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Interpretation of an aerial radiometric survey of the San Gorgonio Wilderness Area and vicinity, San Bernardino County, California

Miscellaneous Field Studies Map 1161-B

By:
and

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Abstract

The aerial radiometric data for the San Gorgonio Wilderness Area show slight correlation with mapped geology and contain no information of economic significance. Precambrian and modified Precambrian crystalline rocks have more eTh compared to Mesozoic plutonic rocks and one rock unit mapped as a pluton has slightly more K. These rocks have essentially uniform ratios of eU/eTh and eU/K despite their different origins. The ratios and also show that part of the granodiorite of Manzanita Springs could be somewhat deficient in eTh and K. It is concluded that the mapped radioelement distributions are within reasonable limits for the rock types involved, and there is no immediate evidence on any anomalous concentrations of radioactive minerals within the Wilderness Area. 

Study Area

Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Interpretation of an aerial radiometric survey of the San Gorgonio Wilderness Area and vicinity, San Bernardino County, California
Series title:
Miscellaneous Field Studies Map
Series number:
1161
Chapter:
B
ISBN:
0607806494
Year Published:
1981
Language:
English
Publisher:
U.S. Gelogical Survey
Publisher location:
Reston, VA
Description:
43.40 x 35.02 in and 43.95 x 33.51 in
Country:
United States
State:
California
County:
Bernardino
Scale:
62500
Online Only (Y/N):
N
Additional Online Files (Y/N):
N