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Page 3711, results 92751 - 92775

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Publication Extents

Not all publications have extents, not all extents are completely accurate
A 7 year record of above-ground net primary production in a southeastern Mexican mangrove forest
J.W. Day Jr., Carlos Coronado-Molina, F. R. Vera-Herrera, R. Twilley, V. H. Rivera-Monroy, V. H. Alvarez-Guillen, Richard H. Day, William Conner
1996, Aquatic Botany (55) 60
Spatial and temporal variations in net above-ground primary production (NPP) and litter turnover rate were studied, from 1987 to 1993, in a mangrove forest bordering Laguna de Terminos, Mexico. NPP, the sum of total litter fall and wood production, was measured over the entire study period in three zones in...
Carbonate deposition, Pyramid Lake subbasin, Nevada: 3. The use of 87Sr values in carbonate deposits (tufas) to determine the hydrologic state of paleolake systems
L. Benson, Z. Peterman
1996, Palaeogeography, Palaeoclimatology, Palaeoecology (119) 201-213
Sierran rivers that discharge to the Lahontan basin have much lower (∼4.5‰) δ87Sr values than the Humboldt River which drains northeastern Nevada. The δ87Sr values of tufas deposited during the last lake cycle were used to determine when Humboldt derived Sr entered the Pyramid Lake subbasin. Prior to ∼15,000 yr B.P., the...
Imaging surface contacts: Power law contact distributions and contact stresses in quartz, calcite, glass and acrylic plastic
James H. Dieterich, B.D. Kilgore
1996, Tectonophysics (256) 219-239
A procedure has been developed to obtain microscope images of regions of contact between roughened surfaces of transparent materials, while the surfaces are subjected to static loads or undergoing frictional slip. Static loading experiments with quartz, calcite, soda-lime glass and acrylic plastic at normal stresses to 30 MPa yield power...
Contemporary channel-levee systems in active borderland basin plains, California Continental Borderland
J.R. Schwalbach, B. D. Edwards, D.S. Gorsline
1996, Sedimentary Geology (104) 53-72
Long-range large-scale side-scan (GLORIA) information, other seismic reflection profiling studies, and data from cores in the California Continental Borderland, have defined active levee-channel systems extending basinward from the lower fan of Hueneme-Mugu Submarine Fan, Redondo Submarine Fan, and Santa Cruz Canyon Fan in Santa Monica, San Pedro and Santa Cruz...
Properties of the seismic nucleation phase
G. C. Beroza, W.L. Ellsworth
1996, Tectonophysics (261) 209-227
Near-source observations show that earthquakes begin abruptly at the P-wave arrival, but that this beginning is weak, with a low moment rate relative to the rest of the main shock. We term this initial phase of low moment rate the seismic nucleation phase. We have observed the seismic nucleation phase...
Shallow marine event sedimentation in a volcanic arc-related setting: The Ordovician Suri Formation, Famatina Range, northwest Argentina
M.G. Mangano, L.A. Buatois
1996, Sedimentary Geology (105) 63-90
The Loma del Kilómetro Member of the Lower Ordovician Suri Formation records arc-related shelf sedimentation in the Famatina Basin of northwest Argentina. Nine facies, grouped into three facies assemblages, are recognized. Facies assemblage 1 [massive and parallel-laminated mudstones (facies A) locally punctuated by normally graded or parallel-laminated silty sandstones (facies...
Mineral Resources Data System (MRDS)
G.T. Mason, R.E. Arndt
1996, Data Series 20
The U.S. Geological Survey (USGS) operates the Mineral Resources Data System (MRDS), a digital system that contained 111,955 records on Sept. 1, 1995. Records describe metallic and industrial commodity deposits, mines, prospects, and occurrences in the United States and selected other countries. These records have been created over the years...
Selected ground-water data for Yucca Mountain region, southern Nevada and eastern California, through December 1994
C.L. Westenburg, R.J. La Camera
1996, Open-File Report 96-205
The U.S. Geological Survey, in support of the U.S. Department of Energy, Yucca Mountain Site Characterization Project, collects, compiles, and summarizes hydrologic data in the Yucca Mountain region. The data are collected to allow assessments of ground-water resources during studies to determine the potential suitability of Yucca Mountain for storing...
National water summary on wetland resources
1996, Water Supply Paper 2425
This National Water Summary on Wetland Resources documents wetland resources in the United States. It presents an overview of the status of knowledge of wetlands at the present time-what they are, where they are found, why they are important, and the controversies surrounding them, with an emphasis on their hydrology....
Simulation analysis of the ground-water flow system in the Portland Basin, Oregon and Washington
David S. Morgan, William D. McFarland
1996, Water Supply Paper 2470-B
This report presents results derived from a numerical model of the ground-water flow system in the Portland Basin, Oregon and Washington, that was used to test and refine the conceptual understanding of the flow system, estimate the effects of past and future human-caused changes to ground-water recharge and discharge on...