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184617 results.

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Page 7247, results 181151 - 181175

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Publication Extents

Not all publications have extents, not all extents are completely accurate
The flora of the Denver and associated formations of Colorado
Frank Hall Knowlton
Edward Wilber Berry, editor(s)
1930, Professional Paper 155
In the introduction to my report on the Laramie flora of the Denver Basin I stated that that was the first of what was proposed to be a series of papers dealing with the stratigraphy and paleobotany of certain Upper Cretaceous and lower Tertiary plant-bearing formtions of the Rocky Mountain...
Coal as a recorder of incipient rock metamorphismy
M. R. Campbell
1930, Economic Geology (25) 675-696
If the evidence presented in the body of this paper is accepted, there seems to be no question that eight stages in the metamorph-ism of coal can be recognized and explained by the processes that have been active in the earth coincident with the development of plant life on the land; and...
Shorter contributions to general geology, 1929
Water Resources Division, U.S. Geological Survey
1930, Professional Paper 158
Thin beds that consist almost wholly of euhedral analcite crystals occur at five or more horizons in the upper half of the Green River formation of Utah and Colorado, a series of Eocene lake beds that contain large deposits of oil shale. Most of these beds contain also minute crystals...
Fiftieth annual report of the Director of the Geological Survey
George Otis Smith
1929, Annual Report 50
The appropriations made directly for the work of the Geological Survey for the fiscal year 1929 included 14 items, amounting to $2,135,609. In addition $120,000 was appropriated for printing and binding for the Geological Survey, and an allotment of $14,765 for miscellaneous supplies was made from appropriations for the Interior...