Principal facts for 463 gravity stations in the vicinity of Tangle Lakes, east-central Alaska
Robert L. Morin, Jonathan M. G. Glen
2002, Open-File Report 2002-96
During the summer of 2001, a gravity survey was conducted in the vicinity of Tangle Lakes, east-central Alaska. Measurements of 87 gravity stations were made. The Tangle Lakes area is located about 25 km west of Paxson and north of the Denali Highway. The gravity survey is located on the...
Pesticides in surface water of the Yakima River basin, Washington, 1999–2000 — Their occurrence and an assessment of factors affecting concentrations and loads
James C. Ebbert, Sandra S. Embrey
2002, Water-Resources Investigations Report 2001-4211
The occurrence, distribution, and transport of pesticides in surface water of the Yakima River Basin were assessed using data collected during 19992000 as part of the U.S. Geological Survey National Water-Quality Assessment (NAWQA) Program. Samples were collected at 34 sites located throughout the basin in August 1999 using a Lagrangian...
Modified Mercalli Intensities (MMI) for some earthquakes in eastern North America (ENA) and empirical MMI site corrections for towns in ENA
W. H. Bakun, A. C. Johnston, M. G. Hopper
2002, Open-File Report 2002-109
Modified Mercalli Intensity (MMI) assignments for earthquakes in eastern North America (ENA) were used by Bakun et al. (submitted) to develop a model for eastern North America for estimating the location and moment magnitude M of earthquakes from MMI observations. MMI assignments for most of the earthquakes considered by Bakun...
Structural geology of western part of Lemhi Range, east-central Idaho
Russell G. Tysdal
2002, Professional Paper 1659
The Poison Creek Anticline is a major fold that occupies a large part of the western part of the Lemhi Range. The fold is now broken by normal faults, but removal of displacement on the normal faults permitted reconstruction of the anticline. The fold formed during late Mesozoic compressional deformation...
An interpretation of the 1996 aeromagnetic data for the Santa Cruz basin, Tumacacori Mountains, Santa Rita Mountains, and Patagonia Mountains, south-central Arizona
Mark E. Gettings
2002, Open-File Report 2002-99
High resolution aeromagnetic survey data flown at 250 m above the terrain and 250 m line spacing over the Santa Cruz Valley and the surrounding Tumacacori, Patagonia, and Santa Rita Mountains has been interpreted by correlation of the magnetic anomaly field and various derivative maps with geologic maps. Measurements of...
A logistic regression equation for estimating the probability of a stream flowing perennially in Massachusetts
Gardner C. Bent, Stacey A. Archfield
2002, Water-Resources Investigations Report 2002-4043
A logistic regression equation was developed for estimating the probability of a stream flowing perennially at a specific site in Massachusetts. The equation provides city and town conservation commissions and the Massachusetts Department of Environmental Protection with an additional method for assessing whether streams are perennial or intermittent at a...
Field-trip guide to the southeastern foothills of the Santa Cruz Mountains in Santa Clara County, California
Philip W. Stoffer, Paula Messina
2002, Open-File Report 2002-121
This field trip is an introduction to the geology of the southeastern foothills of the Santa Cruz Mountains in southern Santa Clara County. Seven stops include four short hikes to access rock exposures and views of the foothills east of Loma Prieta Peak between Gilroy and San José. Field-trip destinations...
Whole-rock and glass major-element geochemistry of Kilauea Volcano, Hawaii, near-vent eruptive products: September 1994 through September 2001
Carl R. Thornber, David R. Sherrod, David F. Siems, Christina C. Heliker, Gregory P. Meeker, Robert L. Oscarson, James P. Kauahikaua
2002, Open-File Report 2002-17
This report presents major-element geochemical data for glasses and whole-rock aliquots among 523 lava samples collected near the vent on Kilauea's east rift zone between September 1994 and October 2001. Information on sample collection, analysis techniques and analytical standard reproducibility are presented as a PDF file, which also includes a...
Mapped minerals at Questa, New Mexico, using airborne visible-infrared imaging spectrometer (AVIRIS) data – Preliminary report for: First quarterly report of the U.S. Geological Survey investigation of baseline and pre-mining ground-water quality in the Red River Valley Basin, New Mexico, November 13, 2001
K. Eric Livo, Roger N. Clark
2002, Open-File Report 2002-26
This preliminary study for the First Quarterly Report has spectrally mapped hydrothermally altered minerals useful in assisting in assessment of water quality of the Red River. Airborne Visible-Infrared Imaging Spectrometer (AVIRIS) data was analyzed to characterize mined and unmined ground at Questa, New Mexico. AVIRIS data covers the Red River...
Rocky Mountain snowpack chemistry network: History, methods, and the importance of monitoring mountain ecosystems
George P. Ingersoll, John T. Turk, M. Alisa Mast, David W. Clow, Donald H. Campbell, Zelda C. Bailey
2002, Open-File Report 2001-466
Because regional-scale atmospheric deposition data in the Rocky Mountains are sparse, a program was designed by the U.S. Geological Survey to more thoroughly determine the quality of precipitation and to identify sources of atmospherically deposited pollution in a network of high-elevation sites. Depth-integrated samples of seasonal snowpacks at 52 sampling...
Mitochondrial phylogeography of moose (Alces alces): Late Pleistocene divergence and population expansion
Kris J. Hundertmark, Gerald F. Shields, Irina G. Udina, R. Terry Bowyer, Alexei A. Danilkin, Charles C. Schwartz
2002, Molecular Phylogenetics and Evolution (22) 375-387
We examined phylogeographic relationships of moose (Alces alces) worldwide to test the proposed existence of two geographic races and to infer the timing and extent of demographic processes underpinning the expansion of this species across the Northern Hemisphere in the late Pleistocene. Sequence variation within the left hypervariable domain of...
Is there a basin-centered gas accumulation in Cotton Valley group sandstones, Gulf Coast basin, U.S.A.?
Charles E. Bartberger, Thaddeus S. Dyman, Steven M. Condon
2002, Bulletin 2184-D
The U.S. Geological Survey (USGS), in cooperation with the U.S. Department of Energy, is reevaluating the resource potential of selected domestic basin-centered gas accumulations. Basin-centered gas accumulations are characterized by presence of gas in extensive low-permeability (tight) reservoirs in which conventional seals and trapping mechanisms are absent, abnormally high or...
Regional stratigraphic cross sections of Cretaceous rocks from east-central Arizona to the Oklahoma Panhandle
C. M. Molenaar, W. A. Cobban, E.A. Merewether, C. L. Pillmore, D.G. Wolfe, J.M. Holbrook
2002, Miscellaneous Field Studies Map 2382
Sedimentary rocks of Cretaceous age along Transect DD'' in eastern Arizona, northern New Mexico, southern Colorado, and western Oklahoma consist mainly of sandstone, siltstone, shale, limestone, and bentonite. They accumulated as sediments in continental, nearshore marine, and offshore marine environments on the west side of a north-trending epicontinental sea. The...
Geologic map of the Tetilla Peak Quadrangle, Santa Fe and Sandoval counties, New Mexico
D.A. Sawyer, R. R. Shroba, S.A. Minor, R. A. Thompson
2002, Miscellaneous Field Studies Map 2352
This digital geologic map summarizes all available geologic information for the Tetilla Peak quadrangle located immediately southwest of Santa Fe, New Mexico. The geologic map consists of new polygon (geologic map units) and line (contact, fault, fold axis, dike, flow contact, hachure) data, as well as point data (locations...
Case study of the environmental signature of a recently abandoned, carbonate-hosted replacement deposit: The Clayton Mine, Idaho
J. M. Hammarstrom, R. G. Eppinger, B.S. Gosen, Paul H. Briggs, A. L. Meier
2002, Open-File Report 2002-10
No abstract available....
Correlation of late Cenozoic basaltic lava flows in the Carbondale and Eagle collapse centers in west-central Colorado based on geochemical, isotopic, age, and petrographic data
James R. Budahn, D. M. Unruh, Michael J. Kunk, Frank M. Byers Jr., R. M. Kirkham, R. K. Streufert
2002, GSA Special Papers (366) 167-196
Major-, minor-, and trace-element abundance data on 220, late Cenozoic, basaltic rocks in and around the Carbondale and Eagle collapse centers in west-central Colorado are combined with isotopic, age, and petrographic data to correlate lava flows and establish the timing and minimum areal extent of collapse events associated with removal...
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...
Palynology of Eocene strata in the Sagavanirktok and Canning Formations on the North Slope of Alaska
Norman O. Frederiksen, Lucy E. Edwards, Thomas A. Ager, Thomas P. Sheehan
2002, Palynology (26) 59-93
This paper describes, illustrates, and interprets Eocene palynomorph assemblages from the North Slope of Alaska, mainly from 31 outcrop samples from seven stratigraphic sections at Franklin Bluffs on the Sagavanirktok River. The top of the Sagwon Member of the Sagavanirktok Formation is shown to be a thin, coaly, apparently nonmarine...
Paleoenvironments of sedimentary interbeds in the Pliocene and Quaternary Big Lost Trough, eastern Snake River Plain, Idaho
Erick A. Bestland, Paul K. Link, Marvin A. Lanphere, Duane E. Champion
2002, Book chapter, Geology, hydrogeology, and environmental remediation: Idaho National Engineering and Environmental Laboratory, eastern Snake River plain, Idaho
No abstract available....
Accumulation and subsidence of the Pleistocene basaltic lava flows of the eastern Snake River Plain, Idaho
Duane E. Champion, Marvin A. Lanphere, Steven R. Anderson, Mel A. Kuntz
2002, Book chapter, Geology, hydrogeology, and environmental remediation: Idaho National Engineering and Environmental Laboratory, eastern Snake River plain, Idaho
No abstract available....
The central arctic caribou herd
Raymond D. Cameron, Walter T. Smith, Robert G. White, Brad Griffith
David C. Douglas, Patricia E. Reynolds, E. B. Rhode, editor(s)
2002, Biological Science Report 2002-0001-4
From the mid-1970s through the mid-1980s, use of calving and summer habitats by Central Arctic herd caribou (Rangifer tarandus granti) declined near petroleum development infrastructure on Alaska's arctic coastal plain (Cameron et al. 1979; Cameron and Whitten 1980, Smith and Cameron 1983. Whitten and Cameron 1983a, 1985: Dau and Cameron...
Effects of fire and post-fire salvage logging on avian communities in conifer-dominated forests of the western United States
N.B. Kotliar, S.J. Hejl, R.L. Hutto, V. Saab, Cynthia Melcher, M.E. McFadzen
T.L. George, D.S. Dobkin, editor(s)
2002, Book chapter, Effects of habitat fragmentation on birds in western landscapes: contrasts with paradigms from the eastern United States (Studies in Avian Biology No. 25)
Historically, fire was one of the most widespread natural disturbances in the western United States. More recently, however, significant anthropogenic activities, especially fire suppression and silvicultural practices, have altered fire regimes; as a result, landscapes and associated communities have changed as well. Herein, we review current knowledge of how fire...
Predators
Donald D. Young, Thomas R. McCabe, Robert E. Ambrose, Gerald W. Garner, Greg J. Weiler, Harry V. Reynolds, Mark S. Udevitz, Dan J. Reed, Brad Griffith
David C. Douglas, Patricia E. Reynolds, E. B. Rhode, editor(s)
2002, Biological Science Report 2002-0001-6
Calving caribou (Rangifer tarandus) of the Central Arctic herd, Alaska, have avoided the infrastructure associated with the complex of petroleum development areas from Prudhoe Bay to Kuparuk (Cameron et al. 1992, Nellemann and Cameron 1998, and Section 4 of this document). Calving females of the Porcupine caribou herd may similarly...
