The Quaternary and Pliocene Yellowstone Plateau volcanic field of Wyoming, Idaho, and Montana
Robert L. Christiansen
2001, Professional Paper 729-G
This region of Yellowstone National Park has been the active focus of one of the Earth's largest magmatic systems for more than 2 million years. The resulting volcanism has been characterized by the eruption of voluminous rhyolites and subordinate basalts but virtually no lavas of intermediate composition. The magmatic system...
Preliminary description of a model of ground-water flow and ground-water/surface-water interaction for predevelopment conditions in part of the Republican River basin, Nebraska, Kansas, and Colorado
M.K. Landon
2001, Open-File Report 2001-376
Preliminary assessment of streamflow characteristics for selected streams at Fort Gordon, Georgia, 1999-2000
Timothy C. Stamey
2001, Open-File Report 2001-296
In 1999, the U.S. Geological Survey, in cooperation with the U.S. Army Signal Center and Fort Gordon, began collection of periodic streamflow data at four streams on the military base to assess and estimate streamflow characteristics of those streams for potential water-supply sources. Simple and reliable methods of determining streamflow...
Design of a national survey of methyl tert-butyl ether and other volatile organic compounds in drinking water sources
Tamara Ivahnenko, S. J. Grady, G.C. Delzer
2001, Open-File Report 2001-271
Use of azimuthal square-array direct-current resistivity to locate a geologic structure at Fort Detrick, Maryland
D. H. Tepper, D. J. Phelan
2001, Open-File Report 2001-285
Estimation of hydraulic characteristics in the Santa Fe Group aquifer system using computer simulations of river and drain pulses in the Rio Bravo study area, near Albuquerque, New Mexico
D.M. Roark
2001, Water-Resources Investigations Report 2001-4069
In 1997, the U.S. Geological Survey conducted a hydrologic investigation of the surface-water/ground-water interaction of the Rio Grande and the surrounding alluvium and the Santa Fe Group aquifer system in an area near the Rio Bravo Bridge, south of Albu- querque, New Mexico. A set of existing wells and new wells...
Results of a monitoring program of continuous water levels, specific conductance, and water temperature at the OK Tool Facility of the Savage Municipal Well Superfund Site, Milford, New Hampshire
M.J. Brayton, P. T. Harte
2001, Open-File Report 2001-338
Transport in porous and fractured media of the Creede Formation
James L. Conca
2001, Open-File Report 94-260-N
No abstract available....
Interpretive geologic cross sections for the Death Valley regional flow system and surrounding areas, Nevada and California
D. S. Sweetkind, R. P. Dickerson, R.J. Blakely, Paul Denning
2001, Miscellaneous Field Studies Map 2370
This report presents a network of 28 geologic cross sections that portray subsurface geologic relations within the Death Valley regional ground-water system, a ground-water basin that encompasses a 3? x 3? area (approximately 70,000 km2) in southern Nevada and eastern California. The cross sections transect that part of the southern...
Global GIS database. Digital atlas of Africa
Paul Hearn, T.M. Hare, P. Schruben, D. Sherrill, C. LaMar, P. Tsushima
2001, Data Series 62-B
This CD-ROM contains a digital atlas of the countries of Africa. This atlas is part of a global database compiled from USGS and other data sources at a nominal scale of 1:1 million and is intended to be used as a regional-scale reference and analytical tool by government officials, researchers,...
Origin, extent, and thickness of quaternary geologic units in the Willamette Valley, Oregon
Jim E. O'Connor, Andrei M. Sarna-Wojcicki, Karl C. Wozniak, Danial J. Polette, Robert J. Fleck
2001, Professional Paper 1620
Stratigraphic and chronologic information collected for Quaternary deposits in the Willamette Valley, Oregon, provides a revised stratigraphic framework that serves as a basis for a 1:250,000-scale map, as well as for thickness estimates of widespread Quaternary geologic units. We have mapped 11 separate Quaternary units that are differentiated on the...
U. S. Geological Survey coalbed methane field conference, May 9-10, 2001
K. I. Takahashi, editor(s)
2001, Open-File Report 2001-235
No abstract available....
Global GIS database. Digital atlas of South Asia
Paul Hearn, T.M. Hare, P. Schruben, D. Sherrill, C. LaMar, P. Tsushima
2001, Data Series 62-C
This CD-ROM contains a digital atlas of the countries of South Asia. This atlas is part of a global database compiled from USGS and other data sources at a nominal scale 1:1 million and is intended to be used as a regional-scale reference and analytical tool by government officials, researchers,...
Water-level altitudes 2001, water-level changes 1977-2001 and 2000-2001, and compaction 1973-2000 in the Chicot and Evangeline aquifers, Houston-Galveston region, Texas
L.S. Coplin, Natalie A. Houston, Dexter W. Brown
2001, Open-File Report 2001-94
This report is one in an annual series of reports that depicts water-level altitudes and water-level changes since 1977 and compaction since 1973 in the Chicot and Evangeline aquifers in the Houston-Galveston region, Texas. The report, prepared in cooperation with the City of Houston and the Harris-Galveston Coastal Subsidence District,...
Structural resurgence and intracaldera volcanism - Creede Caldera, Colorado
Grant Heiken, Donathon J. Krier, Tamsin McCormick
2001, Open-File Report 94-260-D
No abstract available....
Thermal data for Creede Caldera Moat project coreholes
Edward R. Decker
2001, Open-File Report 94-260-O
No abstract available....
SHRIMP ion microprobe sulfur isotopic study of pyrite in corehole CCM-2: Evidence for multiple episodes of extreme biogenic sulfate reduction
Michael A. McKibben, Charles Stewart Eldridge
2001, Open-File Report 94-260-H
No abstract available....
Phenocryst compositions of late ash-flow tuffs from the central San Juan caldera cluster: Results from Creede drill-hole samples and implications for regional stratigraphy
Peter W. Lipman, Patricia E. Weston
2001, Open-File Report 94-260-B
No abstract available....
Depositional environments and authigenic mineral distributions in the Oligocene Creede Formation, Colorado, USA
Daniel Larsen, Laura J. Crossey
2001, Open-File Report 94-260-E
No abstract available....
Silicate diagenesis of tuffs in the Creede Formation
David B. Finkelstein, S. P. Altaner, R. L. Hay, S. Greenberg
2001, Open-File Report 94-260-F
No abstract available....
Geologic Map of the Hellas Region of Mars
Gregory J. Leonard, Kenneth L. Tanaka
2001, IMAP 2694
INTRODUCTION This geologic map of the Hellas region focuses on the stratigraphic, structural, and erosional histories associated with the largest well-preserved impact basin on Mars. Along with the uplifted rim and huge, partly infilled inner basin (Hellas Planitia) of the Hellas basin impact structure, the map region includes areas of ancient...
Quality-assurance data for routine water quality analyses by the U. S. Geological Survey laboratory in Troy, New York; July 1993 through June 1995
Tricia A. Lincoln, Debra A. Horan-Ross, Michael R. McHale, Gregory B. Lawrence
2001, Open-File Report 2001-71
A laboratory for analysis of low-ionic strength water has been developed at the U.S. Geological Survey (USGS) office in Troy, N.Y., to analyze samples collected by USGS projects in the Northeast. The laboratory's quality-assurance program is based on internal and interlaboratory quality-assurance samples and quality-control procedures developed to ensure proper...
Evaluating basin/shelf effects in the delivery of sediment-hosted contaminants in the Atchafalaya and Mississippi River deltas; a new U. S. Geological Survey coastal and marine geology project
P.W. Swarzenski
2001, Open-File Report 2001-215
Susceptibility index to surface contamination for the Little Cross Creek watershed, Cumberland County, North Carolina
M. J. Giorgino, Silvia Terziotti
2001, Water-Resources Investigations Report 2001-4143
An index of surface-water contamination potential was constructed for the Little Cross Creek Basin, a 9.7-square-mile, water-supply watershed in Cumberland County, North Carolina. The index was developed because previous water-quality investigations raised concerns regarding inputs of bacteria, suspended sediment, and phosphorus from nonpoint sources in the watershed. A geographic information...
Water quality in the upper Shoal Creek basin, southwestern Missouri, 1999-2000
John G. Schumacher
2001, Water-Resources Investigations Report 2001-4181
Results of a water-quality investigation of the upper Shoal Creek Basin in southwestern Missouri indicate that concentrations of total nitrite plus nitrate as nitrogen (NO2t+NO3t) in water samples from Shoal Creek were unusually large [mean of 2.90 mg/L (milligrams per liter), n (sample size)=60] compared to other Missouri streams (mean of 1.02...
