Sediment deposition and occurrence of selected nutrients and other chemical constituents in bottom sediment, Tuttle Creek Lake, Northeast Kansas, 1962–99
Kyle E. Juracek, David P. Mau
2002, Water-Resources Investigations Report 2002-4048
A combination of bathymetric surveying and bottom-sediment coring was used to investigate sediment deposition and the occurrence of selected nutrients (total ammonia plus organic nitrogen and total phosphorus), 44 metals and trace elements, 15 organochlorine compounds, and 1 radionuclide in bottom sediment of Tuttle Creek Lake, northeast Kansas. The total...
Ground-water quality in the West Salt River Valley, Arizona, 1996–98 — Relations to hydrogeology, water use, and land use
Robert J. Edmonds, Dorinda J. Gellenbeck
2002, Water-Resources Investigations Report 2001-4126
The U.S. Geological Survey collected and analyzed ground-water samples in the West Salt River Valley from 64 existing wells selected by a stratified-random procedure. Samples from an areally distributed group of 35 of these wells were used to characterize overall ground-water quality in the basin-fill aquifer. Analytes included the principal...
Microphytobenthos potential productivity estimated in three tidal embayments of the San Francisco Bay system
Jean-Marc Guarini, James E. Cloern, Jody L. Edmunds, Philippe Gros
2002, Estuaries (25) 409-417
In this paper we describe a three-step procedure to infer the spatial heterogeneity in microphytobenthos primary productivity at the scale of tidal estuaries and embayments. The first step involves local measurement of the carbon assimilation rate of benthic microalgae to determine the parameters of the photosynthesis-irradiance (P-E) curves (using non-linear...
Progress on geoenvironmental models for selected mineral deposit types
Robert R. Seal, II, Nora K. Foley, editor(s)
2002, Open-File Report 2002-195
Since the beginning of economic geology as a subdiscipline of the geological sciences, economic geologists have tended to classify mineral deposits on the basis of geological, mineralogical, and geochemical criteria, in efforts to systematize our understanding of mineral deposits as an aid to exploration. These efforts have led to classifications...
Data on occurrence of selected trace metals, organochlorines, and semivolatile organic compounds in edible fish tissues from Lake Worth, Fort Worth, Texas, 1999
J. Bruce Moring
2002, Open-File Report 2002-16
A public-health assessment conducted for the Texas Department of Health and the Agency for Toxic Substances and Disease Registry concluded that exposure to contaminants through the aquatic food chain is an indeterminate human-health hazard in Lake Worth, Fort Worth, Texas. In 1999, the U.S. Geological Survey, in cooperation with the...
Geologic map of MTM -40252 and -40257 quadrangles, Reull Vallis region of Mars
Scott C. Mest, David A. Crown
2002, IMAP 2730
Mars Transverse Mercator (MTM) quadrangles -40252 and -40257 cover a portion of the highlands of Promethei Terra northeast of the Hellas basin. The map area consists of heavily cratered ancient highland materials of moderate to high relief, isolated knobs and massifs of rugged mountainous materials, extensive tracts of smooth and...
Geologic map transecting the highland/lowland boundary zone, Arabia Terra, Mars; quadrangles 30332, 35332, 40332, and 45332
George E. McGill
2002, IMAP 2746
Arabia Terra is a large region of cratered terrane extending from about 20° W. longitude eastward across the prime meridian to about 300° W. longitude for an average east-west width of about 5,000 km. The northern boundary ranges from 40° N. to 45° N.; the southern boundary is a poorly...
Reconnaissance study of the geology of U.S. vermiculite deposits: Are asbestos minerals common constituents?
Bradley S. Van Gosen, Heather Lowers, Alfred L. Bush, Gregory P. Meeker, Geoffrey S. Plumlee, Isabelle K. Brownfield, Stephen J. Sutley
2002, Bulletin 2192
Unusually high incidences of asbestos-related mortality and respiratory disease in the small town of Libby, Montana, have been linked to amphibole mineral fibers intergrown with the vermiculite deposits mined and milled near the town from 1923 to 1990. A study conducted by the U.S. Agency for Toxic Substances and Disease...
Composition, age, and petrogenesis of Late Cretaceous intrusive rocks in the central Big Belt Mountains, Broadwater and Meagher counties, Montana
E. A. Du Bray, L.W. Snee
2002, Professional Paper 1657
Cretaceous intrusions hosted by the Proterozoic Newland Formation. The northern intrusion, centered on Boulder Baldy, consists of outer, intermediate, and core zones composed of aegirine-augite quartz monzonite, hornblende quartz monzodiorite, and biotite granodiorite, respectively. The southern intrusion, north of Mount Edith, is compositionally indistinguishable from the intermediate zone of the...
Environmental atlas of the Lake Pontchartrain Basin
Andrew Beall, Jack Kindinger
Shea Penland, editor(s)
2002, Open-File Report 2002-206
Occurrence and distribution of pesticides and volatile organic compounds in ground water and surface water in Central Arizona Basins, 1996-98, and their relation to land use
Dorinda J. Gellenbeck, David W. Anning
2002, Water-Resources Investigations Report 2001-4144
Samples of ground water and surface water from the Sierra Vista subbasin, the Upper Santa Cruz Basin, and the West Salt River Valley were collected and analyzed to determine the occurrence and distribution of pesticides and volatile organic compounds in central Arizona. The study was done during 1996-98 within the...
Abstracts of the annual Planetary Geologic Mappers Meeting, June 18-19, 2001, Albuquerque, New Mexico
Kenneth L. Tanaka, David A. Senske
Thomas J. Parker, editor(s)
2002, Open-File Report 2002-78
The annual Planetary Geologic Mappers Meeting serves two purposes. In addition to giving mappers the opportunity to exchange ideas, experiences, victories, and problems with others, presentations are reviewed by the Geologic Mapping Subcommittee (GeMS) to provide input to the Planetary Geology and Geophysics Mapping Program review panel’s consideration of new...
Geologic Map of the Sheep Hole Mountains 30' x 60' Quadrangle, San Bernardino and Riverside Counties, California
Keith A. Howard
2002, Miscellaneous Field Studies Map 2344
This data set describes and maps the geology of the Sheep Hole Mountains 30' x 60' quadrangle in southern California. The quadrangle covers an area of the Mojave Desert characterized by desert ranges separated by broad basins. Ranges include parts of the Old Woman, Ship, Iron, Coxcomb, Pinto, Bullion, and...
User's guide to HYPOINVERSE-2000, a Fortran program to solve for earthquake locations and magnitudes
Fred W. Klein
2002, Open-File Report 2002-171
Hypoinverse is a computer program that processes files of seismic station data for an earthquake (like p wave arrival times and seismogram amplitudes and durations) into earthquake locations and magnitudes. It is one of a long line of similar USGS programs including HYPOLAYR (Eaton, 1969), HYPO71 (Lee and Lahr, 1972),...
Molybdenum recycling in the United States in 1998
John W. Blossom
2002, Open-File Report 2002-165
This report describes the flow of molybdenum in the United States in 1998 with emphasis on the extent to which molybdenum was recycled. Molybdenum was mostly recycled from products of molybdenum-bearing steels and superalloys, with some molybdenum products recovered specifically for their high molybdenum content. In 1998, 8,000 metric tons...
Quality of economically extractable coal beds in the Gillette coal field as compared with other Tertiary coal beds in the Powder River basin, Wyoming and Montana
Margaret S. Ellis
2002, Open-File Report 2002-174
The Powder River Basin, and specifically the Gillette coal field, contains large quantities of economically extractable coal resources. These coal resources have low total sulfur content and ash yield, and most of the resources are subbituminous in rank. A recent U.S Geological Survey study of economically extractable coal in the...
Asbestos: Geology, Mineralogy, Mining, and Uses
Robert L. Virta
2002, Open-File Report 2002-149
The term asbestos is a generic designation referring usually to six types of naturally occurring mineral fibers that are or have been commercially exploited. These fibers belong to two mineral groups: serpentines and amphiboles. The serpentine group contains a single asbestiform variety: chrysotile; five asbestiform varieties of amphiboles are known:...
Influence of natural organic matter on the adsorption of metal ion onto clay particles
D. Schmitt, Howard E. Taylor, G. R. Aiken, D.A. Roth, F.H. Frimmel
2002, Environmental Science & Technology (36) 2932-2938
The influence of natural organic matter (NOM) on the adsorption of Al, Fe, Zn, and Pb onto clay minerals was investigated. Adsorption experiments were carried out at pH = 5 and pH = 7 in the presence and absence of NOM. In general, the presence of NOM decreased the adsorption...
Effects of flow on the fish communities of a regulated California river: Implications for managing native fishes
Larry R. Brown, Tim Ford
2002, River Research and Applications (18) 331-342
We assessed the importance of flow regime to the success of native and non‐native fish species by analysing winter/spring seining data collected from 1987 to 1997 on the resident fish communities of the lower Tuolumne River, California. The data were analysed using regression models to predict the percentage of non‐native...
An ENSO predictor of dust emission in the southwestern United States
Gregory S Okin, Marith C. Reheis
2002, Geophysical Research Letters (29) 46-1-46-3
Here we show that there is a significant relationship between Nino 3.4 ENSO anomaly (Dec–Jan average) and precipitation in the southwestern United States. This contributes to increased frequency of dust events in the years following strong La Niña and El Niño years. High probabilities (60%–100%) exist for...
A Geochemical Trophic Cascade in Yellowstone's Geothermal Environments
R.A. Garrott, L. E. Eberhardt, James K. Otton, P.J. White, Maurice A. Chaffee
2002, Ecosystems (5) 659-666
We contrast the geochemistry of the Madison drainage, which has high concentrations of geothermal features, with the Lamar drainage of Yellowstone National Park, USA, and trace the consequences of geochemical differences through abiotic and biotic linkages in the ecosystem. Waters in the geothermal-dominated drainage contained anomalously high levels of fluoride...
New insights on timing of oil and gas generation in the central Gulf Coast interior zone based on hydrous-pyrolysis kinetic parameters
Michael D. Lewan, Shirley P. Dutton, Stephen C. Ruppel, Tucker F. Hentz
2002, Conference Paper
Timing of oil and gas generation from Turonian and Smackover source rocks in the central Gulf CoastInterior Zone was determined in one-dimensional burial-history curves (BHCs) using hydrous-pyrolysis kinetic parameters. The results predict that basal Smackover source-rock...
Use of fallout radioisotopes to estimate sources of suspended sediment to the Wild Rice River, northwestern Minnesota, 1998
M. E. Brigham, Carolyn J. McCullough, P. Wilkinson
2002, Conference Paper
No abstract available....
Methylmercury in diverse surface waters of Minnesota and Wisconsin
M. E. Brigham
2002, Conference Paper
No abstract available....
Trace elements in streambed sediments of the St. Croix River Basin, 2000
M. E. Brigham
2002, Conference Paper
No abstract available....
