Environmental studies of the World Trade Center area after the September 11, 2001 attack
Roger N. Clark, Robert O. Green, Gregg A. Swayze, Greg Meeker, Steve Sutley, Todd M. Hoefen, K. Eric Livo, Geoff Plumlee, Betina Pavri, Chuck Sarture, Steve Wilson, Phil Hageman, Paul Lamothe, J. Sam Vance, Joe Boardman, Isabelle Brownfield, Carol Gent, Laurie C. Morath, Joseph Taggart, Peter M. Theodorakos, Monique Adams
2001, Open-File Report 2001-429
This web site describes the results of an interdisciplinary environmental characterization of the World Trade Center (WTC) area after September 11, 2001.Information presented in this site was first made available to the World Trade Center emergency response teams on September 18, 2001 (Thermal hot spot information), and September...
Outcrop structural data from Wales Group and adjacent rocks, Dall and Prince of Wales islands, southeastern Alaska
Peter J. Haeussler, Susan M. Karl, Keith A. Labay
2001, Open-File Report 2001-428
This report presents a compilation of 3224 measurements of outcrop structures from Wales Group and adjacent strata on Dall and Prince of Wales Islands, southeastern Alaska. We collected 2230 measurements, an additional 344 were digitized from the map of Eberlein and others (1983), and an additional 650 come from the...
Outcrop structural data from parts of the Petersburg and Sumdum 1:250,000-scale quadrangles, southeastern Alaska
Peter J. Haeussler, Susan M. Karl
2001, Open-File Report 2001-427
This report presents a compilation of 4203 measurements of outcrop structures from part of the Petersburg 1:250,000-scale quadrangle in southeastern Alaska. We collected 1966 measurements, and an additional 2237 unpublished measurements were compiled from field notebooks a from a field mapping effort in the late 1970’s and early 1980’s. These...
The internal structure of sand bars on the Colorado River, Grand Canyon, as determined by ground-penetrating radar
Walter A. Barnhardt, Robert Kayen, David Rubin, Diane L. Minasian
2001, Open-File Report 2001-425
High-resolution, subsurface imagery from ground-penetrating radar (GPR) has revealed the internal structure of sand bars at seven sites on the Colorado River, Grand Canyon. Based on reconnaissance-level surveys, we recognized three stratigraphic units and several intervening unconformities. Unit A, which exhibits hyperbolic reflections and always occurs at the base of...
Principal facts for gravity data collected in South Dakota: a web site for distribution of data
Robert P. Kucks, Ronald L. Zawislak
2001, Open-File Report 2001-423
Principal facts for 12266 new gravity stations and 2880 stations previously released in paper form (Klasner and Kucks, 1988) for the state of South Dakota are presented. These data were contracted to fill a gap in existing data coverage for the state. Observed and Bouguer anomaly data for this regional...
Land use change and effects on water quality and ecosystem health in the Lake Tahoe basin, Nevada and California
William Forney, Lora Richards, Kenneth D. Adams, Timothy B. Minor, Timothy G. Rowe, J. LaRue Smith, Christian G. Raumann
2001, Open-File Report 2001-418
Human activity in the Lake Tahoe Basin has increased substantially in the past four decades, causing significant impacts on the quality and clarity of the lake's famous deep, clear water. Protection of Lake Tahoe and the surrounding environment has become an important activity in recent years. A variety of agencies,...
Chemical composition of samples collected from waste rock dumps and other mining-related features at selected phosphate mines in southeastern Idaho, western Wyoming, and northern Utah
Phillip R. Moyle, J. Douglas Causey
2001, Open-File Report 2001-411
This report provides chemical analyses for 31 samples collected from various phosphate mine sites in southeastern Idaho (25), northern Utah (2), and western Wyoming (4). The sampling effort was undertaken as a reconnaissance and does not constitute a characterization of mine wastes. Twenty-five samples were collected from waste rock dumps,...
High-resolution seismic reflection/refraction images near the outer margin of the Chesapeake Bay impact crater, York-James Peninsula, southeastern Virginia
R. D. Catchings, D.E. Saulter, D.S. Powars, M. R. Goldman, J.A. Dingler, G. S. Gohn, J.S. Schindler, G.H. Johnson
2001, Open-File Report 2001-407
Powars and Bruce (1999) showed that the Chesapeake Bay region of southeastern Virginia was the site of an asteroid or comet impact during the late Eocene, approximately 35 million years ago (Fig. 1). Initial borehole and marine seismic-reflection data revealed a 90-km-diameter impact structure, referred to as the Chesapeake Bay...
Images of the World Trade Center site show thermal hot spots on September 16 and 23, 2001
Roger N. Clark, Robert O. Green, Gregg A. Swayze, Todd M. Hoefen, K. Eric Livo, Betina Pavi, Chuck Sarcher, Joe Boardman, J. Sam Vance
2001, Open-File Report 2001-405
Locatable mineral reports for South Dakota and Colorado, provided to the U.S. Forest Service in fiscal years 2000 and 2001
Anna B. Wilson
2001, Open-File Report 2001-401
Facies analysis of late Proterozoic through Lower Cambrian rocks of the Death Valley regional ground-water system and surrounding areas, Nevada and California
Donald S. Sweetkind, Diane K. White
2001, Open-File Report 2001-351
Altitude and configuration of the potentiometric surface in lower Elk Creek watershed, Chester County, Pennsylvania, March through September 2000
Abdul Mohammad
2001, Open-File Report 2001-329
No abstract available...
Mineral potential modelling of gold and silver mineralization in the Nevada Great Basin — A GIS-based analysis using weights of evidence
Mark J. Mihalasky
2001, Open-File Report 2001-291
The distribution of 2,690 gold-silver-bearing occurrences in the Nevada Great Basin was examined in terms of spatial association with various geological phenomena. Analysis of these relationships, using GIS and weights of evidence modelling techniques, has predicted areas of high mineral potential where little or no mining activity exists. Mineral potential...
Altitude and configuration of the regional potentiometric surface, Willow Grove Naval Air Station/Joint Reserve Base and vicinity, Horsham Township, Montgomery County, Pennsylvania, October 7-8, 1999
Ronald A. Sloto, D.J. Goode, John H. Way
2001, Open-File Report 2001-149
No abstract available ...
A field conference on Impacts of coalbed methane development in the Powder River basin, Wyoming
Romeo M. Flores, Gary D. Stricker, Joseph F. Meyer, Thomas E. Doll, Pierce H. Norton, Robert J. Livingston, M. Craig Jennings, Scott Kinney, Heather Mitchell, Steve Dunn
2001, Open-File Report 2001-126
Coalbed methane (CBM) development from the Paleocene Fort Union Formation coal beds in the Powder River Basin in Wyoming has been rapidly expanding since 1993. During the past ten years the number of CBM producing wells rose to about 4,000 wells as of October, 2000. About 3,500 of these wells...
Potentiometric surface of the upper Floridan Aquifer, west-central Florida, September 2000
A. D. Duerr
2001, Open-File Report 2001-115
Potentiometric surfaces of the intermediate aquifer system, west-central Florida, September 2000
A. D. Duerr
2001, Open-File Report 2001-114
The intermediate aquifer system underlies a 5,000-square-mile area within the Southwest Florida Water Management District including De Soto, Sarasota, Hardee, Manatee, and parts of Charlotte, Hillsborough, Highlands, Polk, and Lee Counties. The intermediate aquifer system is overlain by the surficial aquifer system and is underlain by the Floridan aquifer system....
Preliminary mineralogical characterization of weathered and less-weathered strata of the Meade Peak phosphatic shale member of the Permian Phosphoria Formation: Measured sections C and D, Dry Valley, Caribou County, Idaho
Andrew C. Knudsen, Mickey E. Gunter, James R. Herring
2001, Open-File Report 2001-72
This study used powder X-ray diffraction, with Rietveld quantification software to quantify and characterize the mineralogy of the 83 samples collected from two stratigraphic sections measured by the U.S. Geological Survey at the Dry Valley mine in the Meade Peak Member of the Phosphoria Formation. Analyses show extensive variability of...
A simple calculator of ballistic trajectories for blocks ejected during volcanic eruptions
Larry G. Mastin
2001, Open-File Report 2001-45
During the past century, numerous observers have described the violent ejection of large blocks and bombs from volcanoes during volcanic explosions. Minakami (1942) mapped the locations of blocks ejected from Asama Volcano during explosions in 1937. He developed a mathematical expression relating initial velocity and trajectory angle of ejected blocks...
Tampa Bay, Florida, March 22, 1991
Water Resources Division, U.S. Geological Survey
2001, Open-File Report 2001-9
This poster has been prepared for education purposes. Colors are near neutral. Water and swampy areas are blue-black. Healthy plant growth is green. Agricultural fields and areas with low plant growth are pink and beige. Highways, parking lots, and other black surfaces are purple. Beach sand, cleared land, and cement...
Geologic map of the Riverside East 7.5' quadrangle, Riverside County, California
Douglas M. Morton, Brett F. Cox
2001, Open-File Report 2001-452
Open-File Report 01-452 contains a digital geologic map database of the Riverside East 7.5’ quadrangle, Riverside County, California that includes: ARC/INFO Environmental Systems Research Institute (http://www.esri.com) version 7.2.1 coverages of the various elements of the geologic map. A Postscript file to plot the geologic map on a topographic base, containing a Correlation...
Geologic map of the Riverside West 7.5' quadrangle, Riverside County, California
Douglas M. Morton, Brett F. Cox
2001, Open-File Report 2001-451
Open-File Report 01-451 contains a digital geologic map database of the Riverside West 7.5’ quadrangle, Riverside County, California that includes: ARC/INFO (Environmental Systems Research Institute, http://www.esri.com) version 7.2.1 coverages of the various elements of the geologic map. A PostScript file to plot the geologic map on a topographic base, containing a Correlation...
Application of geophysical techniques to minerals-related environmental problems
Ken Watson, David Fitterman, R. W. Saltus, Anne McCafferty, Gregg A. Swayze, Stan Church, Kathy Smith, Marty Goldhaber, Stan Robson, Pete McMahan
2001, Open-File Report 2001-458
Thickness and geometry of Cenozoic deposits in California Wash area, Nevada, based on gravity and seismic-reflection data
V.E. Langenheim, J. J. Miller, W. R. Page, J. A. Grow
2001, Open-File Report 2001-393
Gravity and seismic-reflection data provide insights into the subsurface stratigraphy and structure of the California Wash area of southern Nevada. This area is part of the Lower Colorado flow system and stratigraphic and structural data are important inputs into developing the hydrogeologic framework. These data indicate that the basin beneath...
Spectral induced polarization measurements at the Carlisle mine dump, New Mexico
David L. Campbell, Shay Beanland
2001, Open-File Report 2001-363
No abstract available....
