Relations between benthic community structure and metals concentrations in aquatic macroinvertebrates: Clark Fork River, Montana
1995, Journal of Freshwater Ecology (10) 277-293
We sampled macroinvertebrate communities at six sites on the upper Clark Fork River, Montana, to determine relations between macroinvertebrate community structure and metals in invertebrates and the best benthic community metrics to use for ranking sites based on the relative severity of the effects of metals. Concentrations (μg/g) of six...
GAP Analysis Bulletin Number 4
Water Resources Division, U.S. Geological Survey
1995, GAP Bulletin 4
The Lake Pontchartrain Basin: Louisiana's troubled urban estuary
S. Jeffress Williams
1995, Report
Rules for success in environmental negotiations
J. G. Taylor, N. Burkardt, B. L. Lamb
1995, Conference Paper, Waterpower '95, Proceedings of the International Conference on Hydropower
Scientists at the Mid-Continent Ecological Science Center of the National Biological Service conducted a series of case studies of Federal Energy Regulatory Commission license consultations. The goal of these studies was to test hypotheses about factors that contribute to success in interagency negotiations. Based on their analysis of six case...
Continental drilling for paleoclimatic records: Recommendations from an international workshop
Steve M. Colman, editor(s)
1995, Report
The Workshop, entitled "Continental Drilling for Paleoclimate Records", was sponsored by the Past Global Changes (PAGES) Project, a core project of the International Geosphere-Biosphere Programme (IGBP) and by the GeoForschungsZentrum, Potsdam, Germany, in conjunction with the International Continental Drilling Programme (ICDP). The impetus for the meeting was the need for...
The importance of geology in understanding and remediating environmental problems at Summitville
Geoffrey S. Plumlee, John E. Gray, M. M. Roeber Jr, Mark F. Coolbaugh, Marta J. Flohr, Gene Whitney
1995, Book chapter, Proceedings: Summitville Forum '95
No abstract available. ...
Rapid extension recorded by cooling‐age patterns and brittle deformation, Naxos, Greece
B.E. John, Keith A. Howard
1995, Journal of Geophysical Research B: Solid Earth (100) 9969-9979
The metamorphic core complex exposed as the island of Naxos in the Aegean Sea records an unusually complete sequence of structures developed as a result of continental extension. The structures formed during Miocene rise and cooling from ductile, upper amphibolite facies and anatectic conditions to brittle near‐surface conditions beneath the...
Estimates of self-supplied commercial ground-water use in rural east-central Minnesota
L. C. Trotta
1995, Minnesota Ground Water Association Newsletter (13) 8
No abstract available....
Compositional variations on the Moon: Recalibration of Galileo solid‐state imaging data for the Orientale region and farside
Lisa R. Gaddis, Alfred S. McEwen, Tammy L. Becker
1995, Journal of Geophysical Research: Planets (100) 26345-26355
Updated radiometric calibration and systematic processing procedures for Galileo solid‐state imaging (SSI) data from the first (1990) Earth‐Moon encounter are presented. These procedures were applied to a whole‐disk imaging sequence of the Moon centered near Mare Orientale, called Lunmap 14 (L14). Processing of L14 data included radiometric calibration, subpixel coregistration,...
Uraniferous waters of the Arkansas River valley, Colorado, U.S.A.: A function of geology and land use
Robert A. Zielinski, Sigrid Asher-Bolinder , A. L. Meier
1995, Applied Geochemistry (10) 133-144
The effect of local geology and land-use practices on dissolved U was investigated by analysis of surface water and some springs in the Arkansas River valley of southeastern Colorado. Water samples were collected during a 2 week period in April, 1991. The...
Comparison of BASS and VACM current measurements during STRESS
Steven J. Lentz, Bradford Butman, A. J. Williams III
1995, Journal of Atmospheric and Oceanic Technology (12) 1328-1337
Current measurements from a vector-averaging current meter (VACM) on a subsurface mooring and a benthic acoustic stress sensor (BASS) on a bottom tripod are compared to assess their relative accuracy. The instruments were deployed off northern California at a midshelf site (water depth approximately 90 m) as part of the...
Bluegill sunfish (Lepomis macrochirus) foraging behavior under temporally varying food conditions
Mark L. Wildhaber, Larry B. Crowder
1995, Copeia (4) 891-899
Assimilation of trace elements ingested by the mussel Mytilus edulis: Effects of algal food abundance
W.-X. Wang, N.S. Fisher, S. N. Luoma
1995, Marine Ecology Progress Series (129) 165-176
Pulse-chase feeding and multi-labeled radiotracer techniques were employed to measure the assimilation of 6 trace elements (110mAg, 241Am, 109Cd, 57Co, 75Se and 65Zn) from ingested diatoms in the mussel Mytilus edulis feeding at different rates (0.1, 0.49 and 1.5 mg dry wt h-1). Uniformly radiolabeled diatoms Thalassiosira pseudonana were...
Improved stability of a deeply anchored geodetic monument for deformation monitoring
John O. Langbein, Frank Wyatt, Hadley O. Johnson, Duane Hamann, Paul Zimmer
1995, Geophysical Research Letters (22) 3533-3536
A test of two different monument designs used in geodetic networks shows that monuments installed to depths of 5 to 10 meters, and laterally braced, exhibit less environmentally caused displacement than those installed to 2 meters depth. At Parkfield, California, we have been monitoring the lengths of 17 baselines over...
Beyond the petroleum system: GEOHORIZONS
Leslie B. Magoon, R. M. O. Sanchez
1995, American Association of Petroleum Geologists Bulletin (79) 1731-1736
The first joint AAPG/AMGP (Association of Mexican Petroleum Geologists) Hedberg Conference on “Geologic Aspects of Petroleum Systems” was held October 2–6, 1994, in Mexico City, Mexico. This research conference attracted nearly 150 geoscientists from 15 countries; 41 papers and 27 posters were presented. The opposite response occurred when the petroleum-system...
Alteration of basalt hyaloclastite at the off-axis Sea Cliff hydrothermal field, Gorda Ridge
R.A. Zierenberg, Peter Schiffmant, I. Jonasson, R. M. Tosdal, W. Pickthorn, J. McClain
1995, Chemical Geology (126) 77-99
The Sea Cliff hydrothermal field on the northern segment of the Gorda Ridge is situated along a rift-bounding normal fault about 2.6 km east of the neovolcanic zone and approximately 300 m above the spreading axis. The structural setting of this hydrothermal field differs from that of most other active...
Strain accumulation across the central Nevada seismic zone, 1973–1994
James C. Savage, Michael Lisowski, W.K. Gross
1995, Journal of Geophysical Research B: Solid Earth (100) 20257-20269
Five trilateration networks extending for 280 km along the central Nevada seismic zone (1915 Pleasant Valley, M = 7.3; 1954 Dixie Valley, M = 6.8; 1954 Stillwater, M = 6.8; 1954 Rainbow Mountain, M = 6.6; 1954 Fairview Peak, M = 7.1; and 1932 Cedar Mountain, M = 7.2) have been surveyed 6 times since 1973 to determine deformation along the zone....
Changes in long‐term extension rates associated with the Morgan Hill and Loma Prieta earthquakes in California
James C. Savage, Michael Lisowski
1995, Geophysical Research Letters (22) 759-762
Frequent measurements since mid‐1981 of the distances from a geodetic monument located about 100 km south‐southeast of San Francisco to three monuments 30 to 40 km distant provide an unusually complete record of the deformation before and after two nearby earthquakes, the 1984 Morgan Hill (ML = 6.2) and 1989 Loma...
Strain accumulation in Owens Valley, California, 1974 to 1988
James C. Savage, Michael Lisowski
1995, Bulletin of the Seismological Society of America (85) 151-158
Strain accumulation observed over the 1974 to 1988 interval in a 25 by 100 km aperture trilateration network spanning Owens Valley is adequately described by a strain rate that is uniform in space and time. The tensor strain-rate components referred to a coordinate system with the 2 axis directed N18°W...
Interseismic uplift at the Nankai subduction zone, southwest Japan, 1951–1990
James C. Savage
1995, Journal of Geophysical Research B: Solid Earth (100) 6339-6350
Uplift as a function of time from 1951 through 1990 has been deduced from annual mean sea level measured at 15 tide gages along the Nankai subduction zone, southwest Japan. The recurrence interval for rupture of the Nankai subduction zone is about 100 years, and the most recent rupture was...
Water-level declines from 1980-90 in major aquifers in the Twin Cities area
W. J. Andrews, L. C. Trotta, M.E. Schoenberg
1995, Conference Paper, Water management in urban areas, Houston, Texas Nov. 5-10, 1995, Proceedings
No abstract available....
Hot-side-up aureole in southwest Yukon and limits on terrane assembly of the northern Canadian Cordillera: Comment and Reply
V. L. Hansen, D.H. Oliver, Cynthia Dusel-Bacon, Stephen T. Johnston, Philippe Erdmer
1995, Geology (23) 1151-1152
No abstract available....
Characteristic or haphazard?
Ross S. Stein
1995, Nature (378) 443-444
No abstract available....
Latest Quaternary foraminifers and sediment transport in Pervenets Canyon, Bering Sea
Scott W. Starratt
1995, Marine Micropaleontology (26) 233-243
A combination of microfossil and sediment analysis has been used in an attempt to understand oceanographic processes and the late Quaternary history of the Pervenets Canyon region. The primary sedimentation process in Pervenets Canyon is downslope transport. Near the shelfbreak, there is evidence of turbidite and debris-flow activity, but at...
Seven sea otters dead-Why?
Lynn H. Creekmore
1995, The Otter Raft 9
No abstract available....
