Conference Papers
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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.
Filter Total Items: 5326
U-Th-Pb Isotopic Systematics of Lunar Norite 78235
No abstract available.
Authors
Wayne R. Premo, M. Tatsumoto
U-Pb isotopic characteristics of lunar meteorites Yamato-793274 and Yamato-86032
No abstract available.
Authors
Mistunobu Tatsumoto, Wayne R. Premo
Role of river corridors as fish and wildlife habitat: Implications for management and restoration
No abstract available.
Authors
James A. Allen
The hydrogeologic framework of the Northern Coastal Province Aquifer System of Puerto Rico
No abstract available.
Authors
Jesus Rodriguez-Martinez
40Ar/39Ar laser fusion and K-Ar ages from Lathrop Wells, Nevada, and Cima, California. The age of the latest volcanic activity in the Yucca Mountain area
K-Ar and 40Ar/39Ar ages from the Lathrop Wells volcanic center, Nevada, and from the Cima volcanic field, California, indicate that the recently reported 20-ka age estimate for the Lathrop Wells volcanic center is incorrect. Instead an age of 119??11 to 141??10 ka is indicated for the Lathrop Wells volcanic center. This age corrected is concordant with the ages determined by two independent isotop
Authors
Brent D. Turrin, Duane E. Champion
A geological assessment of shoreline erosion, U.S. Great Lakes
No abstract available.
Authors
D. W. Folger
A Systematic Revision of the Neotropical Catfish Family Ageneiosidae (Teleostei: Ostariophysi: Siluriformes)
Abstract not supplied at this time
Authors
S. J. Walsh
Aerial videotape mapping of coastal geomorphic changes
An aerial geomorphic mapping system was developed to examine the spatial and temporal variability in the coastal geomorphology of Louisiana. Between 1984 and 1990 eleven sequential annual and post-hurricane aerial videotape surveys were flown covering periods of prolonged fair weather, hurricane impacts and subsequent post-storm recoveries. A coastal geomorphic classification system was developed
Authors
Karolien Debusschere, Shea Penland, Karen A. Westphal, P. Douglas Reimer, Randolph A. McBride
Alternative method to Mariotte reservoir system for maintaining constant hydraulic pressure
Several problems with the Mariotte reservoir system were discovered when it was used to apply a constant water pressure as a boundary condition for a prolonged period. The constant-pressure boundary condition is required for some laboratory experiments to study water flow through porous media. The observed problems were caused by temperature and barometric-pressure fluctuations while the flow rate
Authors
Falah Thamir
Assessing the effects of microbial metabolism and metabolities on reservoir pore structure
The effect of microbial treatment on pore structure of sandstone and carbonatereservoirs was determined. Understanding how different bacterial strains and their metabolic bioproducts affect reservoir pore structure will permit the prudent application of microorganisms for enhanced oil recovery. The microbial strains tested included Clostridium acetobutylicum, a polymer-producing Bacillus strain, a
Authors
E.O. Udegbunam, J.P. Adkins, R.M. Knapp, M.J. McInerney, R.S. Tanner
Assessment of fracture-sampling techniques for laboratory tests on core
As part of the site characterization work to be done at Yucca Mountain in Nye County, Nevada, a candidate site for the first mined-geologic repository for high-level nuclear waste, laboratory tests are proposed to evaluate fluid flow in single fractures. Laboratory and onsite tests were conducted to develop methods for collecting rock-core samples containing single fractures for the subsequent lab
Authors
G.R. Severson, J.M. Boernge