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Not all publications have extents, not all extents are completely accurate
Hawaiian Volcano Observatory summary 100; Part 1, seismic data, January to December 2000
Jennifer S. Nakata
2001, Open-File Report 2001-332
The Hawaiian Volcano Observatory (HVO) summary presents seismic data gathered during the year and a chronological narrative describing the volcanic events. The seismic summary is offered without interpretation as a source of preliminary data. It is complete in the sense that all data for events of M≥1.5 routinely gathered by...
Occurrence and distribution of selected contaminants in public drinking-water supplies in the surficial aquifer in Delaware
Matthew J. Ferrari
2001, Open-File Report 2001-327
Water samples were collected from August through November 2000 from 30 randomly selected public drinking-water supply wells screened in the unconfined aquifer in Delaware, and analyzed to assess the occurrence and distribution of selected pesticide compounds, volatile organic compounds, major inorganic ions, and nutrients. Water from a subset of 10...
Borehole P- and S-wave velocity at thirteen stations in Southern California
James F. Gibbs, David M. Boore, John C. Tinsley III, Charles S. Mueller
2001, Open-File Report 2001-506
The U.S. Geological Survey (USGS), as part of a program to acquire seismic velocity data at locations of strong-ground motion in earthquakes (e.g., Gibbs et al., 2000), has investigated thirteen additional sites in the Southern California region. Of the thirteen sites, twelve are in the vicinity of Whittier, California, and...
Gravity and Magnetic Surveys Over the Santa Rita Fault System, Southeastern Arizona
Mary Hegmann
2001, Open-File Report 2001-503
Gravity and magnetic surveys were performed in the northeast portion of the Santa Rita Experimental Range, in southeastern Arizona, to identify faults and gain a better understanding of the subsurface geology. A total of 234 gravity stations were established, and numerous magnetic data were collected with portable and truck-mounted proton precession...
Volcano hazards at Fuego and Acatenango, Guatemala
J.W. Vallance, S. P. Schilling, O. Matias, William I. Rose Jr., M.M. Howell
2001, Open-File Report 2001-431
The Fuego-Acatenango massif comprises a string of five or more volcanic vents along a north-south trend that is perpendicular to that of the Central American arc in Guatemala. From north to south known centers of volcanism are Ancient Acatenango, Yepocapa, Pico Mayor de Acatenango, Meseta, and Fuego. Volcanism along the...
Chemical composition of strata of the Meade Peak Phosphatic Shale Member of the Permian Phosphoria Formation: Channel-composited and individual rock samples of measured section J and their relationship of measured sections A and B, central part of Rasmussen Ridge, Caribou County, Idaho
J. R. Herring, R. I. Grauch, D. F. Siems, R. G. Tysdal, E. A. Johnson, R. A. Zielinski, G. A. Desborough, A. Knudsen, M. E. Gunter
2001, Open-File Report 2001-195
This study, one in a series, reports bulk chemical composition of rock samples collected from a core, referred to as Measured Section J, drilled at a site that subsequently was developed into the Enoch Valley phosphate mine in southeastern Idaho. The core is continuous and cuts through the entire thickness...
Selected hydrologic data for Cedar Valley, Iron County, southwestern Utah, 1930-2001
James H. Howells, James L. Mason, Bradley A. Slaugh
2001, Open-File Report 2001-419
This report presents hydrologic data collected by the U. S. Geological Survey from 1930 to 2001 with emphasis on data collected from 1997 to 2001 as part of a study of ground-water resources in Cedar Valley, Iron County, southwestern Utah (fig. 1). Data collected prior to this study are also...
Hayward Fault rocks: porosity, density, and strength measurements
C.A. Morrow, D.A. Lockner
2001, Open-File Report 2001-421
Porosity, density and strength measurements were conducted on rock samples collected from the Hayward Fault region in Northern California as part of the Hayward Fault Working Group’s efforts to create a working model of the Hayward Fault. The rocks included in this study were both fine and coarse grained gabbros,...
GRA prospectus: optimizing design and management of protected areas
Richard Bernknopf, David Halsing
2001, Open-File Report 2001-404
Protected areas comprise one major type of global conservation effort that has been in the form of parks, easements, or conservation concessions. Though protected areas are increasing in number and size throughout tropical ecosystems, there is no systematic method for optimally targeting specific local areas for protection, designing the protected...
Facies analysis of Tertiary basin-filling rocks of the Death Valley regional ground-water system and surrounding areas, Nevada and California
Donald S. Sweetkind, Christopher J. Fridrich, Emily Taylor
2001, Open-File Report 2001-400
Existing hydrologic models of the Death Valley region typically have defined the Cenozoic basins as those areas that are covered by recent surficial deposits, and have treated the basin-fill deposits that are concealed under alluvium as a single unit with uniform hydrologic properties throughout the region, and with depth. Although...
Chromite deposits in central part Stillwater Complex, Sweet Grass County, Montana: A digital database for the geologic map of the east slope of Iron Mountain
A. L. Howland, Lorre A. Moyer
2001, Open-File Report 2001-321
In 1940, A.L. Howland and J. W. Peoples, assisted by W.R. Jones and M.G. Bennett, mapped the geology of the east slope of Iron Mountain, Montana. The map was revised and extended by Howland in 1942 and published in 1955 as plate 10 of the U.S. Geological Survey Bulletin 1015-D...
A preliminary survey of marine contamination from mining-related activities on Marinduque Island, Philippines: porewater toxicity and chemistry results from a field trip, October 14-19, 2000
R. Scott Carr, Marion Nipper, Geoffrey S. Plumlee
2001, Open-File Report 2001-441
As a follow-up of an initial overview of environmental problems caused by mining activities on Marinduque Island, Philippines, USGS and TAMU-CC scientists went to Marinduque in October 2000 to do a preliminary assessment of potential impacts of mining-related activities on the marine environment. Like the previous visit in May 2000,...
Cruise Report; RV Moana Wave cruise M1-01-GM; the bathymetry and acoustic backscatter of the mid shelf to upper slope off Panama City, Florida, northeastern Gulf of Mexico; September 3, through October 12, 2001, Panama City, FL to Panama City, FL
James V. Gardner, Larry A. Mayer, John E. Hughes Clarke, Peter Dartnell, Kenneth J. Sulak
2001, Open-File Report 2001-448
A zone of deep-water reefs is thought to extend from the mid and outer shelf south of Mississippi and Alabama to at least the northwestern Florida shelf off Panama City, Florida (Figure 1, 67kb). The reefs off Mississippi and Alabama are found in water depths of 60 to 120 m...
How brucite may affect the frictional properties of serpentinite
Diane E. Moore, David A. Lockner, K. Iwata, H. Tanaka, J.D. Byerlee
2001, Open-File Report 2001-320
The frictional strength of brucite gouge has been measured at hydrothermal conditions to 450°C. At room temperature, brucite has a coefficient of friction, μ ≈ 0.30, making it one of the weakest minerals identified to date. With increasing temperature at a constant effective normal stress, the coefficient of friction of...