Publications
Filter Total Items: 7603
Structure of the crust in the conterminous United States Structure of the crust in the conterminous United States
On the basis of the newest interpretations of all sufficiently long seismic profiles, a contour map of the Mohorovičić discontinuity for the conterminous United States is compiled. Differences from earlier interpretations are discussed.
Authors
David H. Warren, J. H. Healy
Distribution and isotopic composition of uranium in lower Nueces River, Nueces Bay and Corpus Christi Bay, Texas Distribution and isotopic composition of uranium in lower Nueces River, Nueces Bay and Corpus Christi Bay, Texas
The uranium concentration and isotopic composition of water and suspended sediment from the Nueces River, Nueces Bay and Corpus Christi Bay were determined by alpha-spectroscopy. The average dissolved uranium concentration and radioactivity ratio (U234/U238) of Nueces River water were determined to be 2.44 µg/1 and 1.15 respectively. Water from a tributary of the Nueces River, Cayamon...
Authors
Charles W. Holmes, Elizabeth Ann Slade
Acoustic-reflection profiles, Transatlantic crossing-west: Leg 6, 1971 cruise, UNITEDGEO I Acoustic-reflection profiles, Transatlantic crossing-west: Leg 6, 1971 cruise, UNITEDGEO I
No abstract available.
Authors
Martin Francis Kane
Interstitial water studies on small core samples, Leg 9 Interstitial water studies on small core samples, Leg 9
The chemistry of the pore fluids obtained on Leg 9 is remarkable primarily in its constancy. Excepting silicon and strontium, only at one site do the concentrations of the major and minor constituents deviate notably from sea water concentrations (see Tables 1 and 2). The trends, or lack of them, seen in these samples have been discussed previously and only references will be given here...
Authors
F.L. Sayles, L.S. Waterman, F.T. Manheim
Acoustic-reflection profiles, Liberian continental margin: Leg 5, 1971 cruise, UNITEDGEO I Acoustic-reflection profiles, Liberian continental margin: Leg 5, 1971 cruise, UNITEDGEO I
No abstract available.
Authors
John Stevens Schlee
Acoustic-reflection profiles, Venezuela continental borderland: International Decade of Ocean Exploration, U.S. Geological Survey, Leg 4, 1971 cruise, UNITEDGEO I Acoustic-reflection profiles, Venezuela continental borderland: International Decade of Ocean Exploration, U.S. Geological Survey, Leg 4, 1971 cruise, UNITEDGEO I
No abstract available.
Authors
Eli A. Silver
Photogeology: Part J: ranger and other impact craters photographed by Apollo 16 Photogeology: Part J: ranger and other impact craters photographed by Apollo 16
The Apollo 16 crew photographed an unusual variety of impact craters, including the two craters produced by the impacts of Ranger 7 and 9 spacecraft, small craters produced by boulders as they bounced downslope, craters with marked bilateral symmetry, and primary craters with a wide range of morphologies and sizes. Ranger impact craters and examples of other craters are discussed briefly...
Authors
H. J. Moore
Photogeology: Part D: Descartes highlands: possible analogs around the Orientale Basin Photogeology: Part D: Descartes highlands: possible analogs around the Orientale Basin
The Descartes highlands are adjacent to the terra plain on which the Apollo 16 lunar module landed (fig. 29-13). A variety of volcanic origins was proposed for the highlands before the mission (refs. 29-4, 29-21, and 29-35 to 29-37), but the returned samples of the area consist almost exclusively of nonvolcanic breccias. The breccias obtained from Stone Mountain have not been identified
Authors
Carroll Ann Hodges
Orbital-science investigation: Part P: the process of crater removal in the lunar maria Orbital-science investigation: Part P: the process of crater removal in the lunar maria
The processes by which craters disappear from the lunar surface have been of principal concern since the first high-resolution pictures of the lunar maria were returned by Ranger VII. Those pictures revealed that craters smaller than a few hundred meters on the lunar maria vary morphologically from sharp and pristine features to shallow, highly subdued depressions. The constancy of the...
Authors
L.A. Soderblum