Tertiary cooling and tectonic history of the White River uplift, Gore Range, and western Front Range, central Colorado: Evidence from fission-track and 39Ar/ 40Ar ages
C. W. Naeser, Bruce Bryant, Michael J. Kunk, Karl S. Kellogg, R.A. Donelick, W. J. Perry Jr.
2002, GSA Special Papers (366) 31-53
Apatite fission-track (AFT) data from Proterozoic and Paleozoic rocks in the mountains of north central Colorado (White River Uplift, Gore Range, and western Front Range) record significant cooling that began with uplift and erosion related to the Laramide Orogeny and continued through the Tertiary to Pliocene time. The mountains immediately...
40Ar/39Ar ages of late Cenozoic volcanic rocks within and around the Carbondale and Eagle collapse centers, Colorado: Constraints on the timing of evaporite-related collapse and incision of the Colorado River
Michael J. Kunk, James R. Budahn, D. M. Unruh, Josette O. Stanley, R. M. Kirkham, Bruce Bryant, R. B. Scott, David J. Lidke, R. K. Streufert
2002, GSA Special Papers (366) 213-234
40Ar/ 39Ar dating results of 133 samples from 84 late Cenozoic volcanic rocks provide emplacement ages that constrain the timing of evaporite collapse and the incision rates of the Colorado River. Our samples are from areas in west-central Colorado, both within and outside of the Carbondale and Eagle collapse centers....
Eagle collapse center: Interpretation of evidence for late Cenozoic evaporite-related deformation in the Eagle River basin, Colorado
David J. Lidke, Mark R. Hudson, R. B. Scott, Ralph R. Shroba, Michael J. Kunk, W. J. Perry Jr., R. M. Kirkham, James R. Budahn, R. K. Streufert, J.O. Stanley, B.L. Widmann
2002, GSA Special Papers (366) 101-120
Evaporite tectonism resulted in deformation and collapse over an area of ~2500 km2 that is referred to as the Eagle collapse center. The collapse center includes much of the Eagle and Colorado River drainage basins between Vail, Dotsero, and McCoy, Colorado. The volume loss of evaporitic rocks by dissolution in...
Water quality monitoring and data collection in the Mississippi sound
Michael S. Runner, R. Creswell
2002, Conference Paper, Proceedings of the Gulf and Caribbean Fisheries Institute
The United States Geological Survey and the Mississippi Department of Marine Resources are collecting data on the quality of the water in the Mississippi Sound of the Gulf of Mexico, and streamflow data for its tributaries. The U.S. Geological Survey is collecting...
Catastrophic rockfalls and rockslides in the Sierra Nevada, USA
Gerald F. Wieczorek
2002, Reviews in Engineering Geology (15) 165-190
Despite having a low recorded historical incidence of landsliding, the Sierra Nevada has undergone large prehistoric and historical rockfalls and rockslides that could be potentially catastrophic if they occurred today in the more densely populated parts of the region. Several large documented rockfall and rockslides have been triggered either by...
Hydrogeology of the upper Deschutes Basin, central Oregon; a young basin adjacent to the Cascade volcanic arc
David R. Sherrod, Marshall W. Gannett, George W. Moore
2002, Conference Paper, Field trips to accompany the 98th annual meeting of the Cordilleran Section of the Geological Society of America, 2002
no abstract available. ...
Exposure of delta smelt to dissolved pesticides in 2000
Kathryn Kuivila, G. Edward Moon
2002, Interagency Ecological Program Newsletter (15) 42-45
Delta smelt abundance in San Francisco Estuary has been declining since 1983. The exposure of delta smelt to toxic pesticides during larval and juvenile life stages may be one possible factor of this decline (Bennett and Moyle 1996; Moyle and others 1996). Although pesticides have been detected in the Delta...
Ordonezite from the Theodoso Soto Mine, Sapioris, Durango, Mexico: New data and structure refinement
T.S. Ercit, E.E. Foord, J. J. Fitzpatrick
2002, Canadian Mineralogist (40) 1207-1210
A new occurrence of the rare mineral species ordonezite has been found at the Theodoso Soto tin mine, near Sapioris, Durango, Mexico. The average composition of the samples is (Zn0.98Fe0.02)Σ1.00Sb2.00O6; the core of the crystals is slightly richer in Fe than the rim. The mineral is uniaxial (+), with all...
Marine predator surveys in Glacier Bay National Park and Preserve
James L. Bodkin, Kimberly A. Kloecker, Heather A. Coletti, George G. Esslinger, Daniel H. Monson, Brenda E. Ballachey
2002, Report
Since 1999, vessel based surveys to estimate species composition, distribution and relative abundance of marine birds and mammals have been conducted along coastal and pelagic (offshore) transects in Glacier Bay, Alaska. Surveys have been conducted during winter (November-March) and summer (June). This annual report presents the results of those surveys...
Structural architecture of the central Brooks Range foothills, Alaska
Thomas E. Moore, Christopher J. Potter, Paul B. O'Sullivan
2002, AAPG Bulletin (86) 1153-1153
Five structural levels underlie the Brooks Range foothills, from lowest to highest: (1) autochthon, at a depth of ~9 km; (2) Endicott Mountains allochthon (EMA), thickest under the northern Brooks Range (>15 km) and wedging out northward above the autochthon; (3) higher allochthons (HA), with a composite thickness of 1.5+...
Lithofacies and stratigraphy of the Lisburne and Etivluk groups in the Lisburne 1 well and adjacent outcrops
Julie A. Dumoulin, Kenneth J. Bird
2002, AAPG Bulletin (86) 1142-1142
The Lisburne 1 well in the thrust belt of the central Brooks Range penetrated 17,000 ft of imbricated, chiefly Ellesmerian sequence strata in the Endicott Mountains allochthon. Five thrust repeats of the Lisburne Group (Carboniferous) and overlying Etivluk Group (Permian-Jurassic) were drilled. Lithofacies analyses of >350 thin sections of cores...
Seasonal reproductive cycles for Florida largemouth bass
Timothy S. Gross, Maria S. Sepulveda, Carla M. Wieser, Jon J. Wiebe, Trenton R. Schoeb, Nancy D. Denslow, William E. Johnson
2002, Conference Paper, Black Bass: Ecology, Conservation, and Management: Proceedings of the Symposium Black Bass 2000: Ecology Conservation and Management of Black Bass in North America, Held at St. Louis, Missouri, USA, 21-24 August 2000
Assessing the reliability of physico-chemical property data (Kow, Sw) for hydrophobic organic compounds: DDT and DDE as a case study
Robert P. Eganhouse, James Pontolillo
2002, SETAC Globe (3) 34-35
No abstract available....
Stormflow-hydrograph separation based on isotopes: the thrill is gone--what's next?
Douglas A. Burns
2002, Hydrological Processes (16) 1515-1517
Beginning in the 1970s, the promise of a new method for separatingstormflow hydrographs...
Bayesian time series analysis of segments of the Rocky Mountain trumpeter swan population
Christopher K. Wright, Richard S. Sojda, Daniel Goodman
2002, Waterbirds (25) 319-326
A Bayesian time series analysis technique, the dynamic linear model, was used to analyze counts of Trumpeter Swans (Cygnus buccinator) summering in Idaho, Montana, and Wyoming from 1931 to 2000. For the Yellowstone National Park segment of white birds (sub-adults and adults combined) the estimated probability of a positive growth...
Real-time kinematic surveying at the Osage-Skiatook Petroleum Environmental Research sites, Osage County, Oklahoma
Marvin M. Abbott
2002, Conference Paper, 9th International Petroleum Environmental Conference
Highly accurate survey-grade Global Positioning System (GPS) technology was used at the two Osage-Skiatook petroleum environmental research sites to document the locations of observation wells, geoprobe holes, and other sampling sites of 15 research scientists. Real-time kinematic (RTK) GPS was the method used, because it is stable, fast, and accurate.Initially...
Environmental impacts of petroleum production: The fate of petroleum and other organics associated with produced water from the Osage-Skiatook Petroleum Environmental Research sites, Osage County, OK
Frances D. Hostettler, Yousif K. Kharaka, Edward M. Godsy
2002, Conference Paper, 9th International Petroleum Environmental Conference
We are involved in a multidisciplinary investigation to study the transport, fate, and natural attenuation of inorganic salts, trace metals, radionuclides and organic compounds present in produced water, and their impacts on soil, surface and ground water and the local ecosystem at the Osage-Skiatook Petroleum Environmental Research (OSPER) A and...
Fuzzy logic merger of spectral and ecological information for improved montane forest mapping.
Joseph D. White, Steven W. Running, Kevin C. Ryan, Carl H. Key
2002, Geocarto International (17) 61-68
Environmental data are often utilized to guide interpretation of spectral information based on context, however, these are also important in deriving vegetation maps themselves, especially where ecological information can be mapped spatially. A vegetation classification procedure is presented which combines a classification of spectral data from Landsat‐5 Thematic Mapper (TM)...
Hydrologic controls on the subsurface transport of oil-field brine at the Osage-Skiatook Petroleum Environmental Research (OSPER) B Site, Oklahoma
William N. Herkelrath, Yousif K. Kharaka
2002, Conference Paper, 9th International Petroleum Environmental Conference
As a part of a multidisciplinary study of the impact of oil wells and oil production on the environment, we are investigating the hydrology of the OSPER B site, which is located at Skiatook Lake in Osage County, Oklahoma. Salt and crude oil from oil well brine pits and accidental...
Characterization of soils and rock at an active oil production site: Effects of brine and hydrocarbon contamination
Cynthia A. Rice, James D. Cathcart, Robert A. Zielinski, James K. Otton
2002, Conference Paper, 9th International Petroleum Environmental Conference
An active oil production site (Osage-Skiatook petroleum environmental research Site B) in Osage County, Oklahoma is under study to determine the impacts on soils and rock of brine and hydrocarbon spills. The goals of the soil and rock characterization are to 1) document and identify the type, degree, and areal...
Impact of oil production releases on soil chemical properties at the Osage-Skiatook Petroleum Environmental Research Project Site
Don H. Kampbell, Youn-Joo An, Wendy G. Kirby, Marvin M. Abbott
2002, Conference Paper, 9th International Petroleum Environmental Conference
A site characterization study was conducted at an old oil production area where highest activity occurred during the 1930's. Two site locations referred to as OSPER are along the shoreline of Skiatook Lake northwest of Tulsa, Oklahoma. Crude oil and brine water releases have impacted soils, surface and ground water,...
Geodynamo
Jeffrey J. Love
2002, Book chapter, McGraw-Hill Encyclopedia of Science & Technology
No abstract available....
Preliminary geophysical characterization of two oil production sites, Osage County, Oklahoma - Osage Skiatook Petroleum Environmental Research Project
Bruce D. Smith, Robert J. Bisdorf, Robert Horton, James K. Otton, Raymond S. Hutton
2002, Conference Paper, 9th International Petroleum Environmental Conference
Ground electromagnetic and dc resistivity geophysical surveys were used to interpret the subsurface distribution of salinized soil, water, and bedrock at two sites (A and B) and to characterize the larger scale hydrologic setting. Measurements were made on grids of about 1000 square meters using a very shallow penetrating (less...
Transforming the Rockies: Human forces, settlement patterns, and ecosystem effects
William R. Travis, David M. Theobald, Daniel B. Fagre
Jill Baron, editor(s)
2002, Book chapter, Rocky Mountain futures: An ecological perspective
The current ecological condition of the Rocky Mountains can be viewed from two somewhat opposing perspectives. The first is that human occupation has had relatively little effect on the Rockies: large natural, if not pristine, areas remain, and the region's open spaces provide wildlife habitat, majestic scenery, and a sense...
Regional structural framework and petroleum assessment of the Brooks Range foothills and southern coastal plain, National Petroleum Reserve, Alaska
Christopher J. Potter, Thomas E. Moore, Paul B. O'Sullivan, John J. Miller
2002, AAPG Bulletin (86) 1157-1157
New interpretations of the frontal part of the Brooks Range orogen beneath the foothills and coastal plain in the National Petroleum Reserve-Alaska (NPRA) are based on reprocessed regional seismic reflection data, recent geologic field observations, and new apatite fission-track analyses. Three long north-south transects illustrate the configuration of thrust faulting...
