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Oxygen isotope, aeromagnetic, and gravity anomalies associated with hydrothermally altered zones in the Yankee Fork mining district, Custer County, Idaho.

Economic Geology

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Abstract

Anomalous geochemical and geophysical properties correlate spatially with epithermal Ag-Au deposits in altered volcanic rocks. Areas of low 18O, low magnetic susceptibilities, low remanent magnetizations and relatively high rock densities are much larger than the zones of obvious (not shown) hydrothermal alteration. Low aeromagnetic intensities and positive Bouguer anomalies are also associated with the altered rock, as which has delta 18O <6per mille. The altering and mineralizing fluids were Tertiary meteoric waters.-G.J.N.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Oxygen isotope, aeromagnetic, and gravity anomalies associated with hydrothermally altered zones in the Yankee Fork mining district, Custer County, Idaho.
Series title:
Economic Geology
Volume
80
Issue:
5
Year Published:
1985
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Economic Geology
First page:
1277
Last page:
1296