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Publications

Results from our Program’s research and minerals information activities are published in USGS publications series as well as in outside journals.  To follow Minerals Information Periodicals, subscribe to the Mineral Periodicals RSS feed.

Filter Total Items: 2294

Report of status of Reactor Hazards Research Program: fiscal years 1976-1977

The Reactor Hazards Research Program is a Geological Survey program directed at expediting the safe siting and design of power reactors in the United States through topical and regional work on major geological hazards, particularly faulting, earthquake shaking, volcanism, and gross failure of foundation materials (table 1). It is complimentary to the more directed research sponsored by the Nuclea
Authors
Carl M. Wentworth

Implications of a magnetic model of the Long Valley caldera, California

A quantitative magnetic model of Long Valley, California, shows that the magnetic field above this caldera is dominated by intracaldera Bishop tuff, part of the ash flow tuff whose eruption precipitated the caldera collapse. We propose that about half of the 350 km3 of intracaldera Bishop tuff, or that part beneath the resurgent dome, has been subjected to extensive hydrothermal alteration. The he
Authors
D.L. Williams, F. Berkman, Edward A. Mankinen

A portable helium sniffer

A portable helium sniffer has been developed for field use. The instrument is mounted in a four-wheel-drive pickup truck and can detect 50 parts per billion of helium in soil gas. The usefulness of helium sniffing in soil is being investigated as a prospecting tool in gas, oil, uranium, and geothermal prospecting as well as in earthquake prediction.
Authors
Irving Friedman, E.H. Denton

Regional geologic framework off northeastern United States

Six multichannel seismic-reflection profiles taken across the Atlantic continental margin off the northeastern United States show an excess of 14 km of presumed Mesozoic and younger sedimentary rocks in the Baltimore Canyon trough and 8 km in the Georges Bank basin.Beneath the continental rise, the sedimentary prism thickness exceeds 7 km south of New Jersey and Maryland, and it is 4.5 km thick so
Authors
John Schlee, John C. Behrendt, John A. Grow, James M. Robb, Robert E. Mattick, P. T. Taylor, B. J. Lawson

Exploration for porphyry copper deposits in Pakistan using digital processing of Landsat-1 data

Rock-type classification by digital-computer processing of Landsat-1 (formerly ERTS-1) multispectral scanner data has been used to select 23 prospecting targets in the Chagai District, Pakistan, 5 of which have proved to be large areas of hydrothermally altered porphyry containing pyrite. The known porphyry copper deposit at Saindak was used as a control area. Empirical maximum and minimum apparen
Authors
Robert G. Schmidt