Publications
Browse recent USGS publications related to energy resources.
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Origin of Franciscan melanges in Northern California Origin of Franciscan melanges in Northern California
In northern California, chaotic Franciscan melange occurs beneath the overlying ophiolite and Great Valley Sequence. Identical melanges occur to the west, separating well-bedded, coherent Franciscan units that differ markedly in age. Detailed studies in several places indicate that these melanges mark the boundaries of imbricate thrust sheets, and they appear to occur at several discrete
Authors
M. Clark Blake, D. L. Jones
Report on Circum-Pacific Energy and Mineral Resources Conferences Report on Circum-Pacific Energy and Mineral Resources Conferences
No abstract available.
Authors
M.T. Halbouty, J.F. Mason, E. E. Brabb
Geologic sketch of the Klamath Mountains and Coast Ranges of northern California and southern Oregon 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
Gravity anomalies in the Galapagos Islands area 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
Some interpretations of sequential bid pricing strategies Some interpretations of sequential bid pricing strategies
This note provides an alternative interpretation for sequential bid pricing strategies as initially formulated by Kortanek, Soden, and Sodaro [Kortanek, K. O., J. V. Soden, D. Sodabo. 1973. Profit analysis and sequential bid pricing models. Management Sci. 20 (3, November) 396–417. In particular, bid prices obtained from the sequential model are shown to result from a condition which...
Authors
Emil D. Attanasi
Geologic map of the Pickett Peak quadrangle, Trinity County, California Geologic map of the Pickett Peak quadrangle, Trinity County, California
No abstract available.
Authors
William P. Irwin, M. Clark Blake, C. G. Cunningham
Geologic Exploration of Taurus-Littrow: Apollo 17 Landing Site Geologic Exploration of Taurus-Littrow: Apollo 17 Landing Site
Apollo 17 landed in a deep graben valley embaying the mountainous highlands southeast of the Serenitatis basin. Impact-generated breccias underlie the massifs adjacent to the valley, and basalt has flooded and leveled the valley floor. The dark mantle inferred from orbital photographs was not recognized as a discrete unit; the unusually thick regolith of the valley floor contains a...
Authors
W.R. Muehlberger, R. M. Batson, E.A. Cernan, V. L. Freeman, M.H. Haitt, H. E. Holt, Keith A. Howard, K.B. Jackson, V.S. Larson, J.J. Reed, J. J. Rennilson, H.H. Schmitt
Trench exposures across surface fault ruptures associated with the San Fernando earthquake Trench exposures across surface fault ruptures associated with the San Fernando earthquake
No abstract available.
Authors
Manuel G. Bonilla
The Dun Mountain ultramafic belt Permian oceanic crust and upper mantle in New Zealand 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 the Upper Permian Maitai Group was deposited. After this...
Authors
M.C. Blake, C. A. Landis
Current slope-stability studies in the San Francisco Bay region 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 landslide, colluvial, and other surficial deposits, and maps of...
Authors
Tor H. Nilsen, Earl E. Brabb
Petrography and structural relations of granitic basement rocks in the Monterey Bay area, California 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. Therefore, as a sedimentary provenance, the basement around Monterey Bay...
Authors
Donald C. Ross, Earl E. Brabb
Tertiary plate tectonics and high-pressure metamorphism in New Caledonia 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 distinct phases.1. During the Late Eocene a...
Authors
R.N. Brothers, M.C. Blake