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500 feet EXPLANATION Analyses by E. L. Approximate outline Ariz Arizona ash contains aspen trees background and threshold bedrock Bedrock outcrop Quaternary bedrock samples biogeochemical bismuth blue paloverde catclaw acacia Clear Creek County colluvium Contour interval 500 copper anomaly correlation creosotebush distributions of copper E. L. Mosier Empire district enriched Equisetum Figure fluorine geochemical Geochemical exploration gravels and colluvium Heavy lines heavy stipple interval 500 feet ironwood K. C. Watts kaolinite lead leaves and stems Light stipple lines are veins lithium manganese mesquite metal content Mineral Butte molybdenum Mosier and K. C. mull ash nonriparian plants outline of Vekol percent Pinal County pine and aspen plant parts anomalous plant species porphyry copper deposit Precambrian quartz monzonite Quaternary and Tertiary residual soil rock and soil samples collected selected elements smectites soil samples stream channels tellurium threshold values tungsten U.S. Geol U.S. Geological Survey Vekol Mountains zinc anomalies
Page C-8 - WW, and McCarthy, JH, Jr., 1964, An instrumental technique for the determination of submicrogram concentrations of mercury in soils, rocks, and gas, in Geological Survey research 1964: US Geol.
Page B-18 - J. 1967. Trace elements in trees and shrubs growing on different rocks in Finland. — In: Geochemical Prospecting in Fennoscandia.
Page E-8 - An evaluation of some geochemical sampling in the search for concealed "porphyry" copper-molybdenum deposits on pediments in Southern Arizona, USA, in Geochemical Exploration (Boyle, tech.
Page E-62 - Igneous rock types and host rocks associated with porphyry copper deposits, p. 35-40 in Titley, SR, and Hicks, CL, eds., Geology of the porphyry copper deposits, southwestern North America: Tucson, Ariz., Arizona Univ.
Page E-8 - Huff, LC (1970). A geochemical study of alluvium-covered copper deposits in Pima County, Arizona. US Geol. Survey Bull. 1312-C, 31 pp.
Page E-62 - Huff, LC, 1970, A geochemical study of alluvium-covered copper deposits in Pima County, Arizona, with a section on Analytical methods, by AP Marranzino and H. M.
Page E-8 - Harald, 1975, Geologic map and sections of the Happy Valley quadrangle, Cochise County, Arizona: US Geol. Survey Map 1-832.
Page A-21 - Robinson, WO, and Edgington, Glen, 1942: Boron content of hickory and some other trees, Soil Science 53: 309-312. ,,14. Robinson, WO, and Edgington, Glen, 1945: Minor elements in plants and some accumulator plants, Soil Science 60: 15-28. 15. Singewald, JT, Jr., 1928: The chrome industry in Maryland, Md. Geol. Survey 12: 158191, illus. 16. Vogt, Thorolf, Braadlie, D., and Bergh, H., 1943: Geokjemisk og geobotanisk malmleting. IX. Bestemmelse Cu, Zn, Pb, Mn og Fe, i planter fra R0rosfeltet...
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