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Page 6373, results 159301 - 159325

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Summary of microfossil investigations, April 1948 to April 1949 with special reference to the south Barrow and Simpson areas
Helen N. Loeblich
1949, Geological Investigations, Naval Petroleum Reserve No. 4, Alaska 26
This report summarizes the results of microfossil investigations for he past year. It includes the microfossil data from the two South Barrow Test Wells and studies of samples from outcrop material an from seismograph shot holes. In addition, new information bearing on the special study of microfossils from the Cape...
Heavy mineral zonation of Cretaceous and Tertiary rocks of the central area of northern Alaska
Ernest H. Lathram
1949, Geological Investigations, Naval Petroleum Reserve No. 4, Alaska 29
This report presents the general conclusions pertaining to the correlation of Cretaceous and Tertiary rocks in test wells and outcrops in the central area of northern Alaska (fig. 1) by means of heavy minerals. Approximately 1.000 drill and outcrop samples have been studied. In order to relate the materiel here...
Study of radioactive equilibrium in Carnotite ores of the Colorado Plateau
L. R. Stieff, M.N. Girhard, T. W. Stern
1949, Trace Elements Investigations 106
The purpose of this study was to determine the age of Colorado Plateau carnotite. In addition to quantitative analyses of uranium and lead, the radium-uranium equilibrium of each sample was studied. Of the 12 samples studied, 10 are deficient in radium. If a minimum age of 130 million years is...
Submarine geology and topography in the Northern Marshalls
K.O. Emery, J. I. Tracey Jr., H. S. Ladd
1949, Eos, Transactions, American Geophysical Union (30) 55-58
The atomic bomb tests at Bikini in 1946 provided an opportunity to study the characteristics of atolls using modern surveying techniques. The work has shown that many of the important features, both above and below sea level, are definitely related to the direction of the prevailing winds, waves, and currents....
Calculated gravity anomaly produced by possible fault under line 27-48
Stephen W. Dana
1949, Geological Investigations, Naval Petroleum Reserve No. 4, Alaska 4
The seismograph data from Line 27-48 of Party 47 indicates the possibility of a high angle fault win a displacement of roughly 1,000 feet under South Barrow Test Well No. 2. This fault vas discussed in E. Wiancko's report for United Geophysical Company entitled "Report of Reflection Seismograph Survey in...
Distribution of uranium in the Florida phosphate field
James B. Cathcart
1949, Trace Elements Investigations 85
Land-pebble phosphate, hard-rock phosphate, and river-pebble phosphate are the three types of phosphatic rock found in Florida. This report is concerned primarily with the land-pebble deposits, the only type which contains a significant amount of uranium. The most productive part of the land-pebble district is in Polk and Hillsborough Counties, in...
Progress on detection of radioactivity by airborne equipment
Frank W. Stead
1949, Trace Elements Investigations 83
Coincidence and anti-coincidence counting rate meters and also an air conductivity meter have been installed in a transport plane to measure gamma radiation from ground sources. Materials containing 0.01 percent uranium can be detected at 500 feet and at an airspeed of 150 miles per hour....
The Carbon Creek and Awuna anticlines
William A. Fischer
1949, Geological Investigations, Naval Petroleum Reserve No. 4, Alaska 10
At the interim meting of the Technical Committee in Fairbanks, Alaska, in September 1949, the Navy Oil Unit was requested to make photo-geologic analysis of the Driftwood, Awuna, and Carbon Creek anticlines before the November meeting. A report on the photogeology of the Driftwood anticline, based on available air photos,...