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Page 6895, results 172351 - 172375

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Publication Extents

Not all publications have extents, not all extents are completely accurate
The application, technique, and theory of Gish-Rooney instruments, methods, and interpretation in electrical resistivity measurements
H. Cecil Spicer
1957, Open-File Report 58-99
The foundations of electrical prospecting were laid by Fox (1830) and Barus (1882). The former discovered that electrical currents and potentials were developed by certain ore deposits in Cornwall, England. Fox made measurements of these potentials and determined the resistivities of the minerals and surrounding rocks also. The latter, invented...
River channel patterns: Braided, meandering, and straight
Luna Bergere Leopold, M. Gordon Wolman
1957, Professional Paper 282-B
Channel pattern is used to describe the plan view of a reach of river as seen from an airplane, and includes meandering, braiding, or relatively straight channels.Natural channels characteristically exhibit alternating pools or deep reaches and riffles or shallow reaches, regardless of the type of pattern. The length of the...
Stromatolites of the Belt Series in Glacier National Park and Vicinity, Montana
Richard Rezak
1957, Professional Paper 294-D
Eight zones of Precambrian stromatolites that are useful for local correlation are recognized in the Belt series of the Glacier National Park region, Montana. The zones vary in composition, thickness, and areal extent. Some are widespread and extend into neighboring regions, and others occur only in small areas. Their names...
River flood plains: Some observations on their formation
M. Gordon Wolman, Luna Bergere Leopold
1957, Professional Paper 282-C
On many small rivers and most great rivers, the flood plain consists of channel and overbank deposits. The proportion of the latter is generally very small.Frequency studies indicate that the flood plains of many streams of different sizes flowing in diverse physiographic and climatic regions are subject to flooding about...
Preliminary geologic map of the Pumpkin Buttes area, Campbell and Johnson Counties, Wyoming, showing location of uranium occurrences
W. N. Sharp, A. M. White
1957, Miscellaneous Field Studies Map 98
The Pumpkin Buttes area comprises about 450 square miles in Campbell and Johnson Counties that includes several prominent buttes known as Pumpkin Buttes.  The area is near the center of the Powder River Basin, a large physiographic unit of prairie and sculptured terrain that occupies approximately 12, 000 square miles...
A gamma-ray absorption method for the determination of uranium in ores
Alfred F. Hoyte
1957, Open-File Report 57-55
Current radioactivity methods used for the determination of uranium in ores are based on the assumption that secular equilibrium exists between the daughter products. Eichholz has developed a method which is claimed to be independent of the degree of equilibrium, but it has been found to be inadequate when used...