Geologic map of the Providence Mountains in parts of the Fountain Peak and adjacent 7.5' quadrangles, San Bernardino County, California

Stone, Paulpastone@usgs.gov, Miller, David M.- dmiller@usgs.gov, Stevens, Calvin H., Rosario, Jose J. jrosario@usgs.gov · 2017 · Report

Introduction The Providence Mountains are in the eastern Mojave Desert about 60 km southeast of Baker, San Bernardino County, California.

This 2017 document, Geologic map of the Providence Mountains in parts of the Fountain Peak and adjacent 7.5' quadrangles, San Bernardino County, California, is preserved in the Mountain Man Mining Library for research and reference. Original source: pubs.usgs.gov.

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METERS METERS Zu z z l c c c bp bb bs bu d D d D d Dl Dl Dl Mm Mm Mm Dl Mm P b P b P b P b ms cs ch Zu Zu Xm Zj Zj QTs Qya Jfr Jdf Jdf Jdf ? ? C' METERS METERS P b P b P b P b P b P b P b P b Jfr Jfr Jg P b Mm Mm Mm Mm Mm Mm Mm Mm Mm Mm Dl Dl Dl Dl Dl Dl Dl Dl P b P b P b d d d d d d d d bu bu bu bu bu bu c ch c c ch ch l l l z Zu Zj Zj Zj Zj Xm Xm Xm Xm Zu Zu Zu Zu c c c c ch ch c c bu bu bs bs bs bs bs bs bs bs bb bb bb bb bb bb bb bb bb bb bp bp bp bp bp bp bp bp bp bp D d D d D d D d D d D d D d D d D d z z z z Jdf Jdf Jdf Jgqm Jgqm Qia Qya Qia B B' METERS METERS bb bu bs D d d D d P b bp c c ch l z z l Zu Zu Zu Xm Xm Jgm Jdf Jdf Jgg Jgs Jgqm Jgqm Zj Zj QTs Qaa c Mm Dl bp bb A A' Index map showing map area and names of 7.5' topographic quadrangles FOUNTAIN PEAK HAYDEN COLUMBIA MOUNTAIN COLTON WELL 115o37'30" 115o30'00" 115o22'30" 35o07'30" 35o00'00" 34o52'30" MAP AREA QTs QTt Qaa mw ml Qe Qia Qoa QToa Tw4 Tw3 Tw2u Tw2w Tw1 Tp Jdd Jdf Jap Jbw Jt Qya Jgs Jgqm Jgm Jgmr Jfr Jg Jgg Jfl J c ml ms P b Mm Dl D d d bu bs bb bp Jfs c cs ch l z Zu Zj Xq Xm Jgr LIST OF MAP UNITS Modified land (Holocene) Mine waste (Holocene) Eolian sand (Quaternary) Slope deposits, undivided (Quaternary and Pliocene?) Travertine and tufa (Quaternary and (or) Pliocene) Alluvial deposits (Holocene to Pliocene?) Active and recently active alluvial deposits (Holocene) Young alluvial deposits (Holocene and latest Pleistocene) Intermediate alluvial deposits (late to middle Pleistocene) Old alluvial deposits (middle to early Pleistocene) Extremely old alluvial deposits (early Pleistocene to Pliocene?) Wild Horse Mesa Tuff (Miocene) Unit 4 Unit 3 Unit 2 Unwelded facies Welded facies Unit 1 Peach Spring Tuff (Miocene) Diabase dikes (Jurassic?) Felsic to intermediate dikes (Jurassic) Aplite dikes (Jurassic) Monzogranite of Bonanza King Well (Jurassic) Monzogranite of Tough Nut Spring (Jurassic) Quartz Monzonite of Goldstone (Jurassic) Undivided rocks Gabbro and diorite Fine-grained syenite to syenogranite Quartz monzonite Monzogranite Red monzogranite Altered reddish-brown granitic rocks Fountain Peak Rhyolite (Jurassic) Rhyolite Sandstone, conglomerate, and tuff Limestone Limestone-clast conglomerate (Jurassic or Triassic) Moenkopi Formation (Triassic) Limestone member Sandstone member Bird Spring Formation (Permian and Pennsylvanian) Monte Cristo Limestone (Mississippian) Limestone, dolomite, and quartzite (Devonian) Dolomite, sandy dolomite, and quartzite (Devonian to Cambrian) Dunderberg Shale (Cambrian) Bonanza King Formation (Cambrian) Upper member Silver King Dolomite Member Banded Mountain Member Papoose Lake Member Cadiz Formation (Cambrian) Siltstone unit Chambless Limestone (Cambrian) Latham Shale (Cambrian) Zabriskie Quartzite (Cambrian) Wood Canyon Formation and Stirling Quartzite, undivided (Cambrian and Neoproterozoic) Johnnie Formation (Neoproterozoic) Quartz veins or dikes (Paleoproterozoic?) Metamorphic and plutonic rocks, undivided (Paleoproterozoic) QTt Qaa Qya Qia Qoa QToa bu bs bb bp Tw4 Tw3 Tw2u Tw2w Tw1 QTs Qe mw ml CORRELATION OF MAP UNITS JURASSIC TRIASSIC MISSISSIPPIAN DEVONIAN CAMBRIAN NEOPROTEROZOIC PALEOPROTEROZOIC DEVONIAN TO CAMBRIAN PERMIAN AND PENNSYLVANIAN JURASSIC OR TRIASSIC Tp Quaternary Holocene Pleistocene Pliocene? Miocene Tertiary? Tertiary Jdd Jdf Jap Jbw Jt J c P b Mm Dl D d d c cs ml ms Jfl Jfs Jfr Jgr Jgmr Jgm Jgqm Jgs Jgg Jg CENOZOIC ch l z Zu Zj Xq Xm A' A EXPLANATION OF MAP SYMBOLS Contact—Dashed where approximate Basal contact of slide block—Hachures are on slide block Fault—Dashed where inferred, dotted where concealed. Includes both normal and reverse faults. Showing dip where known. Bar and ball on downthrown side where known or inferred. Arrows show sense of lateral offset where known or inferred Fault-line scarp—Hachures point downscarp Anticline—Trace of axial surface Syncline—Trace of axial surface. Arrow shows direction of plunge where known or inferred Strike and dip of beds Inclined Vertical Overturned Horizontal Strike and dip of igneous foliation Inclined Vertical Strike and dip of metamorphic foliation Inclined Vertical Tuff locality—Ash deposits correlated with upper tuffs of Glass Mountain or Bishop Tuff (age ~0.87 to 0.76 Ma) based on tephrochronologic analysis (see pamphlet, appendix 5) Line of structural cross section PANORAMIC VIEWS OF MAP AREA Explanation of unit symbols on photographs: Jp, Jurassic plutonic rocks; Jfr, Jurassic Fountain Peak Rhyolite; P b, Pennsylvanian and Permian Bird Spring Formation; u, undifferentiated Paleozoic rocks. Note that units Jp and u each combine multiple units shown on the geologic map. Jfr Jp Jp Jp Jfr Jfr P b P b P b P b u u u u u View from east View from west View from south 115°37'30" 115°29'00" 115°32'30" 115°35'00" 35°00'30" 115°37'30" 34°54'00" 35°00'30" 35°00'00" 35°00'00" 115°29'00" 34°54'00" 34°57'30" 34°57'30" 34°55'00" 34°55'00" 115°30'00" 115°32'30" 115°35'00" 115°30'00" U.S. Department of the Interior U.S. Geological Survey Scientific Investigations Map 3376 Pamphlet accompanies map Base from U.S. Geological Survey, 7.5-minute Colton Well (1984), Columbia Mountain (1983), Fountain Peak (1985), and Hayden (1983) quadrangles Universal Transverse Mercator projection 1927 North American Datum Clark 1866 Ellipsoid, Zone 11 Geology mapped 2006-2014 by P. Stone GIS database and digital cartography by S.S. Priest and Z.C. Valin Edited by J.L. Zigler Manuscript approved for publication February 7, 2017 APPROXIMATE MEAN DECLINATION, 2017 11 / ° MAGNETIC NORTH TRUE NORTH 7000 FEET 1 KILOMETER SCALE 1:24 000 CONTOUR INTERVAL 5, 10, and 20 METERS NATIONAL GEODETIC VERTICAL DATUM OF 1929 1/2 1 MILE CALIF. MAP LOCATION Geologic Map of the Providence Mountains in Parts of the Fountain Peak and Adjacent 7.5' Quadrangles, San Bernardino County, California By Paul Stone,1 David M. Miller,1 Calvin H. Stevens,2 Jose Rosario,1 Jorge A. Vazquez,1 Elmira Wan,1 Susan S. Priest,1 and Zenon C. Valin1 Any use of trade, firm, or product names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government. This map was printed on an electronic plotter directly from digital files. Dimensional calibration may vary between electronic plotters and between X and Y directions on the same plotter, and paper may change size due to atmospheric conditions; therefore, scale and proportions may not be true on plots of this map. For sale by U.S. Geological Survey, Information Services, Box 25286, Federal Center, Denver, CO 80225, 1-888-ASK-USGS Digital files available at https://doi.org/10.3133/sim3376 Suggested citation: Stone, P., Miller, D.M, Stevens, C.H., Rosario, J., Vazquez, J.A., Wan, E., Priest, S.S., and Valin, Z.C., 2017, Geologic map of the Providence Mountains in parts of the Fountain Peak and adjacent 7.5' quadrangles, San Bernardino County, California: U.S. Geological Survey Scientific Investigations Map 3376, pamphlet 52 p., scale 1:24,000, https://doi.org/10.3133/sim3376. ISSN 2329-132X (online) https://doi.org/10.3133/sim3376 1U.S. Geological Survey; 2San Jose State University