Energy Resources Program
Publications
Trench exposures across surface fault ruptures associated with the San Fernando earthquake
No abstract available.
Bonilla, Manuel G. The Dun Mountain ultramafic belt Permian oceanic crust and upper mantle in New Zealand
Geologic evidence suggests that the Dun Mountain ultramafic belt in New Zealand is the basal part of a Lower Permian ophiolite suite. By analogy with other ophiolite suites, and as a result of marine geophysical studies of the present ocean basins, the ophiolite is believed to represent oceanic crust and upper mantle upon which...
Blake, M. C.; Landis, C. A. Current slope-stability studies in the San Francisco Bay region
An extensive program of slope-stability studies is presently underway in the San Francisco Bay region, California. Work to date has resulted in the publication of estimates of landslide damage, an estimated-landslide-abundance map of the region, new slope maps prepared by photomechanical processes, photointerpretive maps of...
Nilsen, Tor H.; Brabb, Earl E. Petrography and structural relations of granitic basement rocks in the Monterey Bay area, California
In the past, the granitic basement of the Coast Ranges has been thought to be dominantly quartz diorite and low in K-feldspar. However, a study of outcrops around Monterey Bay, basement well samples, and dredge samples from Monterey Bay shows that the granitic basement averages about 15 to 20 percent K-feldspar. ...
Ross, Donald C.; Brabb, Earl E. Cretaceous mafic conglomerate near Gualala offset 350 miles by San Andreas fault from oceanic crustal source near Eagle Rest Peak, California
Upper Cretaceous mafic conglomerate and quartz-plagioclase arkose that crop out on the southwest side of the San Andreas fault near Gualala, Calif., may have been eroded from a gabbroic terrane that now lies about 350 miles to the southeast, on the opposite side of the San Andreas fault. The plagioclase arkose near Gualala...
Ross, Donald C.; Wentworth, Carl M.; McKee, Edwin D. Tertiary plate tectonics and high-pressure metamorphism in New Caledonia
The sialic basement of New Caledonia is a Permian-Jurassic greywacke sequence which was folded and metamorphosed to prehnite-pumpellyite or low-grade greenschist facies by the Late Jurassic. Succeeding Cretaceous-Eocene sediments unconformably overlie this basement and extend outwards onto oceanic crust. Tertiary tectonism occurred in three...
Brothers, R.N.; Blake, M. C.
Principal facts for gravity stations in the San Francisco district and adjoining areas, Utah
Observed gravity values, station locations, terrain corrections, and Bouguer gravity data are provided in tabular form for approximately 450 gravity observations in southwestern Utah.
Peterson, Donald L.
Geological Survey research 1972, Chapter B
Geological Survey research 1972, Chapter C
This collection of 37 short papers is the second published chapter of "Geological Survey Research 1972." The papers report on scientific and economic results of current work by members of the Conservation, Geologic, and Water Resources Divisions of the U.S. Geological Survey.Chapter A, to be published later in the year, will present a summary of...
Landslide susceptibility in San Mateo County, California
Information on areas susceptible to failure by landsliding is available in many general geologic maps and reports. However, it is commonly presented in complex, technical language, together with data not connected with slope stability. This derivative map is intended to convey such information in nontechnical form so that it will be...
Brabb, Earl E.; Pampeyan, Earl H.; Bonilla, Manuel G. Maps showing distribution and cost by counties of structurally damaging landslides in the San Francisco Bay region, California, winter of 1968-69
Taylor, F.A.; Brabb, E.E.