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Page 5591, results 139751 - 139775

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Soapstone deposits of the Sherwan area, Hazara District, Pakistan
James Alfred Calkins, Terry W. Offield, S. Tayyab Ali
1973, Open-File Report 73-41
The soapstone deposits in the Sherwan area, Hazara District, are mostly in a narrow 10 mile zone in the dolomite unit of the Abbottabad Formation of probable Carboniferous age. Most of the deposits are at the eastern end on the northern flank of a syncline. Soapstone forms irregular replacement bodies...
Interagency Report: Astrogeology 58, television cartography
Raymond M. Batson
1973, Open-File Report 73-21
The purpose of this paper is to illustrate the processing of digital television pictures into base maps. In this context, a base map is defined as a pictorial representation of planetary surface morphology accurately reproduced on standard map projections. Topographic contour lines, albedo or geologic overprints may be super imposed...
Index of metallic mineral deposits of Alaska compiled from reports in open files of the U.S. Geological Survey and U.S. Bureau of Mines through 1972
Edward H. Cobb
1973, Open-File Report 73-47
This index supplements a similar index of published reports (Cobb, 1973) currently being processed for formal publication. Inasmuch as many open-file reports are preliminary and eventually superseded by final published reports, it is inappropriate to include references to open-file reports in a permanent index. As most preliminary reports are of...
Liquefaction potential of unconsolidated sediments in the southern San Francisco Bay Region, California
T. Leslie Youd, D.R. Nichols, E. J. Helley, K. R. Lajoie
1973, Open-File Report 73-368
A preliminary map of liquefaction potential of unconsolidated sediments has been made for the southern part of the San Francisco Bay region. Map zones are established on the basis of recent detailed geologic mapping. Liquefaction potential for each zone is estimated from an analysis of lithologic, water-table and standard penetration test data. Due to empirical...
Probable rift origin of the Canada basin, Arctic Ocean
Irvin L. Tailleur
1973, Open-File Report 73-274
Formation of the Canada basin by post-Triassic rifting seems the most workable and logical hypothesis with information available. Speculated counterclockwise rotation of the Alaska-Chukchi continental edge best rationalizes the complex geology of northern Alaska, whereas a single continental block before the Jurassic makes the best palinspastic fit for Arctic America....