Search USGS⌕ Search

Geology topics

M. E. Hinkle

Publications and source records attributed to M. E. Hinkle.

28 records · Page 2Linked to original sources
USGS1984

Gases and trace elements in soils at the North Silver Bell deposit, Pima County, Arizona

Soil samples were collected over the North Silver Bell porphyry copper deposit near Tucson, Arizona. Volatile elements and compounds in gases derived from the soils and metallic elements in the soils were analyzed in order: (1) to see which volatile constituents of the soils might be indicative of the ore body or the alteration zones; and (2) to distinguish the ore and alteration zones by comparison of trace elements in the soil. Plots of analytical data on trace elements in soils indicated a typical distribution pattern for metals around a porphyry copper deposit, with copper, molybdenum, and arsenic concentrations higher over the ore body, and zinc, lead, and silver concentrations higher over the alteration zones. Higher than average concentrations of helium, carbon disulfide, and sulfur dioxide adsorbed on soils were found over the ore body, whereas higher concentrations of carbon dioxide and carbonyl sulfide were found over the alteration zones.

Journal of Geochemical Exploration↗
USGS1982

Mineral resources potential map of the Pusch Ridge Wilderness Area, Pima County, Arizona

A mineral resource assessment of the Pusch Ridge Wilderness Area was conducted by the U.S. Geological Survey and U.S. Bureau of Mines. The area was evaluated for its mineral potential by analysis of geochemical samples by the U.S. Geological Survey and by examination of mines, prospects, and mineralized areas by the U.S. Bureau of Mines. The Pusch Ridge Wilderness Area has a low potential for minerals and little surficial indication of potential for oil, gas, or geothermal energy. Assignment of a low potential is based on consideration of geologic environments where mineral and other resources might be expected.

Arizona↗
USGS1978

Helium in soil gases of the Roosevelt Hot Springs Known Geothermal Resource Ares, Beaver County, Utah

Soil samples were collected in two parallel traverses across the Dome fault zone of the Roosevelt Hot Springs Known Geothermal Resource Area. The samples were sealed in air-tight aluminum cans, and the soil gas was allowed to equilibrate with the atmospheric air in the cans. Gas from the cans was analyzed by mass spectrometry. Samples collected over faults contained anomalously high concentrations of helium. Samples collected close to a geothermal well 884 m deep contained more helium than samples collected near another geothermal well 1370 m deep.

Utah↗