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: 2021
Are asbestos minerals common in US vermiculite deposits? Are asbestos minerals common in US vermiculite deposits?
No abstract available.
Authors
Bradley S. Van Gosen, Heather A. Lowers, Alfred L. Bush, Gregory P. Meeker, Geoffrey S. Plumlee, Isabelle K. Brownfield, Stephan J. Sutley
An overview of aggregate resources in the United States An overview of aggregate resources in the United States
In 2000 the USA produced about 2.7 billion tonnes of aggregate worth about $13.7 billion. Both crushed stone and sand and gravel are produced in virtually every State, although limited quantities are available in the Gulf Coastal Plain, the Colorado Plateau , the Wyoming Basin and the Great Plains. Prices vary depending on the product and location. Most aggregates are transported by road...
Authors
William H. Langer
Cassini/VIMS observations of the moon Cassini/VIMS observations of the moon
In this paper, we present preliminary scientific results obtained from the analysis of VIMS (Visible and Infrared Mapping Spectrometer) lunar images and spectra. These data were obtained during the Cassini Earth flyby in August 1999. Spectral ratios have been produced in order to derive lunar mineralogical maps. Some spectra observed at the north-east lunar limb, show few unusual...
Authors
G. Belluci, R. Brown, V. Formisano, K. H. Baines, J.-P. Bibring, B. J. Buratti, F. Capaccioni, P. Cerroni, R. N. Clark, A. Coradini, D. P. Cruikshank, P. Drossart, R. Jaumann, Y. Langevin, D. L. Matson, T. B. McCord, V. Mennella, E. Miller, R.M. Nelson, P. Nicholson, B. Sicardy, Christophe Sotin
Age constraints on fluid inclusions in calcite at Yucca Mountain Age constraints on fluid inclusions in calcite at Yucca Mountain
No abstract available.
Authors
Leonid A. Neymark, Yuri V. Amelin, James B. Paces, Zell E. Peterman, Joseph F. Whelan
Using high-resolution aeromagnetic surveys to map subsurface hydrogeology in sediment-filled basins: A case study over the Rio Grande Rift, Central New Mexico, USA Using high-resolution aeromagnetic surveys to map subsurface hydrogeology in sediment-filled basins: A case study over the Rio Grande Rift, Central New Mexico, USA
High-resolution aeromagnetic surveys were acquired for the Albuquerque basin in the central Rio Grande rift, a basin filled with poorly consolidated sediments. The surveys proved successful in efficiently and economically mapping previously unknown hydrogeologic features of the shallow subsurface. This success suggests that aeromagnetic methods may be useful in hydrogeologic studies of...
Authors
V. J. S. Grauch
1:100,000-scale topographic contours derived from digital elevation models, San Francisco Bay region, California: a digital database 1:100,000-scale topographic contours derived from digital elevation models, San Francisco Bay region, California: a digital database
This report presents a consistent set of 1:100,000-scale vector topographic contours for all eleven 30x60-minute quadrangles in the San Francisco Bay region for use in visualizing the topography and preparing maps of the region. The contours were prepared by contouring an areally continuous 30-m altitude grid (National Elevation Dataset, Jan., 1999), and differ from USGS hypsographic DLG...
Authors
Heather M. Wright, Carl M. Wentworth
Strontium isotope evolution of pore water and calcite in the Topopah Spring Tuff, Yucca Mountain, Nevada Strontium isotope evolution of pore water and calcite in the Topopah Spring Tuff, Yucca Mountain, Nevada
Yucca Mountain, a ridge of Miocene volcanic rocks in southwest Nevada, is being characterized as a site for a potential high-level radioactive waste repository. One issue of concern for the future performance of the potential repository is the movement of water in and around the potential repository horizon. Past water movement in this unsaturated zone is indicated by fluid inclusions...
Authors
Brian D. Marshall, Kiyoto Futa
Field trip day four: Road log for the Sterling Hill and Franklin Zinc Mines, New Jersey Field trip day four: Road log for the Sterling Hill and Franklin Zinc Mines, New Jersey
This portion of the field trip features visits to the world famous Sterling Hill and Franklin mines, in northwestern New Jersey, and their respective mining museums. Although both mines are no longer in operation, important geologic features can still be observed. At the Sterling Hill mine, we will have the opportunity to see zinc ore in place, both in an underground drift and in the...
Authors
Robert W. Metsger, Richard A. Volkert, Craig A. Johnson
Geochemical constraints on the origin of the Sterling Hill and Franklin zinc deposits, and the furnace magnetite bed, northwestern New Jersey Geochemical constraints on the origin of the Sterling Hill and Franklin zinc deposits, and the furnace magnetite bed, northwestern New Jersey
The purpose of this chapter is to review two aspects of the geochemistry of the Sterling Hill and Franklin zinc-ironmanganese deposits and the Furnace magnetite bed that underlies the Franklin deposit. These are (1) oxidation and sulfidation states determined from heterogeneous phase equilibria, and (2) stable isotopic compositions determined from analyses of carbonate, silicate, oxide...
Authors
Craig A. Johnson
Investigating a physical basis for spectroscopic estimates of leaf nitrogen concentration Investigating a physical basis for spectroscopic estimates of leaf nitrogen concentration
The reflectance spectra of dried and ground plant foliage are examined for changes directly due to increasing nitrogen concentration. A broadening of the 2.1-??m absorption feature is observed as nitrogen concentration increases. The broadening is shown to arise from two absorptions at 2.054 ??m and 2.172 ??m. The wavelength positions of these absorptions coincide with the absorption
Authors
R.F. Kokaly
Application of geophysical techniques to minerals-related environmental problems Application of geophysical techniques to minerals-related environmental problems
No abstract available.
Authors
Ken Watson, David Fitterman, R. W. Saltus, Anne McCafferty, Gregg A. Swayze, Stan Church, Kathy Smith, Marty Goldhaber, Stan Robson, Pete McMahan