Skip to main content
U.S. flag

An official website of the United States government

Publications

Products (journal articles, reports, fact sheets) authored by current and past scientists are listed below. Please check the USGS Pubs Warehouse for other USGS publications.

Filter Total Items: 1924

Preliminary velocity and resistivity models of the Loma Prieta Earthquake region Preliminary velocity and resistivity models of the Loma Prieta Earthquake region

A preliminary three-dimensional velocity model of the Loma Prieta epicentral region in the Santa Cruz Mountains of California has been derived using raypaths from aftershocks recorded by the U.S.G.S. seismic network. In addition, a magnetotelluric sounding profile was completed prior to the earthquake and a two-dimensional resistivity model computed. The velocity and resistivity models...
Authors
Donna Eberhart-Phillips, Victor F. Labson, William D. Stanley, Andrew J. Michael, Brian D. Rodriguez

Assessment of the mineral resources for the Adel 1 degree by 2 degrees quadrangle, Oregon Assessment of the mineral resources for the Adel 1 degree by 2 degrees quadrangle, Oregon

No abstract available.
Authors
Walter J. Bawiec, Gerda A. Abrams, Carol A. Finn, James A. Pitkin, Jean L. Ryder, Steven M. Smith, Paul K. Theobald, Dean B. Vander Meulen, George W. Walker

The eruption of Redoubt Volcano, Alaska, December 14, 1989-August 31, 1990 The eruption of Redoubt Volcano, Alaska, December 14, 1989-August 31, 1990

No abstract available.
Authors
Thomas J. Casadevall, Bernard A. Chouet, John N. Davies, Steven A. Estes, Cynthia A. Gardner, Richard P. Hoblitt, John C. Lahr, Richard G. Lahusen, Jon J. Major, Robert G. McGimsey, Thomas P. Miller, Thomas L. Murray, Christina A. Neal, Christopher J. Nye, Robert A. Page, Thomas C. Pierson, John Power, Christopher D. Stephens, Richard B. Waitt

Infrared spectra and crystal chemistry of scapolites: implications for Martian mineralogy Infrared spectra and crystal chemistry of scapolites: implications for Martian mineralogy

Near‐infrared and midinfrared spectra of a wide range of scapolite compositions were studied to determine the cause of the 2.36‐μm features that have been correlated with similar features in the near‐IR spectrum of Mars. We attribute the 2.36−μm features to vibrations caused by HCO3− and HSO4− in the anion sites of scapolite. The 2.36‐μm absorption complex consists of four overlapping...
Authors
Gregg A. Swayze, Roger N. Clark

Sedimentology and petroleum occurrence, Schoolhouse Member, Maroon Formation (Lower Permian), northwestern Colorado Sedimentology and petroleum occurrence, Schoolhouse Member, Maroon Formation (Lower Permian), northwestern Colorado

The Lower Permian Schoolhouse Member of the Maroon Formation forms a partly exhumed petroleum reservoir in the Eagle basin of northwestern Colorado. The Schoolhouse consists mainly of yellowish gray to gray, low-angle to parallel bedded, very fine to fine-grained sandstone of eolian sand-sheet origin; interbedded fluvial deposits are present in most sections. Geological and geochemical...
Authors
Samuel Y. Johnson, Christopher J. Schenk, D. L. Anders, Michele L. Tuttle

Mineral resources of the Gibraltar Mountain and Planet Peak Wilderness Study Areas, La Paz County, Arizona Mineral resources of the Gibraltar Mountain and Planet Peak Wilderness Study Areas, La Paz County, Arizona

No abstract available.
Authors
Robert G. Eppinger, Jocelyn A. Peterson, H. Richard Blank, K. Eric Livo, Daniel H. Knepper, James A. Pitkin, Jon E. Spencer, Stephen J. Reynolds, Michael J. Grubensky, Terry J. Kreidler, David C. Scott
Was this page helpful?