Publications
Publications from the staff of the Geology, Minerals, Energy, and Geophysics Science Center
Filter Total Items: 2354
Post-paleozoic radiometric ages and their relevance to fault movements, Northern Southeastern Alaska
Recently determined lead-alpha and potassium-argon ages from northern southeastern Alaska indicate major plutonic events in the Paleozoic, Mesozoic, and Tertiary; in contrast, previous studies suggested that only one complex Jurassic and Cretaceous event occurred. The ages presented in this paper indicate the following Mesozoic and Tertiary plutonic events: Middle or Late Jurassic (144–164 m.y.);
Authors
R. A. Loney, David A. Brew, Marvin A. Lanphere
Historic surface faulting in continental United States and adjacent parts of Mexico
This report summarizes geometric aspects of approximately 35 instances of historic faulting of the ground surface in the continental United States and adjacent parts of Mexico. This information is of immediate importance in the selection and evaluation of sites for vital structures such as nuclear power plants. The data are presented in a table and graphs which show the quantitative relations betw
Authors
M. G. Bonilla
Geological Survey research 1967
No abstract available.
By
Water Resources Mission Area, Energy and Minerals Mission Area, Energy Resources Program, Mineral Resources Program, National Laboratories Program, Science and Decisions Center, Pennsylvania Water Science Center, Geology, Minerals, Energy, and Geophysics Science Center, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center
Geologic evaluation of aerial radar photographs of southwestern Oregon
No abstract available.
Authors
William P. Irwin
San Andreas Fault from San Francisco to Hollister
No abstract available.
Authors
E. E. Brabb, M. Maddock, R. E. Wallace
Magnetotelluric soundings in the southwestern United States
Twelve magnetotelluric soundings were made along a 460-mile traverse in the southwestern United States. Spectral analysis of digitized graphic records was used to determine apparent resistivities and phase differences for periods in the range 10-1,000 sec. The geoelectric section to depths of the order of 300 km was found to be divided into three principal layers. The layer nearest the surface has
Authors
Donald Plouff
Ordovician, Silurian, and Devonian biostratigraphy of east-central Alaska
A predominantly shale and chert sequence has been mapped from the Canadian border at Latitude 65°00′ N. to the Nation River about 25 miles northwest. It has Ordovician and Silurian graptolites in the lower half, and Middle Devonian corals and Upper Devonian spores in the upper half.The lower half of the sequence consists of about 400 to 900 feet of predominantly dark gray graptolitic shale with le
Authors
Michael Churkin, Earl E. Brabb
Preliminary geologic map of the Eagle D-1 quadrangle, east central Alaska
No abstract available.
Authors
Earl E. Brabb, Michael Churkin
Geological Survey research, 1965, Chapter D
Scientific notes and summaries of investigations by members of the Conservation, Geologic, and Water Resources Divisions tn geology, hydrology, and related fields.
Authors
Structure, Quaternary history, and general geology of the Corral Canyon area, Los Angeles County, California
The Corral Canyon nuclear power plant site consists of about 305 acres near the mouth of Corral Canyon in the central Santa Monica Mountains; it is located on an east-trending segment of the Pacific Coast between Point Dume and Malibu Canyon, about 28 miles due west of Los Angeles. The Santa Monica Mountains are the southwesternmost mainland part of the Transverse Ranges province, the east-trendin
Authors
R.F. Yerkes, Carl M. Wentworth
Franciscan and related rocks, and their significance in the geology of western California
No abstract available.
Authors
E. H. Bailey, W. P. Irwin, D. L. Jones