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Page 6277, results 156901 - 156925

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Publication Extents

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Stratigraphic sections of the Phosphoria formation measured and sampled in 1951
Thomas McGiffin Cheney, J.A. Peterson, M.A. Warner, R.A. Smart, R.G. Waring, R.P. Sheldon
1952, Open-File Report 52-23
The first four of a series of reports giving detailed stratigraphic sections and analyses of samples of the Phosphoria formation in the western phosphate field as described and sampled by the U. S. Geological Survey will soon be published as Circulars 208 through 211. Because of the needs of industry...
A magnetic anomaly near Bear Lake, Houghton County, Michigan
James C. Wright
1952, Open-File Report 52-169
A large magnetic anomaly of unknown origin occurs about 1 1/2 miles east of Bear Lake, Houghton County, Michigan, in secs. 24 and 258 T. 56 N., R. 34 W. The occurrence is isolated in an area of very weakly magnetic rocks and has special geologic interest because it is...
Geology of the Alaska-Juneau lode system, Alaska
William Stephens Twenhofel
1952, Open-File Report 52-160
The Alaska-Juneau lode system for many years was one of the worlds leading gold-producing areas. Total production from the years 1893 to 1946 has amounted to about 94 million dollars, with principal values in contained gold but with some silver and lead values. The principal mine is the Alaska-Juneau mine,...
Preliminary report on the Passamaquoddy bedrock survey, July-August, 1951
William Ogden Smith, J. E. Upson
1952, Open-File Report 52-140
In order to understand the results of the Passamaquoddy bedrock survey and the details of the method of obtaining them, it is desirable to have, in outline, a general idea of the methods and their application. In this part of the report a general account of the operation will be...
Uranium-bearing deposits west of Clancey, Jefferson County, Montana
Wayne Arthur Roberts, Arthur J. Gude
1952, Open-File Report 52-129
Nine uranium deposits occur in a small area vest of Clancey,Jefferson County, Mont. These deposits are all in or near silicifiedfracture zones in quarts monsonite and related rocks of the Boulderbatholith. The deposits contain pockets of uranium minerals in cavities in brecciated silicified rock. The primary uranium mineral pitch-blende has...
Geology of the Dry Valley quadrangle, Idaho; a preliminary report
E. R. Cressman
1952, Open-File Report 52-31
The Dry Valley quadrangle is one of seven 71-minute quadrangles in southeastern Idaho being mapped by the U. S. Geological Survey as part of an investigation of the western phosphate field. This work was done on behalf of the Division of Raw Materials of the Atomic Energy Commission. Most of...
Marl deposits in the Wasilla area, Alaska
Robert M. Moxham, Richard A. Eckhart
1952, Open-File Report 52-104
Marl occurs in several localities in the Cook Inlet area in south-central Alaska. The most significant known deposits are found in the Wasilla area, about 30 miles north of the city of Anchorage.In this area marl has been deposited in three fresh water lakes--Wasilla Lake, Finger Lake and Lucile Lake....
The Permian phosphorite deposits of western United States
V.E. McKelvey, Roger Warren Swanson, Richard Porter Sheldon
1952, Open-File Report 53-166
The Permian marine phosphorite deposits of the western United States were laid down in the Phosphoria formation and its partial stratigraphic equivalents over an area of about 135,000 square miles in Montana, Idaho, Wyoming, Utah, and Nevada. The deposits in the eastern part of the field lie on the western...
Clay, near Nenana, Alaska
R.A. Eckhart
1952, Open-File Report 52-172
The clay deposit here described is located on the west side of the Alaska Railroad about 3.7 miles south of Nenana in N.E. 1/4 Sec. 3, T. 5 S., R. 8 W. (see figure 1). The surface of the deposit has a relief of less than 10 feet and is...
Heavy-mineral analysis of sedimentary rocks of northern Alaska
Robert Hamilton Morris
1952, Open-File Report 52-102
The Navy Oil Unit of the United States Geological Survey has been investigating the geology of Naval Petroleum Reserve No. 4, northern Alaska. As part of this program, heavy-mineral samples were prepared from cores of the test wells and core holes and studied to determine stratigraphic correlations. Using the following...
Preliminary report on the Nelson and Radovan copper prospects, Nizina district, Alaska
C.J. Sainsbury
1952, Open-File Report 52-134
Renewed copper exploration by Alaska Copper Mines, Incorporated, at the Nelson and Radovan prospects, Nizina district, Alaska, led the Geological Survey in 1951 to map in detail the Nelson fault block, and to re-examine the old workings. In addition, two new prospects were studied. The Nelson fault block is cut by...