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Chromite and quicksilver deposits of the Del Puerto area, Stanislaus County, California

Description: From Introduction: "The present report is based on 10 weeks of field work from mid-November 1940 until late January 1941, and 4 days in May 1941. An area of 5 1/2 square miles in and about Del Puerto Canyon was mapped on a scale of 600 feet to 1 inch, and two small areas in the vicinity of the Adobe Canyon and Black Bart chromite mines were mapped on a scale of 200 feet to 1 inch."
Date: 1942
Creator: Hawkes, H. E., Jr.; Wells, Francis G. & Wheeler, D. P., Jr.

Geology of the southern Guadalupe Mountains, Texas

Description: From Abstract: "This report deals with an area of 425 square miles in the western part of Texas, immediately south of the New Mexico line. The report describes the geology of the area, that is, the nature of its rocks, tectonics, and surface features, and the evidence that they give as to the evolution of the area through geologic time. Incidental reference is made to the geology of surrounding regions in order to place the area in its environment."
Date: 1948
Creator: King, Philip B.

Superposition in the Interpretation of Two-Layer Earth-Resistivity Curves

Description: From abstract: A method is presented for the interpretation of data on electrical resistivity by the superposition of standard reference curves on those obtained from field observations. This method is applicable where bedrock whose average resistivity is essentially uniform is overlain by overburden whose average resistivity is also uniform but markedly distinct.
Date: 1941
Creator: Roman, Irwin

Structural Geology of the Hawthorne and Tonopah Quadrangles, Nevada

Description: From introduction: The object of this paper is to describe the salient features of Jurassic diastrophism in parts of the Tonopah and Hawthorne quadrangles in west-central Nevada. The problem is complicated by the lack of continuity of exposures, earlier folding of the older rocks, metamorphism caused by the later granitic in-trusions, and by superposed Tertiary and later normal faults.
Date: 1949
Creator: Ferguson, Henry G. & Muller, Siemon W.

Subsurface Geology and Oil and Gas Resources of Osage County, Oklahoma: Part 8. Parts of Township 20 North, Ranges 9 and 10 East, and Township 21 North, Ranges 8 and 9 East, and all of Township 21 North, Range 10 East

Description: This report describes the structural features, the character of the oil- and gas-producing beds, and the localities where additional oil and gas may he found in parts of Osage County, Oklahoma.
Date: 1941
Creator: Kirk, Charles Townsend; Dillard, W. R.; Leatherock, Otto & Jenkins, H. D.

Tertiary Deposits of the Eagle-Circle District, Alaska

Description: From introduction: The present report aims to supply additional information regarding the Tertiary deposits, which are the source of most of the gold placers now being worked in that part of the Eagle-Circle district lying south of the Yukon River. The work was conducted from base camps along the river, but the belt of Tertiary rocks is at places as much as 20 miles from the Yukon, so that it is not easily accessible from the river except in the vicinity of mining camps, where roads or trails have been constructed southward.
Date: 1942
Creator: Mertie, John Beaver, Jr.

Subsurface Geology and Oil and Gas Resources of Osage County, Oklahoma: Part 9. Townships 23 and 24 North Range 7 East

Description: From foreword: This report on the subsurface geology of Osage County, Okla., describes the structural features, the character of the oil- and gas-producing beds, and the localities where additional oil and gas may be found. It embodies a part of the results of a subsurface geologic investigation of the Osage Indian Reservation, which coincides in area with Osage County. The investigation was conducted by a field party of the Geological Survey of the United States Department of the Interior in 1934 to 1937 and involved the study of the records of about 17,000 wells that have been drilled in Osage County.
Date: 1941
Creator: Bass, N. Wood; Dillard, W. R.; Kennedy, L. E. & Goodrich, Harold Beach

Geology of the Gerstle River District, Alaska, with a Report on the Black Rapids Glacier

Description: From abstract: The area here described includes most of the north side of the Alaska Range between the Delta and Johnson Rivers, in one direction, and the axis of the Alaska Range and the Tanana River in the other. Besides the Delta River, its principal streams are Jarvis Creek, the Gerstle and Little Gerstle Rivers, and, at the extreme east, the Johnson River, all of which have glacial sources.
Date: 1942
Creator: Moffit, Fred H.

Geology of area between Green and Colorado rivers, Grand and San Juan counties, Utah

Description: From Abstract: "The area described in this report comprises about 900 square miles of arid land lying between the Green and Colorado Rivers south of the Denver & Rio Grande Western Railroad and southwest of the Salt Valley anticline. The rocks that crop out or that have been encountered in wells drilled in the are all sedimentary and range in age from Pennsylvania ti Upper Cretaceous. Mesizoic strata are especially well represented."
Date: 1940
Creator: McKnight, Edwin Thor

Adsorbent clays: their distribution, properties, production, and uses

Description: From Abstract: "This bulletin is a summary of present knowledge of the adsorbent or bleaching clays-their distribution, field and laboratory identification, physical and chemical properties, uses, quality, and value. Problems in the drying, treating with acids, and washing are discussed, and methods of testing and rating decolorizing efficiency are described."
Date: 1943
Creator: Nutting, P. G.

Stratigraphy, structure, and mineralization in the Beaver-Tarryall area, Park County, Colorado: a reconnaissance report

Description: From Introduction: "The recent large increase in gold production from the Alma district has greatly stimulated interest in territory immediately to the east, where many small gold-bearing veins have been discovered. Consequently, as a cooperative project of the United States Geological Survey and the State of Colorado, 7 weeks in 1938 were devoted to renaissance work to determine the origin of the placer gold and the possibilities for discovering valuable lode deposits either near the surface or at depth."
Date: 1942
Creator: Singewald, Quentin D.