareous 6123-11AW P- 64 Mudstone, calcareous 6122,41/kW P- 63 Mudstone, calcareous, phosphatic, P- 62 and phosphate rock Mudstone, calcareous 6121,JilAW 612041AW P- 61 Mudstone, calcareous 6119-MAW P- 60 P- 59 P- 58 P- 57 Limestone, argillaceous Limestone, argillaceous Limestone, argillaceous Mudstone, calcareous 61'4.8-MAW 6117-MAW 6116-MAW 6115 MAW P- 56 Phosphate rock, calcareous, argillaceous 6114-MAW P- 55 Mudstone N.S. P- 54 P- 53 Mudstone Mudstone N.S, N.S. 3,0 P- 52 P.- 51 Mudstone, cherty, and mudstone Mudstone, cherty N.S. N.S. P- 50 P- 49 Mudstone, cherty Mudstone N.S. N.S. P- 48 P- 47 Mudstone, cherty Mudstone N.S. N.S. P- 46 Mudstone N.S. P- 45 Mudstone, calcareous 6113-MAW P.- 44 Mudstone, calcareous 6112-MAW P- 43 Mudstone 6111-MAW P- 42 Mudstone 6110-MAW P. 41 Mudstone 6109-MAW P- 40 Mudstone, calcareous 6108-MAW P..- 39 Mudstone, calcareous 6107-MAW P- 38 Mudstone, calcareous 6106-MAW P- 37 Limestone 6105-MAW P.- 36 Mudstone, calcareous 6104-:MAW P" 35 Mudstone 6103, XAW P.- 34 Mudstone 6102-MAW P- 33 Mudstone 6101.-MAW P- 32 Mudstone 6100-:.MAW P- 31 Mudstone, calcareous 6099.-MAW P. 30 P- 29 Mudstone, calcareous Mudstone 6098-MAW 6097-MAW

BED - SAMPLE THICKLESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE P- 28 Limestone; fos. col. no. 12484 6096-MAW P- 27 Limestone, argillaceous; fos. col. no. 12484 6095-MAW P- 26 P- 25 Mudstone, calcareous Mudstone, calcareous 6094-YAW 6093-MAW P- 24 Limestone and phosphate rock 6092-MAW P- 23 P- 22 P- 21 P- 20 Mudstone and phosphatic mudstone Limestone, phosphatic Phosphate rock, argillaceous, calcareous Mudstone, calcareous 6091-MAW 6090-MAW 6089-MAW 6088-MAW 32,9 P- 19 Mudstone, phosphatic, calcareous 6087-11.k.',- P- 18 P- 17 P- 16 P- 15 P- 14 Limestone, phosphatic, argillaceous Mudstone, calcareous, phosphatic Mudstone, phosphatic Limestone, phosphatic, argillaceous Limestone 6086-MA17 6085-MAW 6084-MAW 6083-TTAW 6082-MAW P- 13 Phosphate rock, calct:.reous, argillaceous 6081-MAW P- 12 Limestone, phosphatic, argillaceous 6080-YAW P- 11 Limestone; chert and calcareous mudstone N.S. P- 10 Limestone, argillaceous; fos. col. no. 12483 6079-MAW P9 Mudstone, calcareous 6078-MAW PP- P8 Mudstone, phosphatic Limestone, argillaceous Limestone; fos. col. no. 12482 6077-MAW 6076-MAW 6075-MAW P5 Limestone; fos. col. no. 12482 6074-MAW P4 Mudstone N.S. P3 Mudstone, calcareous U.S. P2 Limestone, argillaceous N.S. P1 Mudstone, phosphatic, calcareous, and argillaceous phosphate rock 6185-RAS Total thickness of phosphatic shale member Lower member of Park City formation (?)--top bad only Mudstone, calcareous N.S.

SOLS CANYON, UTAH, LOT NUMBER 1348 Park City formation measured and phosphatic portions sampled from natural exposures and hand trenches on east side of Sols Oenyon, 10 miles southwest of Manila in 01:1 SNi sec. 2, T. 2 N., R. 111 W., Daggett County, Utah. Beds strike N. 80° E. and dip 38° N. Section measured and sampled by R. A. Smart, T. M. Cheney, and M. A. Warner in June 1951. Samples analyzed fca- P205 und acid insoluble by Trace Elements Section Laboratory, Denver, Colorado. BED SAMPLE THICKITESS ACID NO. ROCK DESCRIPTION NO. (FEET) P 0 INSOLUBLE Upper member of Park City formation--basal bed only IMO& 111.6001, U- 1 Covered N.S. Middle member of Park City formation M-47 Siltstone, calcareous N.S. 11=11 M-46 Mudstone and chert N.S. M-45 Mudstone, calcareous N.S.

MOO M-44 Mrdstone, calcareous N.S. M-43 Dolcmite, argillaceous 6285-MAW M-42 Mudstone 6284-MAW M-41 Mudstone, dolomitic 6283-MAW M-40 Mudstone, dolomitic 6282-MAW M-39 Mudstone, dolomitic 6281-MAW M-38 Weathered zone N.S. M-37 Dolomite, argillaceous, phosphatic 6280-MAW M-36 Limestone, phosphatic 62"-MAW M-35 Dolomite, calcareous 6278-MAW M-34 Mudstone, calcareous, and phosphatic, calcareous mudstone 6277-MAW M-33 Limestone, argillaceous, phosphatic 6276-MAW M-32 Phosphate rock and phosphatic, calcareous mudstone 6275-MAW M-31 Mudstone, dolomitic 6274-MAW M-30 Mudstone, calcareous, and calcareous phosphate rock 6273-MAW M-29 Mudstone, calcareous 6272-MAW M-28 Mudstone, silty (?) N.S. MB WIN M-27 Dolomite N.S.

M-26 Mudstone, calcareous 6271-RAS M-25 Mudstone, calcareous N.S. M-24 Mudstone, calcareous 6270-RAS M-23 Mudstone, calcareous 6269-RAS

BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE M-22 Brecciated zone N.S. M-21 Mudstone, calcareous, phosphatic 6268-RAS M-20 Mudstone 6267-RAS M-19 Limestone, phosphatic, argillaceous 6266-RAS M-18 Mudstone, calcareous N.S. M-17 Mudstone, calcareous 6265-RAS M-16 Mudstone N.S. M-15 Mudstone, calcareous N.S. M-14 Mudstone, calcareous 6264-RAS M-13 Limestone N.S. IMP ONO M-12 Limestone, argillaceous 6263-RAS M-11 Limestone, phosphatic, argillaceous 6262-RAS M-10 Limestone N.S. M- 9 Limestone, phosphatic 6261-RAS M- 8 Mudstone, calcareous 6260-RAS M- 7 Limestone, argillaceous 6259-RAS M- 6 Mudstone and soil N.S. SNOOD M- 5 Limestone, phosphatic, argillaceous 6258-RAS M- 4 Limestone, phosphatic, argillaceous 6257-RAS M- 3 Limestone, phosphatic 6256-RAS 1„7 M- 2 Mddstone, phosphatic, calcareous 6255-RAS Note: Units M-2 through M-7 are of questionable thickness and continuity, due to nearness to surface of ground; hence, highly weathered. M- 1 Limestone, phosphatic 6254-TMC Total thickness of middle member Lower member of Park City formation--top bed only Sandstone, calcareous Y.S.

FORT DOUGLAS, UTAH, LOT NUMBER 1350 Park City formation measured and sampled near Fort Douglas, E;5:- sec.17, T. 1 N., R. 2 E., Salt Lake County, Utah. Section measured from natural exposures and bulldozer trenches. Beds strike N. 730 E. and dip 680 S. Section measured and sampled by M. A. Warner, R. A. Smart, and T. M. Cheney. Samples analyzed for P205 and acid insoluble by Trace Elements Section Laboratory, Denver, Colorado. BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE Middle member of Park City formation M-242 Siltstone N.S. M-241 Siltstone N.S. M-240 Mudstone N.S. M-239 Mudstone N.S. M-238 Chert N.S. M-237 Mudstone, cherty N.S. M-236 Mudstone, cherty N.S.

M-235 Chert, argillaceous N.S. UM OM IMO M. M-234 Siltstone N.S. M-233 Chert, argillaceous N.S.

M-232 Chert, argillaceous N.S. M-231 Shear zone; brecciated siltstone N.S. M-230 Siltstone N.S. M-229 Mudstone 6406-MAW M-228 Limestone 6405-MAW M-227 Phosphate rock, argillaceous 6404-MAW M-226 Siltstone, calcareous N.S. M-225 Mudstone, cherty N.S. M-224 Mudstone N.S. M-223 Siltstone N.S. OW OM Y. GM 4.11' OM OM UM M-222 Siltstone N.S.

M-221 Mudstone N.S. M-220 Siltstone N.S. M-219 Chert N.S. OM OM MM. MO M-218 Mudstone N.S. WI OM MN I. M-217 Mudstone, cherty N.S. OM MOP OM !NW M-216 Mudstone N.S. WM MP MD IIMII M-215 Mudstone N.S. M-214 Mudstone N.S. M-213 Mudstone, phosphatic 6403-MAW M-212 Mudstone 6402-MAW M-211 Mudstone and phosphate rock 6401-MAW M-210 Limestone, silty 6400-MAW

BED NO. M-209 M- 208 M-207 M-206 M-205 M-204 M-203 M-202 M-201 M-200 M-199 M-198 M-197 M-196 M-195 M-194 M-193 M-192 M-191 M-190 M-189 M-188 M-187 M-186 M-185 M-184 M-183 M-182 M-181 M-180 M-179 M-178 M-177 M-176 M-175 M-174 M-173 M-172 M-171 M-170 ROCK DESCRIPTION Mudstone, calcareous Mudstone, calcareous Mudstone, phosphatic Mudstone Phosphate rock, argillaceous Mudstone, phosphatic Siltstone, calcareous Mudstone, siliceous Mudstone Mudstone, phosphatic Siltstone, calcareous Limestone, argillaceous; fos. col. no. 12528 Limestone, argillaceous Limestone and calcareous sandstone Limestone and calcareous sandstone Limestone Not described Mudstone, calcareous Chert, mudstone, and limestone Mudstone Mudstone Mudstone Mudstone Mudstone, calcareous; fos. col. no. 12527 Mudstone, calcareous Limestone, argillaceous Mudstone; fos. col. no. 12526 Mudstone Mudstone Mudstone Chert and mudstone; fos. col. no. Chert Mudstone, calcareous, and phosphatic mudstone Mudstone Mudstone Mudstone Mudstone Mudstone Mudstone, phosphatic Mudstone, calcareous SAMPLE THICKNESS ACID NO. (FEET) INSOLUBLE P 205 6399-MAW 6398-MAW 6397-MAW N.S. 3,8 6396-MAW N.S. ON* AMP N.S. N.S. N.S. 6407-MAW N.S. IMO OM Ole 1..1, N.S. N.S. N.S. N.S. /OM OM. N.S. N.S. N.S. 111.1. Owl N.S. ONO N.S. N.S. N.S. N.S. N.S. Om ONO N.S. N.S. 400. OM. OM ONO ONO OM N.S. N.S. N.S. OM OM N.S. N.S. N.S. 111111. N.S. MO .11 N.S. N.S. N.S. 6395-TMC 6394-TMC 6393-TMC

BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE M-169 Mudstone, calcareous, and cherty mudstone 6392-TMC 0.8 5.85 58.0 M-168 Mudstone, calcareous, and calcareous chert; fos. col. no. 6391-TMC 2.6 1.90 63.6 M-167 Mudstone, calcareous 6390-TMC M-166 Mudstone, calcareous 6389-TMC M-165 Mudstone, calcareous 6388-TMC M-164 Mudstone, calcareous 6387-TMC M-163 Mudstone, calcareous 6386-TMC M-162 Mudstone, calcareous 6385-TMC M-161 Mudstone, phosphatic, calcareous; fos. col. no. 12523 6384-TMC M-160 Siltstone N.S. 7.3 -- _M-158 Mudstone; fos. col. no. 12522 N.S. M-157 Mudstone N.S. M-159 Siltstone N.S. M-156 Mudstone, calcareous 6383-MAW M-155 Mudstone, calcareous 6382-MAW M-154 Mudstone, phosphatic 6381-MAW M-153 Siltstone N.S.

4.0 MOP M-152 Siltstone N.S. M-151 Siltstone N.S. M-150 Siltstone N.S. _M-149 Siltstone N.S. M-148 Siltstone, cherty N.S. M-147 Siltstone N.S. M-146 Siltstone N.S. M-145 Siltstone; fos. col. no. 12521 N.S. M-144 Siltstone N.S. M-143 Siltstone 4N.S. IMO 4.1.

M-142 Mudstone, cherty N.S. - M-141 Siltstone, calcareous N.S. M-140 Siltstone N.S. M-139 Mudstone; fos. col. no. 12520 6380-MAW M-138 Siltstone 6379-MAW 3.4 2.35 78.0 M-137 Limestone, argillaceous 6378-MAW M-136 Siltstone, calcareous 6377 MAW M-135 Mudstone, calcareous 6376-MAW M-134 Mudstone 6375-MAW 1.0 2.00 73.5 M-133 Mudstone 6374-:MAW 1.4 4.35 70.3 M-132 Limestone, argillaceous, phosphatic 6373-MAW 0.7 9.95 31.7 M-131 Limestone, argillaceous 6372-MAW

BED SAMPLE ThICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) INSOLUBLE P 205 M-130 M-129 M-128 M-127 M-126 Mudstone and phosphate rock Mudstone, calcareous Mudstone Mudstone, phosphatic Mudstone, phosphatic 6371-YAW 6370-MAW 6369-YAW 6368-YAW 6367-MAW M-125 M-124 M-123 M-122 M-121 Mudstone, calcareous Mudstone, phosphatic Mudstone, phosphatic; fos. col. no. 12519 Limestone; fos. col. no. 12518 Phosphate rock, argillaceous, calcareous 6366-MAW 6365-MAW 6364-MAW 6363-MAW 6362-MAW M-120 M-119 M-118 M-117 Limestone Phosphate rock, argillaceous Phosphate rock, argillaceous Mudstone 6361-MAW 6360-MAW 6359-MAW N.S. M-116 Chert and calcite N.S. M-115 M-114 M-113 M-112 M-111 Limestone Limestone, argillaceous Phosphate rock Phosphate rock; fos. col. no. Mudstone 6358-MAW 6357-MAW 6356-MAW 6355-MAW N.S. 15,9 M-110 M-109 M-108 M-107 M-106 Mudstone Mudstone, phosphatic Siltstone Mudstone Mudstone N.S. 6354-MAW N.S. N.S. N,S,

M-105 M-104 M-103 M-102 M-101 Mudstone Mudstone Mudstone Mudstone Mudstone N.S. N.S. N.S. N.S. N.S. 2,9 IMINO MOO. M-100 M- 99 M- 98 M- 97 M- 96 Mudstone Mudstone Mudstone Mudstone, cherty Mudstone N.S. N.S. N.S. N.S. N.S. =POW .1.11. 000 OM MM. M- 95 M- 94 M- 93 M- 92 M- 91 Mudstone Siltstone Mudstone Siltstone Mudstone, phosphatic N.S. N.S. N.S. N.S. 6353-MAW WM,OMR -

M- 90 Siltstone; fos. col. no. 12513 N.S.

BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) INSOLUBLE P205 M- 89 M- 88 M- 87 M- 86 M- 85 Chert Mudstone Limestone Limestone Chart N.S. 6352-RAS N.S. N3. . N.S. nom M- 84 M- 83 M- 82 M- 81 M- 80 Mudstone Limestone Mudstone, calcareous Chert Mudstone 6351-RkS N.6. 6350-RAS N.S. N.S. 3p3 OOP OM M- 79 M- 78 M- 77 M- 76 M- 75 Chart, argillaceous Mudstone, calcareous Chart, argillaceous Nudrtone, calcareous, and chart; fos. col. no. 12512 Mudstone, calcareous N.S. N.S. N.S. N.S. 6349-RAS 11.1, 11111. -

Y.- 74 M- 73 M- 72 M- 71 M- 70 Mudstone, calcareous, and chert Chart, argillaceous Limestone, argillaceous; fos. col. no. 12511 Chert Mudstone, calcareous N.S. N.S. 6348-RAS 6347-RAS N.S. 1.0 IMO 411.. OW M- 69 M- 68 M- 67 M- 66 M- 65 Mudstone, calcareous Mudstone, calcareous, and chart Mudstone, cherty, calcareous Limestone Mudstone, calcareous N.S. N.S. N.S. N.S. 6346-RAS OW. OM M- 64 M- 63 M- 62 M- 61 M- 60 Mudstone, calcareous, and chart Mudstone Mudstone, calcareous Mudstone, calcareous, phosphatic Mudstone, calcareous, and chart N.S. N.S. N.S. 6345-RAS N.S. IMO IMO OW NIP M- 59 M- 58 M- 57 M- 56 M- 55 Mudstone, calcareous Limestone; fos. col. no. 12510 Mudstone, calcareous Mudstone, calcareous Mudstone N.S. N.S. 6344-RAS N.S. N.S. OMR

M- 54 M- 53 M- 52 LT- 51 M- 50 Mudstone Mudstone, calcareous; fos. col. no. 12509 Mudstone Mudstone Mudstone N.S. N.S. N.S. N.S. N.S. Mad.. Mao. 001.01,

BED NO. ROCK DESCRIPTION SAMPLE NC. THICKNESS (FEET) P205 ACID IhSOLUBLE M- 49 M- 48 M- 46 M- 45 Yudstone, dolomitic Limestone; fos. col. no. 12508 Mudstone, calcareous; fos. col. no. 12507 Covered Limestone U.S. r.s. N.S. N.S. U.S. M- 44 M- 13 E- 42 M- 41 M- 40 Mudstone, calcareous; fos. col. no. 12506 Limestone Limestone, argillaceous; fos. col. no. 12505 Mudstone, cherty; fos. col. no. Mudstone, cherty; fos. col. no. N.S. N.S. N.S. N.S. N.S. 0.0 MO M- 39 M- 38 M- 37 M- 36 M- 35 Mudstone, calcareous Mudstone, calcareous Mudstone, calcareous Mudstone, calcareous; fos. col. .no. 12503 Wudstone, calcareous; fos. col. no. 12502 N.S. N.S. N.S. N.S. N.S. In, OM M- 34 M- 32 M- 31 M- 30 Mudstone Limestone, argillaceous Limestone, cherty Limestone, argillaceous Mudstone N.S. N.S. N.S. N.S. N.S. M- 28 M- 27 M- 26 M- 25 Mudstone Mudstone Mudstone Mudstone, calcareous Mudstone, calcareous N.S. N.S. N.S. N.S. N.S. - OMB OW MO. M- 24 M- 23 M- 22 M- 21 M- 20 Mudstone, calcareous Mudstone, calcareous Mudstone, calcareous Mudstone, calcareous Mudstone, calcareous N.S. N.S. N.S. N.S. N.S. M- 19 M- 18 M- 17 M.- 16 M- 15 Limestone, argillaceous Limestone, argillaceous Phosphate rock, calcareous Limestone, argillaceous Yudstone, calcareous 6343-TMC 6342-TIM 6341-TIC 6310-TMC N.S. 6,25 M- 14 M- 13 Yudstone, calcareous Yudstone, calcareous T.S. 1N.S.

BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P 0 INSOLUBLE M- 12 Mudstone, calcareous; fos. col. no. 12517 N.S. M- 11 Mudstone, calcareous N.S. M- 10 Mudstone, calcareous N.S. M- 9 Limestone, phosphatic, argillaceous 6339-TMC M- 8 Mudstone, calcareous N.S. M- 7 Mudstone, calcareous N.S. M6 Mudstone N.S. WM MM. 4=0 IMO OM M5 Mudstone, calcareous N.S. M4 Mudstone N.S. M- 3 Mudstone, calcareous N.S. M- 2 Covered N.S. M- 1 Phosphate rock, calcareous 6338-TMC Total thickness of middle member Lower member of Park City formation--top bed only Limestone N.S.

PINON CANYON, UTAH, LOT NUMBER 1347 Section of Park City formation measured and phosphatic beds sampled in hand trenches and natural exposures on north flank of the Uinta Mountains axis, sec. 14, T. 1 S., R. 6 E., Summit County, Utah, 3 miles east of Oakley, Utah. Beds strike N. 80° E. and dip 300 N. Lower contact is not well defined and is questionable; upper contact is not exposed. Section measured and sampled by T. M. Cheney, R. A. Smart, M. A. Warner, and R. G. Waring in June 1951. Samples analyzed for P205 and acid insoluble by Trace Elements Section Laboratory, Denver, Colorado. BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE Park City formation PC-120 Limestone, dolomitic; fos. col. no. 12500 N.S. PC-119 Dolomite, argillaceous; fos. col. no. 12500 N.S. PC-118 Dolomite; fos. col. no. 12500 N.S. PC-117 Limestone, dolomitic; fos. col. no. 12500 N.S. WM. PC-116 Dolomite, argillaceous; fos. col. no. 12500 N.S. PC-115 Limestone, dolomitic; fos. col. no. 12500 N.S. IN. SIM PC-114 Siltstone, calcareous; fos. col. no. 12500 N.S. PC-113 Siltstone, calcareous; fos. col. no. 12500 N.S. - PC-112 Siltstone, calcareous OW MOO PC-111 Siltstone, calcareous N.S. PC-110 Siltstone, calcareous N.S. PC-109 Siltstone, calcareous; fos. col. no. 12499 N.S. OW WO PC-108 Limestone N.S. PC-107 Limestone, silty 6320-RAS 6,90 PC-106 Sandstone (?), calcareous N.S. PC-105 Limestone, lithographic N.S. PC-104 Limestone, lithographic N.S. PC-103 Mudstone, calcareous, laminated N.S. Med.. PC-102 Mudstone, calcareous N.S. PC-101 Mudstone, calcareous N.S. PC-100 Dolomite, argillaceous N.S. MOWS PC- 99 Siltstone N.S. OM. MED MO .11 MOWS PC- 98 Siltstone, dolomitic N.S. 11111.M. PC- 97 Dolomite, argillaceous N.S. PC- 96 Mudstone, calcareous N.S. PC- 95 Limestone, argillaceous N.S.

BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P 0 2 5 INSOLUBLE PC- 94 Siltstone N.S. PC- 93 Sandstone, calcareous N.S. L:.2 PC- 92 Sandstone N.S.

PC- 91 Sandstone, calcareous N.S. PC- 90 Siltstone, dolomitic N.S.

PC- 89 Mudstone, dolomitic 6319-MAW PC- 88 Dolomite, argillaceous 6318-MAW PC- 87 Dolomite, sandy, and argillaceous limestone N.S.

PC- 86 Limestone, argillaceous N.S. PC- 85 Limestone; fos. col. no. 12498 N.S. PC- 84 Sandstone; Pos. col. no. 12498 N.S. PC- 83 Sandstone, calcareous; fos. col. no. 12498 N.S.

PC- 82 Chert and calcareous sandstone; fos. col. no. 12498 N.S.

PC- 81 Chert N.S. CM* MO PC- 80 Siltstone N.S. PC- 79 Siltstone, cherty Siltstone, dolomitic N.S. N.S.

PC- 77 Siltstone; fos. col. no. 12497 N.S. OM MD a... OM PC- 76 Siltstone, dolomitic N.S.

PC- 75 Dolomite, argillaceous; fos. col. no. 12496 Y.S. 4. OM OM I.* PC- 74 Sandstone, calcareous N.S. PC- 73 Dolomite N.S.

PC- 72 Chert and cherty dolomite N.S.

PC- 71 Chert N.S.

PC- 70 Sandstone, calcareous N.S.

PC- 69 Chert N.S. PC- 68 Chert N.S. PC- 67 Limestone, sandy N.S. US .W PC- 66 Limestone N.S. OM AIM PC- 65 Chert N.S. IM, 4M, NM PC- 64 Chert and dolomite N.S. OM .00 O. Mb pC- 63 Limestone, cherty N.S. OM 4.. PC- 62 Chert N.S.

pC- 61 Limestone, sandy N.S. PC- 60 Siltstone, calcareous; fos. col. no. 12495 N.S.

PC- 59 Siltstone, calcareous; fos. col. no. 12495 N.S. PC- 58 Siltstone, calcareous, fos. col. no. 12495 N.S.

BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE PC- 57 Siltstone, calcareous; fos. col. no. 12494 N.S. PC- 56 Siltstone, calcareous; fos. col. no. 12494 N.S. INS ON.

PC- 55 Siltstone; fos. col. no. 12494 N.S. PC- 54 Covered; fos. col. no. 12494 N.S. PC- 53 Limestone; fos. col. no. 12494 N.S. PC- 52 Limestone, argillaceous; fos. col. no. 12493 N.S. PC- 51 PC- 50 Limestone, argillaceous Siltstone, calcareous N.S. N.S.

PC- 49 Mudstone, calcareous; fos. col. no. 12492 N.S. PC- 48 Dolomite, cherty N.S. MO M.. PC- 47 Limestone, phosphatic; fos. col. no. 12492 6317-RAS PC- 46 PC- 45 Limestone, argillaceous Limestone; fos. col. no. 12491 6316-RAS 5315-R.AS PC- 44 Siltstone (?), cherty, calcareous PC- 43 Mudstone, calcareous 6314-RAS 6313-RAS PC- 42 PC- 41 Siltstone, cherty, calcareous Limestone N.S. N.S. MO OM PC- 40 PC- 39 PC- 38 Limestone, cherty Mudstone, p''os-o;atic, calcareous Dolomite, argillaceous N.S. 6312-RAS 6311-RAS PC- 37 PC- 36 Mudstone, dolomitic, phosphatic Mudstone, dolomitic 6310-RAS 6309-RAS PC- 35 Dolomite N.S. MO .. .M. PC- 34 Dolomite N.S.

ale MN, PC- 33 Dolomite N.S. PC- 32 Limestone, dolomitic N.S. WO PC- 31 Limestone, N.S. PC- 30 Mudstone, cherty PC- 29 Limestone N.S. N.S.

Mil ... PC- 28 Siltstone N.S. PC- 27 Siltstone, calcareous, and chert N.S.

PC- 26 Siltstone, calcareous, and chert N.S. .0 OW OM PC- 25 Chert N.S. PC- 24 Siltstone and chert N.S. PC- 23 Mudstone 6308-TNC PC- 22 PC- 21 PC- 20 PC- 19 Limestone, argillaceous Limestone, argillaceous Limestone, argillaceous Mudstone, calcareous 6307-TMC 6306-TMC 6305-TMC 6304-TMC

BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE PC- 18 PC- 17 Siltstone, calcareous Siltstone, calcareous 6303-TMC 6302-RGW PC- 16 Siltstone, calcareous 6301-RGW PC- 15 Limestone 6300-RGW PC- 14 Siltstone, calcareous 6299-RGW PC- 13 Siltstone 6298-RGW PC- 12 Sandstone, calcareous 6297-RGW PC- 11 Siltstone, calcareous 6296-RGW PC- 10 Siltstone, calcareous 6295-RGW PC9 Siltstone, ca lcareous, phosphatic 6294-RGW PCPC8 Siltstone, calcareous, phosphatic Limestone, argillaceous, 6293-RGW PC6 phosphatic Phosphate rock, argillaceous, 6292-RGW calcareous 6291-RGW PC5 Limestone 6290-RGW PC4 Limestone, argillaceous, phosphatic 6289 -RGW PC3 Siltstone, calcareous, and PCPC2 argillaceous phosphate rock Phosphate rock, calcareous Phosphate rock; fos. col. no. 6288-RGW 6287-RGW 6286-RGW Total thickness of measured section Weber formation--top bed only W5 Sandstone, calcareous; fos. col. no. 12490 N.S. MID IMO

STRAWBERRY VALLEY, UTAH, LOT NUMBER 1371 Park City formation measured and sampled partially from bulldozer trenches and partially in natural exposures in Willow Creek Canyon 2 miles north of highway 40, NV`i sec. 14, T. 2 S., R. 12 W., Wasatch County, Utah. Beds strike N. 30° W. and dip 50° W. The section is overturned 350 to near vertical. Section measured and sampled by R. A. Smart, T. M. Cheney, and R. G. Waring in September 1951. Samples analyzed for P205 and acid insoluble by U. S. Bureau of Mines Laboratory, Albany, Oregon. BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE Woodside formation--not measured Park City formation MOO.. PC-175 Dolomite N.S. PC-174 Chert breccia N.S. PC-173 Dolomite N.S. PC-172 Covered N.S. PC-171 Sandstone, calcareous N.S. PC-170 Clastic limestone N.S. ONO SIM PC-169 Limestone and chert N.S. OM* Ma PC-168 Covered N.S. PC-167 Sandstone, calcareous N.S. PC-166 Chert and dolomite N.S. PC-165 Limestone, dolomitic N.S. OM MO PC-164 Sandstone and sandy limestone N.S. OMB PC-163 Sandstone, dolomitic N.S. PC-162 Chert, sandstone, and phosphatic .11 ONO ONO sandstone; fos. col. no. 12625 N.S. OMNI. PC-161 Sandstone N.S. PC-l60 Sandstone N.S. PC-159 Sandstone and chert N.S. PC-158 Siltstone N.S. ONO PC-157 Siltstone N.S. 4.111 ONO PC-156 Siltstone N.S. PC-155 Siltstone N.S. PC-154 Siltstone N.S. PC-153 Siltstone, calcareous 6618-RGW PC-152 Phosphate rock, calcareous, and mudstone 6617-RGW PC-151 Siltstone, calcareous 6616-RGW PC-150 Mudstone, phosphatic, calcareous, and mudstone 6615-RGW PC-149 Siltstone and phosphate rock 6614-RO1N UM, 1.1.

PC-148 Siltstone, dolomitic N.S. Oat MN PC-147 Mudstone N.S.

BED NO. ROCK DESCRIPTION SAMPLE NO. THICKNESS (FEET) P205 ACID INSOLUBLE PC-146 PC-145 PC-144 PC-143 PC-142 Chert and mudstone Mudstone Mudstone Mudstone Mudstone, phosphatic, and phosphate rock N.S. N.S. N.S. N.S. 6613-TMC MO MO PC-141 PC-140 PC-139 PC-138 PC-137 Mudstone, calcareous Mudstone, calcareous Siltstone Siltstone, calcareous Siltstone, calcareous N.S. N.S. N.S. N.S. 6612-RGW /MD OM MD ONO OM MI PC-136 Phosphate rock, argillaceous PC-135 Limestone, silty, and calcareous mudstone PC-l34 Mudstone, phosphatic, calcareous PC-133 Phosphate rock PC-132 Siltstone, calcareous 6611-RGW 6610-RGW 6609-RGW 6608-RGW N.S. 23.,9 PC-131 PC-130 PC-129 PC-128 PC-127 Limestone, silty Dolomite Siltstone, calcareous; siltstone, and chert Mudstone, phosphatic, calcareous Phosphate rock and calcareous mudstone 6607-RGW N.S. N.S. 6606-RGW 6605-RGW PC-126 Phosphate rock PC-125 Dolomite PC-124 Mudstone PC-123 Dolomite PC-122 Siltstone 6604-RGW N.S. N.S. N.S. N.S. am Om M.A.* PC-121 PC-120 PC-119 PC-118 PC-117 Siltstone, cherty Siltstone, cherty Mudstone and chert breccia Siltstone, calcareous, and calcareous chert breccia Chert and phosphatic mudstone N.S. N.S. N.S. N.S. N.S. *SUM - SWOON* =MOM PC-116 PC-115 PC-114 PC-113 PC-112 Siltstone Siltstone, chert, and mudstone Chert Siltstone, dolomitic Chert N.S. N.S. N.S. N.S. N.S. 010. OM, - 0.1.01, - - PC-111 PC-110 PC-109 Siltstone, cherty Chert and siltstone Phosphate rock, calcareous, and siltstone N.S. N.S. 6603-RGW .0000/0

BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) INSOLUBLE P205 PC-108 PC-107 PC-106 PC-105 Siltstone Siltstone and argillaceous, calcareous phosphate rock Siltstone and calcareous phosphate rock Mudstone N.S. N.S. N.S. N.S. Cal MY ttl PC-104 Mudstone N.S. PC-103 Mudstone N.S. PC-102 Mudstone N.S . PC-101 PC-100 PC- 99 Mudstone and phosphatic mudstone Phosphate rock, calcareous Mudstone, calcareous, and phosphatic mudstone N.S. 6602-RAS 6601-RAS MI OM, PC- 98 PC- 97 PC- 96 PC- 95 PC- 94 Mudstone Mudstone, dolomitic Phosphate rock, calcareous Limestone, argillaceous Phosphate rock, argillaceous N.S. N.S. 6600-RAS 6599-RAS 6598-RAS PC- 93 PC- 92 PC- 91 PC- 90 PC- 89 Mudstone, phosphatic Limestone, argillaceous Mudstone Mudstone Mudstone 6597-RAS 6596-RAS N.S. N.S. N.S. Ian (Ma PC- 88 PC- 87 PC- 86 PC- 85 PC- 84 Mudstone Mudstone, calcareous Mudstone Mudstone Mudstone, calcareous, phosphatic N.S. N.S. N.S. N.S. 6595-RAS 1,,1 PC- 83 PC- 82 PC- 81 PC- 80 PC- 79 Mudstone, phosphatic Mudstone, calcareous Phosphate rock, argillaceous, and phosphate rock Siltstone Siltstone, dolomitic 6594-RAS 6593-RAS 6592-RAS N.S. N.S.

W- PC- 78 PC- 77 PC- 76 PC- 75 PC- 74 Dolomite; fos. col. no. 12626 Siltstone Siltstone Siltstone Siltstone N.S. N.S. N.S. N.S. N.S. PC- 73 PC- 72 PC- 71 Siltstone Siltstone Siltstone N.S. N.S. N.S. PC- 70 PC- 69 Chert, argillaceous Mudstone, cherty N.S. N.S.

BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) INSOLUBLE P205 PC- 68 PC- 67 PC- 66 PC- 65 PC- 64 Mudstone Chert, argillaceous Mudstone Mudstone Siltstone N.S. N.S. N.S. 6591-RAS N.S. Om MP Oa OM, ma Om ONO SIN PC- 63 PC- 62 PC- 61 PC- 60 PC- 59 Siltstone Covered Sandstone Sandstone Sandstone NO S. N.S. N.S. N.S. N.S. IMP OMMO PC- 58 Sandstone PC- 57 Covered PC- 56 Sandstone, calcareous PC- 55 Covered PC- 54 Sandstone, calcareous N.S. N.S. N.S. N.S. N.S. 01.1,011. PC- 53 PC- 52 PC- 51 PC- 50 PC- 49 Sandstone, calcareous Covered Covered Dolomite, siliceous Covered N.S. N.S. N.S. N.S. N.S. =MOM 411.11=1. PC- 48 PC- 47 PC- 46 PC- 45 PC- 44 Limestone Siltstone Dolomite, siliceous Covered Covered N.S. N.S. N.S. N.S. N.S. .16 OEM gni 1M. PC- 43 PC- 42 PC- 41 PC- 40 PC- 39 Covered Limestone, dolomitic Sandstone, calcareous Covered Limestone, cherty N.S. N.S. N.S. N.S. N.S. - OMMAIMO

PC- 38 Limestone PC- 37 Siltstone, dolomitic PC- 36 Chert and calcareous siltstone PC- 35 Covered PC- 34 Siltstone, calcareous N.S. N.S. N.S. N.S. N.S. OISM. =nue WO UM PC- 33 PC- 32 PC- 31 PC- 30 PC- 29 Limestone, arenaceous Siltstone Mudstone, calcareous Siltstone Siltstone N.S. N.S. N.S. N.S. N.S. .1 - OEM OM M. WO, MONO

OEM PC- 28 PC- 27 PC- 26 Siltstone Covered Siltstone N.S. N.S. N.S. 4.0 41110

BED NO. ROCK DESCRIPTION SAMPLE NO. THICKNESS (FEET) P205 ACID INSOLUBLE PC- 25 Siltstone PC- 24 Siltstone PC- 23 Siltstone PC- 22 Mudstone PC- 21 Siltstone NoS o N0S0 NOS, NoS o N.S. flO

PC- 20 PC- 19 PC- 18 PC- 17 PC- 16 Limestone, arenaceous Limestone, arenaceous Siltstone, calcareous Sandstone, calcareous Siltstone, calcareous NOS, N.S. NOS. N.S. NoS.

— PC- 15 PC- 14 PC- 13 PC- 12 PC- 11 Limestone, arenaceous Limestone, arenaceous Limestone, dolomitic Limestone, arenaceous Sandstone N.S. N.S. NoS o N050 N0S0 .0 PO dm Cm. AMMI PC- 10 PC9 PC8 PC7 PC6 Limestone Covered Limestone Limestone Covered N.S. NoS o N.S. NOS., N.S. .110.1 OEM PCPCPCPCPC5 Limestone, sandy 4 Limestone 3 Covered 2 Limestone 1 Limestone N,S0 N0S0 N.S. N,S0 N.S.

11=1.0 Total thickness of Park City formation 1,416.6 Oquirrh formation (?) 01 Sandstone, calcareous N0S0 N.Y.

LITTLE DIAMOND CREEK, UTAH, LOT NUMBER 1376 Part of middle member of Park City fonnation measured and sampled in old open pit mine under lease to American Smelting and Refining Co. near head of Little Diamond Creek, Si SEri sec. 22, T. 8 S., R. 4 E0, Utah County, Utah. Beds strike N. 200 W. and dip 300 NE. Section measured by T. M. Cheney and sampled by R. G. Waring in October 1951. Samples analyzed for P205 and acid insoluble by U. S. Bureau of Mines Laboratory, Albany, Oregon. BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE Middle member of Park City formation Covered N.S. N.M. PC-5 Phosphate rock 6798-TMC PCPhosphate rock 6797-TMC PC-3 Phosphate rock 6796-TMC PC-2 Phosphate rock 6795-TMC Notes PC-2 and PC-1 measured about 60 feet apart along strike; no definite correlation between these units, but no more than 1.5 feet of section missing and probably no less than 0.5 feet of section missing. This thickness would be similar to PC-2. PC-1 Dolomite N.S. Covered N.S, Total thickness of measured section

PROVIDENCE CANYON, UTAH, LOT NUMBER 1374 Phosphatic shale member of Brazer formation measured in Providence Canyon, T. 11 N., R. 2 E., Cache County, Utah. Beds dip gently east. Section measured and sampled by R. W. Swanson and R. G. Waring in September 1951. Samples analyzed for P205 and acid insoluble by U. S. Bureau of Mines Laboratory, Albany, Oregon. BED SAMPLE THICKNESS ACID NO. ROCK DESCRIPTION NO. (FEET) P205 INSOLUBLE Phosphatic shale member of Brazer formation B-10 Mudstone 6776-RWS B- 9 Mudstone, phosphatic 6777-RWS B- 8 Limestone N.S. B- 7 Mudstone, phosphatic 6778-RWS B- 6 Limestone N.S. --, , B- 5 Mudstone, phosphatic, calcareous 6779-RWS B- 4 Mudstone, calcareous; contains limestone concretion N.S. B- 3 Limestone N.S. B- 2 Mudstone N.S. B- 1 Chert N.S. Note: Beds below are covered. Total thickness of measured section

c.