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Page 1281, results 32001 - 32025

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Mineral resources of the southern half of Zone III Santander, Norte de Santander and Boyaca, Colombia
Dwight Edward Ward, Richard Goldsmith, Bruna B. Cruz, Jaime Restrepo, A. Hernan
1970, Open-File Report 70-359
The areas covered by this report lies in the eastern Cordillera of the Colombian Andes in the region around Bucaramanga. This part of the eastern Cordillera consists of a structurally complex core of metamorphic and igneous rocks of Precambrian to Mesozoic age, flanked to east and west by faulted and...
Flood profile study, Hoosier Creek, Linn County, Iowa
Harlan H. Schwob
1970, Open-File Report 70-294
The purpose of this report is to present the results of a flood-profile study made for Hoosier Creek and its tributary, South Hoosier Creek. The reaches studied extend from near the south Linn County line upstream to U.S. Highway 218 on Hoosier Creek, and from the mouth to U.S. Highway...
Geologic log and chemical data, diamond drill hole 1, Samrah, Kingdom of Saudi Arabia
P. K. Theobald Jr., Charles E. Thompson, Henry D. Horn
1970, Open-File Report 70-324
Diamond drill hole number 1 at the Samrah ancient mine, Kingdom of Saudi Arabia penetrated a series of mineralized fractures. Lead, zinc, and silver are the principal ore metals and galena and sphalerito are the ore minerals identified to date. Throughout the core there is a somewhat better correlation of...
Results of geochemical sampling in the western Clearwater Mountains, Alaska
Thomas E. Smith
1970, Open-File Report 70-310
Two centers of gold mineralization in the Clearwater Mountains have been identified during a recent geochemical sampling program in the Healy A-1, B-1 quadrangles, Alaska. Both the Timberline Creek center and the Black Creek center are located near the same E-W trending fault system.Sites of structural weakness along the zone...
Flood profile study, Morgan Creek, Linn County, Iowa
Harlan H. Schwob
1970, Open-File Report 70-295
The purpose of this report is to present the results of a study made for a 35,000-foot reach of Morgan Creek. The report shows profiles computed for a large flood under existing conditions and for a smaller flood for two assumed conditions of encroachment. Flood-plain management can benefit from this...
Seismic-reflection records from a survey at the Rocky Mountain Arsenal near Denver, Colorado
Robert E. Mattick, Donald B. Hoover
1970, Open-File Report 70-217
During July 1966, after competitive bidding, a contract was awarded by the U.S. Geological Survey to GeoData Corporation and Geo Prospectors, Inc., both of Tulsa, Oklahoma, for 18 miles of continuous seismic-reflection profiling in the vicinity of a deep injection disposal well (IDW) at the Rocky Mountain Arsenal near Denver,...
Geologic map of the Fra Mauro region of the Moon-- Apollo 13
Richard E. Eggleton, Terry W. Offield
1970, Open-File Report 70-245
The accompanying map shows the geology of the Fra Mauro site- the proposed landing site for the Apollo 13 mission to the Moon. This site lies about 80 km north of the ancient crater Fra Mauro, in a north-south belt of predominantly hummocky uplands terrain geologically distinct from the mare...
Geology and mineral evaluation of the Wadi Bidah district, southern Hijaz quadrangle, Kingdom of Saudi Arabia
Robert L. Earhart, Mustafa M. Mawad
1970, Open-File Report 70-116
The Wadi Bidah district in southwest Saudi Arabia contains several ancient mines and mineral-prospects. The Precambian rocks of the district are steeply dipping and highly folded and faulted. They are divided into three major units: (1) older metavolcanic rocks, (2) metasedimentary rocks, and (3) younger metavolcanic rocks. Massive sulfide-type deposits...