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Page 1287, results 32151 - 32175

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Qualitative analysis of airborne magnetometer data: The Arabian Shield, Kingdom of Saudi Arabia
Donald H. Hase
1970, Open-File Report 70-155
A qualitative analysis and interpretation of magnetic data obtained from airborne magnetometer and scintillometer surveys of the Precambrian Arabian Shield, Kingdom of Saudi Arabia, show that some rock units and geologic features exhibit characteristic magnetic expressions and anomalies. Circular to elliptical anomalies are attributed to younger intrusive or less commonly...
Morphology, sedimentation, and seismic characteristics of an arctic beach, Nome, Alaska - with economic significances
H. Gary Greene
1970, Open-File Report 70-142
Arctic beaches exhibit characteristics that do not occur on beaches in more temperate zones. In the summer of 1967 morphological, sedimentological, and seismic refraction studies were made on an arctic beach near Nome, Alaska, in order to better define these distinguishing characteristics.Several distinct microrelief structures are developed during ice break-up...
Flood of August 1969 in Virginia
J.D. Camp, E.M. Miller
1970, Open-File Report 70-51
Hurricane Camille became a tropical depression and soaked central Virginia with up to 28 inches of rain during the night of August 19th and morning of the 20th. The rains, flash floods, and rain-induced landslides accompanying the storm's passage have been called the worst natural disaster ever to strike Virginia.Discharge...
Geologic map of the Arvada quadrangle, Colorado
Robert M. Lindvall
1970, Open-File Report 70-198
Many of the engineering-geologic problems in the Arvada quadrangle are related to the unconsolidated surficial deposits, which mantle the bedrock to depths of as much as 40 or 50 feet. In this report most of the emphasis is placed on the map distribution of these materials and on a description...
Petroleum possibilities of the Yukon-Koyukuk Province, Alaska
William Wallace Patton Jr.
1970, Open-File Report 70-257
The recent discovery of major oil resources on Alaska's North Slope has rekindled interest in the petroleum possibilities of the Yukon-Koyukuk province, a vast tract of Cretaceous rocks stretching along the west coast of Alaska from the Brooks Range to the Yukon delta. Attention was first focused on this region...
LASA anomalies and their relations to crust and upper-mantle structure
H. M. Iyer, A.R. Jackson, J. H. Healy, T.E. Landers
1970, Open-File Report 70-170
Body-wave data from nine teleseisms recorded at the Large Aperture Seismic Array (LASA), Montana, have been analyzed. The events were at different azimuths and distances from LASA. Apparent-velocity measurements using arrival-time data at the subarrays differed by about 30 percent for events in the northwest and southeast directions.Apparent velocities were...
Analyses of stream-sediment samples from western St. Lawrence Island, Alaska
William Wallace Patton Jr., Bela Csejtey Jr.
1970, Open-File Report 70-258
Analytical data for 207 stream-sediment samples from western St. Lawrence Island are presented in this report, together with a statistical treatment of the data. The samples were collected in 1968 and 1969 as part of the Heavy Metals Program of the U.S. Geological Survey.This report is intended to supplement Geological...