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Interpretation of an aerial radiometric survey of the San Gorgonio Wilderness Area and vicinity, San Bernardino County, California
James A. Pitkin, Joseph S. Duval
1981, Miscellaneous Field Studies Map 1161-B
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...
Flood of May 5 and 6, 1981, Mobile, Alabama
C. O. Ming, G. H. Nelson
1981, Open-File Report 81-1054
Heavy and intense rainfall in the late evening and early morning hours, May 5 and 6, 1981, caused widespread flooding along streams and low-lying areas in the port city of Mobile, Ala. More than 12 inches of rain fell between 6 p.m. May 5, and 3 a.m. May 6. Damage...
Effects of residential wastewater treatment systems on ground-water quality in west-central Jefferson County, Colorado
Dennis C. Hall, D. E. Hillier, Edward Nickum, W.G. Dorrance
1981, Open-File Report 81-73
The use of residential wastewater-treatment systems in Evergreen Meadows, Marshdale, and Herzman Mesa, Colo., has degraded ground-water quality to some extent in each community. Age of community; average lot size; slope of land surface; composition, permeability, and thickness of surficial material; density, size , and orientation of fractures; maintenance of...
Map showing the oxygen isotope composition of granitoid rocks of the Basin-Range province
Donald E. Lee, Irving Friedman, J.D. Gleason
1981, Miscellaneous Field Studies Map 1305
This map presents oxygen suite of granitoid rocks from Province of Nevada, Utah, isotope data for a the Basin and Range California, and Arizona. Two random samples were collected each of two randomly selected plutons within 1° x 1° area. For this study, only the m.nnbered sample was analyzed except...