Publications
Publications from the staff of the Geology, Minerals, Energy, and Geophysics Science Center
Filter Total Items: 2339
Reconnaissance landslide map of parts of Marin and Sonoma counties, California
No abstract available.
Authors
Carl M. Wentworth, Virgil A. Frizzell
Rutile and sphene in blueschist and related high-pressure facies rocks
No abstract available.
Authors
M.C. Blake, Benjamin A. Morgan
A review of recently active faults in Taiwan
Six faults associated with five large earthquakes produced surface displacements ranging from 1 to 3 m in the period 1906 through 1951. Four of the ruptures occurred in the western coastal plain and foothills, and two occurred in the Longitudinal Valley of eastern Taiwan. Maps are included showing the locations and dimensions of the displacements. The published geological literature probably would
Authors
Manuel G. Bonilla
Paleotectonic investigations of the Pennsylvanian System in the United States, Part I: Introduction and regional analyses of the Pennsylvanian System
The Pennsylvanian is the fourth geologic system to be analyzed and synthesized by geologists of the U.S. Geological Survey in the form of a paleotectonic study covering the conterminous United States. Earlier investigations were of the Jurassic, Triassic, and Permian Systems. Results were published as Miscellaneous Geologic Investigation Maps I-175, I-300, and I-450 and in Professional Paper 515.
Authors
Edwin D. McKee, Eleanor J. Crosby, George O. Bachman, Kenneth G. Bell, George H. Dixon, Sherwood E. Frezon, Ernest E. Glick, William P. Irwin, William W. Mallory, William J. Mapel, Edwin K. Maughan, George E. Prichard, Gerald L. Shideler, Gary F. Stewart, Harold R. Wanless, Richard F. Wilson
Studies for seismic zonation of the San Francisco Bay region
The analyses presented in the preceding six papers show that the geologic setting of the San Francisco Bay region has a dominant influence on potential earthquake hazards. The strong correlation between geologic conditions and the amount of earthquake damage in 1906 emphasizes the importance of this influence and demonstrates the need for seismic zonation. Seismic zonation can provide the logical
Authors
Roger D. Borcherdt
Mineral resource models and the Alaskan Mineral Resource Assessment Program
The least exacting demand that can be made of any model is that it serves as a device whereby we can predict actual physical happenings. Another demand which could be made is that the physical happenings predicted be in some way relevant to man, either by allowing him to anticipate future uncontrollable events or by demonstrating the possible consequences of various decisions. To date, many minera
Authors
Donald A. Singer
Southern Patagonia—Glacial events between 4 m.y. and 1 m.y. ago
No abstract available.
Authors
John H. Mercer, Robert J. Fleck, Edward A. Mankinen, Walter Sander
Major chemical characteristics of Mesozoic Coast Range ophiolite in California
Sixty-four major element analyses of rocks representative of the Coast Range ophiolite in California were compared with analyses of other onland ophiolite sequences and those of rocks from oceanic ridges. The rocks can be classed in five groups harzburgite-dunite, clinopyroxenite-wehrlite, gabbro, basalt-spilite, and keratophyre-quartz keratophyre which on various diagrams occupy nonoverlapping fi
Authors
E. H. Bailey, M. C. Blake, Jr.
Fresh lunar impact craters: Review of variations in size
Thirty-three morphologic characteristics are reviewed for fresh lunar impact craters wide than1 km. Bar graphs express the way each characteristic varies with crater size. The features are grouped as crater structure, ejecta, and downhill flow features. Major structural transition occur at diameters of about 15 and 200 km. Details of the ejecta blanket, which include several kinds of lineations, d
Authors
Keith A. Howard
Gravity anomalies in the Galapagos Islands area
No abstract available.
Authors
Anthony B. Watts, J. R. Cochran, J. E. Case, S. L. Ryland, Tom Simkin, Keith A. Howard
Geologic sketch of the Klamath Mountains and Coast Ranges of northern California and southern Oregon
No abstract available.
Authors
W. P. Irwin, E.W. Wolfe, M. C. Blake, C.G. Cunningham
Lunar basin formation and highland stratigraphy
Multiring impact basins, formed after solidification of the lunar crust, account for most or all premare regional deposits and structures expressed in the lunar landscape and for major topographic and gravity variations. A fresh basin has two or more concentric mountain rings, a lineated ejecta blanket, and secondary impact craters. Crackled material on the floor may be impact melt. The ejecta bla
Authors
Keith A. Howard, D.E. Wilhelms, D. H. Scott