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Page 5949, results 148701 - 148725

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Aeromagnetic map of parts of Marquette, Dickinson, Baraga, Alger, and Schoolcraft Counties, Michigan, and its geologic interpretation
J. E. Case, J. E. Gair
1965, Geophysical Investigations Map 467
The U. S. Geological Survey, in cooperation with the Geological Survey Division of the Michigan Department of Conservation, is conducting a comprehensive restudy of the iron-bearing districts of Michigan. The use of aeromagnetic data is one of the fastest and most reliable methods for outlining the areal distribution of magnetic...
Cenozoic climatic change and its cause
Warren Bell Hamilton
1965, Open-File Report 65-67
The widely accepted paleoclimatic concepts that the earth's climate has cooled gradually throughout Cenozoic times, and that the tropics have become narrower during the era, are invalidated by a global analysis of Cenozoic climatic changes. ...
Plant and miscellaneous microfossils of the Pierre Shale
Estella B. Leopold, Bernadine D. Tschudy
1965, Open-File Report 65-97
This preliminary report summarizes part of a Survey program to study, in detail, the stratigraphy and paleontology of a nearly complete sequence of Pierre Shale near Redbird, Wyoming. The physical stratigraphy and correlations are being analyzed by James Gill and W. A. Cobban. Various groups of invertebrate fossils are under...