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Geologic History of the Yosemite Valley
The principal result of the investigations upon which this report is based is the determination within narrow limits of the preglacial depth of the Yosemite Valley and of other facts concerning its preglacial development which permit fairly definite estimates of the proportionate shares of work performed by stream and by glacier. The investigations comprise a detailed survey of the glacial and geomorphologic features of the Yosemite region and an equally intensive study of its rock formations, supplemented by reconnaissance work of both kinds in adjoining parts of the Sierra Nevada.
Date:
1930
Creator:
Matthes, François E.
System:
The UNT Digital Library
Lithologic Studies of Fine-Grained Upper Cretaceous Sedimentary Rocks of the Black Hills Region
More than nine-tenths of the Upper Cretaceous rocks in northeastern Wyoming are fine-grained shales, mudstones, and calcareous marls. A comparative study of the mineralogy, chemical and mechanical composition, density and porosity, fissility, and lamination of samples of these rocks discloses several relations that throw light on the geologic history and structural deformation of the region, and perhaps on its oil and gas possibilities.
Date:
1930
Creator:
Rubey, William Walden
System:
The UNT Digital Library
The Kaiparowits Region: A Geographic and Geologic Reconnaissance of Part of Utah and Arizona
From introduction: The purposes of this exploration are to determine routes, to locate water holes, and to select areas where detailed geologic study could profitably be undertaken.
Date:
1931
Creator:
Gregory, Herbert E. & Moore, Raymond C.
System:
The UNT Digital Library
Shorter Contributions to General Geology, 1936
From abstract: This report describes four species of Ostreidae from the Upper Cretaceous of the Gulf region. The zones that the species characterize lie either in the upper part of the Austin chalk or in beds of upper Austin age.
Date:
1940
Creator:
Loughlin, G. F.
System:
The UNT Digital Library
Geology and Biology of North Atlantic Deep-Sea Cores Between Newfoundland and Ireland
Summary: In May and June 1936 Dr. C. S. Piggot of the Geophysical Laboratory, Carnegie Institution of Washington, took a series of 11 deep-sea cores in the North Atlantic Ocean between the Newfoundland banks and the banks off the Irish coast.
Date:
1942
Creator:
Bradley, Wilmot H.
System:
The UNT Digital Library
Geology of the southern Guadalupe Mountains, Texas
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.
System:
The UNT Digital Library