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Year Published: 1973

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...

Muehlberger, W.R.; Batson, R.M.; Cernan, E.A.; Freeman, V.L.; Haitt, M.H.; Holt, H.E.; Howard, Keith A.; Jackson, K.B.; Larson, V.S.; Reed, J.J.; Rennilson, J.J.; Schmitt, H.H.

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Year Published: 1973

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.

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Year Published: 1973

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.

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Year Published: 1973

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.

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Year Published: 1973

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.

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Year Published: 1973

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.
Tertiary plate tectonics and high-pressure metamorphism in New Caledonia; 1973; Article; Journal; Tectonophysics; Brothers, R. N.; Blake, Jr. , M. C.

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Year Published: 1972

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.
Principal facts for gravity stations in the San Francisco district and adjoining areas, Utah; 1972; USGS Unnumbered Series; Peterson, Donald L.

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Year Published: 1972

Geological Survey research 1972, Chapter B

Geological Survey research 1972, Chapter B; 1972; PP; 800-B; USGS NUMBERED SERIES; Geological survey research, 1972; Geological Survey (U.S.)

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Year Published: 1972

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...

Geological Survey research 1972, Chapter C; 1972; PP; 800-C; USGS NUMBERED SERIES; Geological survey research, 1972; Geological Survey (U.S.)

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Year Published: 1972

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.
Landslide susceptibility in San Mateo County, California; 1972; MF; 360; Brabb, E. E.; Pampeyan, E. H.; Bonilla, M. G.

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Year Published: 1972

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.
Maps showing distribution and cost by counties of structurally damaging landslides in the San Francisco Bay region, California, winter of 1968-69; 1972; MF; 327; Taylor, F. A.; Brabb, E. E.