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Publication Extents

Not all publications have extents, not all extents are completely accurate
The geology, mineralogy and paragenesis of the Castrovirreyna lead-zinc-silver deposits, Peru
Richard Wheatley Lewis Jr.
1964, Open-File Report 64-103
The Castrovirreyna mining district lies in the Andean Cordillera of South Central Peru, and has been worked sporadically since its discovery in 1591. Supergene silver ores were first mined. Currently the district produces about 20,000 tons of lead-zinc ore and 5000 tons of silver ore annually. The district is underlain by...
Subsurface geology of the upper Cretaceous Kirtland and Fruitland formations of the San Juan Basin, New Mexico and Colorado
James E. Fassett
1964, Open-File Report 64-53
The San Juan Basin is an asymmetrical structural basin in northwestern New Mexico and southwestern Colorado. The basin contains sedimentary rocks ranging from Cambrian through Recent in age and attaining a maximum thickness between 14,000 and 15,000 feet. The Upper Cretaceous sedimentary rocks exceed 8,000 feet in thickness and can...
Copper determinations on samples of alluvium and caliche from the rocky Range, Beaver County, Utah
Ralph Leroy Erickson, Albert Pasquale Marranzino
1964, Open-File Report 64-49
A study of the distribution of copper in transported alluvium on a pediment of the Rocky Range, Beaver County, Utah, undertaken to determine whether known copper deposits in bedrock concealed by alluvium could be detected by geochemical methods, was reported in Geological Survey Research 1960 ( Erickson, R.L., and Marrenzino,...
Geology applied to study of coal mine bumps and mining methods at Sunnyside, Utah
Frank W. Osterwald, C. Richard Dunrud
1964, Open-File Report 64-122
Coal mine bumps are a serious hazard to life and property in the mines of east-central Utah. Research into geologic factors associated with these bumps indicates that the bumps are spatially and genetically related to structural and stratigraphic features. Some bumps are directly related to stress accumulation along faults, either...
Foraminifera from the Northern Olympic Peninsula, Washington
Weldon W. Rau
1964, Professional Paper 374-G
Foraminifera from a Tertiary sequence that crops out on the northern part of the Olympic Peninsula, Wash., show stratigraphic and ecologic significance. Forty-two species that are important both to correlations and to ecologic interpretations are illustrated and systematically discussed. The Foraminifera indicate that some of the rocks may be as...
Geology and mineral deposits of the Osgood Mountains quadrangle, Humboldt County, Nevada
Preston Enslow Hotz, Charles Ronald Willden
1964, Professional Paper 431
The Osgood Mountains quadrangle is in north-central Nevada northeast of Winnemucca, the principal town in the region. The quadrangle includes two north-northeast-trending mountain ranges, the Osgood Mountains on the east and the Hot Springs Range on the west, which are separated by a narrow valley and are bounded on the east...
Geology of the Guadalupe Mountains, New Mexico
Philip Thayer Hayes
1964, Professional Paper 446
After the discovery of oil in Permian rocks in Winkler County, Tex., in 1920, petroleum exploration intensified in adjacent parts of western Texas and southeastern New Mexico. Almost immediately unusual stratigraphic complexities were discovered in the Permian rocks. Thus began a long period of stratigraphic investigations, chiefly reconnaissance studies, of...