Ernest Dobrovolny
1955, Open-File Report 55-42
Search Results
164613 results.
Alternate formats: RIS file of the first 3000 search results | Download all results as CSV | TSV | Excel | RSS feed based on this search | JSON version of this page of results
Page 6185, results 154601 - 154625
Publication Extents
Not all publications have extents, not all extents are completely accurateJohn Crawford Dunlap
1955, Open-File Report 55-43
William Wallace Patton Jr.
1955, Open-File Report 55-132
Deposits of low and medium grade phosphate rock were found recently at seven localities on the Arctic slope of Alaska. They were reported by field parties of the U.S. Geological Survey during the mapping of Naval Petroleum Reserve No. 4 and adjacent areas. The deposits are sedimentary in origin and...
Sam H. Patterson
1955, Open-File Report 55-131
Extensive deposits of bentonite are present in the Cretaceous sedimentary rock strata cropping out on the northern flank of the Black Hills. These deposits have been the subject of a study by the U.S. Geological Survey as part of the program of the Department of the Interior for appraisal of...
Richard G. Ray
1955, Open-File Report 55-144
In the past few years increasing use has been made of aerial photographs for geologic interpretation and mapping within the U.S. Geological Survey. As a specialized technique in interpretation and mapping, however, photogeologic procedures were extensively used (1947-1953) in the Survey's geologic mapping of Naval Petroleum Reserve No. 4 in...
Jack Allison Redden
1955, Open-File Report 55-145
The Fournile pegmatite area covers 32 sq. mi. in the western part of the Custer pegmatite mining district, Custer County, South Dakota. This area has been one of the major sources of sheet mica in the United States, especially between 1906 and 1911, and it has been a significant source...
C.L. Sainsbury
1955, Open-File Report 55-159
A pegmatite deposit about 600 feet in diameter crops on a high bluff less than one-half mile east of a small unnamed cove between Redfish and Byron Bays, on the west coast of Baranof Island, southeastern Alaska.The deposit which comprises several pegmatite bodies consists of quartz, albite-oligoclase, microcline and mica,...
C.L. Sainsbury
1955, Open-File Report 55-158
Preliminary geochemical prospecting by the Geological Survey was carried out in 1952 in muskeg-covered ground at Caamano Point, Cleveland Peninsula, Alaska, in an effort to delimit areas of stibnite concentrations. It was conducted to aid, if possible, a prospecting project of the Defense Minerals Exploration. Samples were collected from soil...
Philip Forsyth Fix
1955, Open-File Report 55-45
Oat Hill quicksilver mine, located in the Mayacmas district of northern California, and credited with having produced more than 160,000 flasks of quicksilver, was sampled cooperatively by the Buray of Mines and Geological Survey during 1944. 28 diamond drill holes totaling 8,120 feet were drilled by the Bureau of Mines...
Gerald Martin Richmond
1955, Open-File Report 55-150
John Charles Miller
1955, Open-File Report 55-115
Dam sites were examined at the outlets of Scenery Lake, Swan Lake, and Ruth Lake which are located on Scenery Creek, Cascade Creek, and Delta Creek, respectively. The Scenery Lake dam site is partly in quartz diorite and partly in hornblende plagioclase gneiss. The Swan Lake and Ruth Lake dam...
Don John Miller
1955, Open-File Report 55-114
This report gives the results of geologic investigations in the Yakataga district on the south coast of Alaska, including detailed geologic mapping in the southeastern part of the Robinson Mountains, and reconnaissance study of the stratigraphy and structure of adjoining areas. The geologic map that accompanies this report covers an...
James Franklin McAllister
1955, Open-File Report 55-101
Darwin L. Rossman
1955, Open-File Report 55-154
The area mapped includes most of northwestern Chichagof Island. The work, started in 1946, is a continuation of the geologic mapping done in the adjoining Chichagof mining district by Reed and Coats. The gold-bearing zone recognized by these writers continues through the area mapped by the writer to the northern...
Marjorie Hooker
1955, Open-File Report 55-70
Marjorie Hooker
1955, Open-File Report 55-69
J. D. Love
1955, Open-File Report 55-98
Uranium minerals have been discovered in the Wind River formation of early Eocene age, strata of middle and late Eocene age, and the Thermopolis shale of early Cretaceous age in the Gas Hills area of central Wyoming. The localities of uranium mineralization were found independently by prospectors and by geologists...
Gerald Francis Loughlin
1955, Open-File Report 55-97
Arthur Johnson
1955, Open-File Report 55-74
Grant, Ptarmigan, Cooper, and Crescent Lakes, located in the Kenai Mountains in the upper portion of the Kenai River Basin, approximately 25 miles to the north of Seward, present favorable opportunities for the development of waterpower. Grant and Ptarmigan Lakes can be made readily accessible by roads from the Seward-Anchorage...
Louis W. Currier
1955, Open-File Report 55-33
Deposits of sand and gravel are widespread in the New England-New York regions and constitute one of its principal mineral resources. Most of the pits are operated intermittently to supply local needs. Because of the great number and variety of known deposits, and because they have been worked at countless...
W. B. Langbein
1955, Open-File Report 55-91
A common problem in hydrology is to fit a smooth curve to cyclic or periodic data, either to define the most probable values of the data or to test some principle that one wishes to demonstrate. This study treats of those problems where the length or period of the cycle...
Joseph H. Hartshorn
1955, Open-File Report 55-61
Montis Ruhl Klepper
1955, Open-File Report 55-84
Reuben Kachadoorian, Troy Lewis Pewe
1955, Open-File Report 55-78
William Richard Keefer
1955, Open-File Report 55-81
The Du Noir area includes about 250 square miles in the northwestern part of the Wind River Basin, Fremont County, Wyoming. It is bounded on the south by the Wind River and Warm Spring Creek, which flow along the northeast flank of the Wind River Mountains, and on the north...