Regional mapping of hydrothermally altered igneous rocks along the Urumieh-Dokhtar, Chagai, and Alborz Belts of western Asia using Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) data and Interactive Data Language (IDL) logical operators: a tool for porphyry copper exploration and assessment
<p>Regional maps of phyllic and argillic hydrothermal alteration were compiled using Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER)…
Public-domain full text preserved in the Mountain Man Mining Library. Original source: pubs.usgs.gov.
! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! 58° E 58° E 56° E 56° E 54° E 54° E 52° E 32° N 32° N 30° N 30° N 28° N URUMIEH-DOKHTAR VOLCANIC BELT this plate plate 8 plate 10 plate 7 Index map showing location of this ASTER hydrothermal alteration map area (red outline), bordering map areas (black outlines), and volcanic belt boundaries (white outlines). 66° E 60° E 60° E 54° E 54° E 48° E 48° E 36° N 36° N 30° N 30° N 2 ½° MAGNETIC NORTH TRUE NORTH APPROXIMATE MEAN DECLINATION, 2014 50 KILOMETERS 50 MILES NATIONAL GEODETIC VERTICAL DATUM OF 1984 RATIO SCALE 1: 660,000 U.S. Department of the Interior U.S. Geological Survey Plate 9 of 10 Scientific Investigations Report 2010–5090–O ISSN 2328-0328 (online) ://dx.doi.org/10.3133/sir20105090O Any use of trade, product, or firm 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 ://pubs.usgs.gov/sir/2010/5090/o/ Suggested citation: Mars, J.C., 2014, Map of potential porphyry copper sites and ASTER hydrothermal alteration in the south-central Urumieh-Dokhtar volcanic belt, south-central Iran, plate 9 in Mars, J.C., 2014, Regional mapping of hydrothermally altered igneous rocks along the Urumieh-Dokhtar, Chagai, and Alborz Belts of western Asia using Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) data and Interactive Data Language (IDL) logical operators—A tool for porphyry copper exploration and assessment: U.S. Geological Survey Scientific Investigations Report 2010–5090–O, 36 p., 10 plates, and spatial data, available at ://dx.doi.org/10.3133/sir20105090O. Base is Landsat Thematic Mapper, band 7 grayscale image (://landsat.usgs.gov) Universal Transverse Mercator projection By John C. Mars Map of Potential Porphyry Copper Sites and ASTER Hydrothermal Alteration in the South-Central Urumieh-Dokhtar Volcanic Belt, South-Central Iran Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) hydrothermal alteration data was used to map alteration interpreted as potential porphyry copper sites. See appendix B table (available online only at ://pubs.usgs.gov/sir/2010/5090/o/) for physical characteristics and locations of potential porphyry copper sites, listed by site number. EXPLANATION [NOTE FOR PLOT USERS: Small, isolated data areas may be difficult to see on plots; see files for detail (://pubs.usgs.gov/sir/2010/5090/o/)] Alteration units, mapped using ASTER data Phyllic-altered rocks Argillic-altered rocks Volcanic belt boundary Potential porphyry copper site !