Hot, shallow mantle melting under the Cascades volcanic arc
Linda T. Elkins Tanton, Timothy L. Grove, Julie Donnelly-Nolan
2001, Geology (29) 631-634
Melting occurs at progressively greater depths and higher temperatures from west to east across the Cascades volcanic arc in northern California, as demonstrated by compositional variations observed in high-alumina olivine tholeiites. The lavas studied erupted from seven vents defining a 75-km-long, east-west transect across the arc, from near Mount Shasta...
Exploring the relationship between nearshore morphology and shoreline change
Peter Ruggiero, Guy Gelfenbaum, David Thompson, George M Kaminsky
2001, Conference Paper, Coastal dynamics '01
Nearshore bathymetry data collected along the US Pacific Northwest is analyzed to determine relationships between nearshore morphology and shoreline change at a variety of spatial scales. Sandbar properties are compared at three sites, locations separated by tens of kilometers but subject to similar hydrodynamic forcing and having like sediment characteristics....
Coastal evolution and sediment budget at the mouth of the Columbia River, USA
Guy Gelfenbaum, Maarten C. Buijsman, Christopher R. Sherwood, Hans R. Moritz, Ann E. Gibbs
2001, Conference Paper, Coastal dynamics '01
The coastal morphology of the Mouth of the Columbia River (MCR) has changed dramatically over the past century. Since the construction of jetties in 1914 and 1917, the inlet deepened and stabilized, the outer ebb delta migrated northward and offshore several kilometers, and the adjacent shorelines to the north and...
Sediment transport on a high-energy ebb-tidal delta
Christopher R. Sherwood, Guy Gelfenbaum, Peter A. Howd, Margaret L. Palmsten
2001, Conference Paper, Coastal dynamics '01
Six tripods were deployed at shallow (~14-m) and deep (~24-m) sites on the northern, middle, and southern flanks of the Grays Harbor, Washington, U.S.A. ebb-tidal delta from early October through December, 1999 to measure waves, currents, temperature, and suspended-sediment concentrations as part of a wave-refraction and sediment-transport experiment. Directional wave...
Negative binomial models for abundance estimation of multiple closed populations
Mark S. Boyce, Darry I. MacKenzie, Bryan F.J. Manly, Mark A. Haroldson, David W. Moody
2001, Journal of Wildlife Management (65) 498-509
Counts of uniquely identified individuals in a population offer opportunities to estimate abundance. However, for various reasons such counts may be burdened by heterogeneity in the probability of being detected. Theoretical arguments and empirical evidence demonstrate that the negative binomial distribution (NBD) is a useful characterization for counts from biological...
Assessment of undiscovered oil and gas resources in Central and South America
Water Resources Division, U.S. Geological Survey
2001, Fact Sheet 037-01
The U.S. Geological Survey recently completed an assessment of undiscovered conventional oil and gas resources in 130 selected petroleum provinces of the world (USGS, 2000). Of these 130 provinces, 23 are in South America, Central America, and the Caribbean area (fig. 1). The assessed provinces range from established petroleum provinces...
U.S. Geological Survey Information Sources
Water Resources Division, U.S. Geological Survey
2001, Fact Sheet 034-01
As the Nation's largest water, earth, and biological science and civilian mapping agency, the U.S. Geological Survey (USGS) works in cooperation with more than 2,000 organizations across the country to provide reliable, impartial scientific information to resource managers, planners, and other customers. This information is gathered in every State by...
Educational materials from the U.S. Geological Survey
Water Resources Division, U.S. Geological Survey
2001, Fact Sheet 044-01
Evaluation of strontium isotopes as a geochemical tracer in the middle Fork Mineral Creek basin, southwestern Colorado
P. L. Verplanck, D.M. Unruh, D.L. Fey
2001, Water-Resources Investigations Report 2000-4290
No abstract available....
Statistical summary of selected physical, chemical, and toxicity characteristics and estimates of annual constituent loads in urban stormwater, Maricopa County, Arizona
Kenneth D. Fossum, Christie M. O’Day, Barbara J. Wilson, Jim E. Monical
2001, Water-Resources Investigations Report 2001-4088
Stormwater and streamflow in Maricopa County were monitored to (1) describe the physical, chemical, and toxicity characteristics of stormwater from areas having different land uses, (2) describe the physical, chemical, and toxicity characteristics of streamflow from areas that receive urban stormwater, and (3) estimate constituent loads in stormwater. Urban stormwater...
Factors affecting reservoir and stream-water quality in the Cambridge, Massachusetts, drinking-water source area and implications for source-water protection
Marcus C. Waldron, Gardner C. Bent
2001, Water-Resources Investigations Report 2000-4262
This report presents the results of a study conducted by the U.S. Geological Survey, in cooperation with the city of Cambridge, Massachusetts, Water Department, to assess reservoir and tributary-stream quality in the Cambridge drinking-water source area, and to use the information gained to help guide the design of a comprehensive...
Availability Of Ground-Water Data For California, Water Year 2000
Julia Huff
2001, Fact Sheet 055-01
The Water Resources Division of the U.S. Geological Survey, in cooperation with Federal, State, and local water agencies, obtains a large amount of data pertaining to the ground-water resources of California each water year. These data constitute a valuable database for developing an improved understanding of the water resources of...
Malformed frogs in Minnesota: An update
Donald O. Rosenberry
2001, Fact Sheet 043-01
No abstract available....
Inventario mundial de la calidad del carbon mineral (WoCQI) [The world coal quality inventory (WoCQI)]
R. B. Finkelman, V.S. Lovern
2001, Fact Sheet 058-01
Los oficiales encargados de la politica comercial de cada pais requieren informacion clara y precisa sobre el recurso del carbon mineral, particularmente sobre sus propiedades y caracteristicas, para tomar decisiones bien fundamentadas con respecto al mejor uso de los recursos naturales, necesidades de importacion y oportunidades de exportacion, objetivos de...
Book review: Simulating ecological and evolutionary systems in C
Donald L. DeAngelis
2001, Bulletin of Mathematical Biology (63) 795-799
Review info: Simulating ecological and evolutionary systems in c. By Will Wilson, 2000. ISBN: 978-0521776585, 320 pp....
Geologic Map of Part of the Uinkaret Volcanic Field, Mohave County, Northwestern Arizona
George H. Billingsley, W. Kenneth Hamblin, Jessica L. Wellmeyer, Stephanie L. Dudash
2001, Miscellaneous Field Studies Map 2368
The geologic map of part of the Uinkaret Volcanic Field is one product of a cooperative project between the U.S. Geological Survey, the National Park Service, and the Bureau of Land Management to provide geologic information about this part of the Grand Canyon-Parashant Canyon National Monument of Arizona. The Uinkaret Volcanic Field is...
Chemical composition of plants growing on the Wooley Valley phosphate mine waste pile and on similar rocks in nearby Dairy Syncline, Caribou County, Southeast Idaho
J. R. Herring, Michael C. Amacher
2001, Open-File Report 2001-25
Documentation and verification of VST2D; a model for simulating transient, Variably Saturated, coupled water-heat-solute Transport in heterogeneous, anisotropic 2-Dimensional, ground-water systems with variable fluid density
Michael J. Friedel
2001, Water-Resources Investigations Report 2000-4105
This report describes a model for simulating transient, Variably Saturated, coupled water-heatsolute Transport in heterogeneous, anisotropic, 2-Dimensional, ground-water systems with variable fluid density (VST2D). VST2D was developed to help understand the effects of natural and anthropogenic factors on quantity and quality of variably saturated ground-water systems. The model solves simultaneously...
Comparison of multi-habitat aquatic macroinvertebrate sampling methods in streams of the Mississippi alluvial plain ecoregion
B. G. Justus, D.G. Bray, A. Dossett, M. Hicks, R. Sarver, M. Rogers
2001, Water-Resources Investigations Report 2000-4216
Geologic Map of the House Rock Quadrangle, Coconino County, Northern Arizona
George H. Billingsley, Jessica L. Wellmeyer, Debra L. Block
2001, Miscellaneous Field Studies Map 2364
This digital map database is compiled from unpublished data and new mapping by the authors, represents the general distribution of surficial and bedrock geology in the mapped area. Together with the accompanying pamphlet, it provides current information on the geologic structure and stratigraphy of the area. The database...
Geologic Map of the Cane Quadrangle, Coconino County, Northern Arizona
George H. Billingsley, Jessica L. Wellmeyer
2001, Miscellaneous Field Studies Map 2366
This digital map database is compiled from unpublished data and new mapping by the authors, represents the general distribution of surficial and bedrock geology in the mapped area. Together with the accompanying pamphlet, it provides current information on the geologic structure and stratigraphy of the area. The database...
Water-level changes in the High Plains Aquifer, 1980 to 1999
Virginia L. McGuire
2001, Fact Sheet 029-01
Lithochronologic units and mineral deposits of the Appalachian Orogen from Maine to Alabama
J. D. Peper, J. E. Gair, M. P. Foose, T. H. Kress, Connie Dicken
2001, Open-File Report 2001-136
A laboratory manual for X-ray powder diffraction
L.J. Poppe, V.F. Paskevich, J.C. Hathaway, D.S. Blackwood
2001, Open-File Report 2001-41
No abstract available....
Benthic habitat and faunal surveys of Closed Area II, central Georges Bank, 1998 and 1999
P. C. Valentine, J.T. Malczyk, T. J. Middleton
2001, Open-File Report 2001-66
