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Page 3785, results 94601 - 94625

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Not all publications have extents, not all extents are completely accurate
Type of faulting and orientation of stress and strain as a function of space and time in Kilauea's south flank, Hawaii
D. Gillard, M. Wyss, P. Okubo
1996, Journal of Geophysical Research B: Solid Earth (101) 16025-16042
Earthquake focal mechanisms of events occurring between 1972 and 1992 in the south flank of Kilauea volcano, Hawaii, are used to infer the state of stress and strain as a function of time and space. We have determined 870 fault plane solutions from P wave first motion polarities for events with magnitudes ML ≥...
Improving regional-model estimates of urban-runoff quality using local data
A.B. Hoos
1996, Journal of the American Water Resources Association (32) 855-863
Urban water-quality managers need load estimates of storm-runoff pollutants to design effective remedial programs. Estimates are commonly made using published models calibrated to large regions of the country. This paper presents statistical methods, termed model-adjustment procedures (MAPs), which use a combination of local data and...
A minimum U-Pb age for Siberian flood-basalt volcanism
S.L. Kamo, G.K. Czamanske, T.E. Krogh
1996, Geochimica et Cosmochimica Acta (60) 3505-3511
Establishing an accurate and precise age for Siberian flood-basalt volcanism is of great importance in evaluating causes for the unequaled mass extinction of flora and fauna at the Permian-Triassic boundary. We report a new, minimum U-Pb age obtained from zircon and baddeleyite from the mineralized Noril'sk I intrusion that cuts...
Infiltration and solute transport experiments in unsaturated sand and gravel, Cape Cod, Massachusetts: Experimental design and overview of results
David L. Rudolph, R. Gary Kachanoski, Michael A. Celia, Denis R. LeBlanc, Jonathon H. Stevens
1996, Water Resources Research (32) 519-532
A series of infiltration and tracer experiments was conducted in unsaturated sand and gravel deposits on Cape Cod, Massachusetts. A network of 112 porous cup lysimeters and 168 time domain reflectometry (TDR) probes was deployed at depths from 0.25 to 2.0 m below ground surface along the centerline of a...
Trace fossils and sedimentary facies from a Late Cambrian‐Early Ordovician tide‐dominated shelf (Santa Rosita Formation, northwest Argentina): Implications for ichnofacies models of shallow marine successions
M. Gabriela Mángano, Luis A. Buatois, Guillermo F. Acenolaza
1996, Ichnos: An International Journal for Plant and Animal Traces (5) 53-88
The Santa Rosita Formation is one the most widely distributed lower Paleozoic units of northwest Argentina. At the Quebrada del Salto Alto section, east of Purmamarca, Jujuy Province, it is represented by four sedimentary facies: thick‐bedded planar cross‐stratified quartzose sandstones (A), thin‐bedded planar cross‐stratified quartzose sandstones and mudstones (B), wave‐rippled...
Three-dimensional crustal structure of the southern Sierra Nevada from seismic fan profiles and gravity modeling
M.M. Fliedner, S. Ruppert, P.E. Malin, S. K. Park, G. Jiracek, R. A. Phinney, J.B. Saleeby, B. Wernicke, R. Clayton, Rebecca Hylton Keller, K. Miller, C. Jones, J.H. Luetgert, Walter D. Mooney, H. Oliver, S.L. Klemperer, G. A. Thompson
1996, Geology (24) 367-370
Traveltime data from the 1993 Southern Sierra Nevada Continental Dynamics seismic refraction experiment reveal low crustal velocities in the southern Sierra Nevada and Basin and Range province of California (6.0 to 6.6 km/s), as well as low upper mantle velocities (7.6 to 7.8 km/s). The crust thickens from southeast to...
Crustal structure of a transform plate boundary: San Francisco Bay and the central California continental margin
W.S. Holbrook, T.M. Brocher, Uri S. ten Brink, J.A. Hole
1996, Journal of Geophysical Research B: Solid Earth (101) 22311-22334
Wide-angle seismic data collected during the Bay Area Seismic Imaging Experiment provide new glimpses of the deep structure of the San Francisco Bay Area Block and across the offshore continental margin. San Francisco Bay is underlain by a veneer (<300 m) of sediments, beneath which P wave velocities increase rapidly...
AMS radiocarbon analyses from Lake Baikal, Siberia: Challenges of dating sediments from a large, oligotrophic lake
Steven M. Colman, Glenn A. Jones, M. Rubin, J.W. King, J.A. Peck, W. H. Orem
1996, Quaternary Science Reviews (15) 669-684
A suite of 146 new accelerator-mass spectrometer (AMS) radiocarbon ages provides the first reliable chronology for late Quaternary sediments in Lake Baikal. In this large, highly oligotrophic lake, biogenic and authigenic carbonate are absent, and plant macrofossils are extremely rare. Total organic carbon is therefore the primary material available for...
Adsorption of SO2 on bituminous coal char and activated carbon fiber prepared from phenol formaldehyde
Joseph A. DeBarr, Anthony A. Lizzio, Michael A. Daley
1996, ACS Division of Fuel Chemistry, Preprints (41) 339-342
Carbon-based materials are used commercially to remove SO2 from coal combustion flue gases. Historically, these materials have consisted of granular activated carbons prepared from lignite or bituminous coal. Recent studies have reported that activated carbon fibers (ACFs) may have potential in this application due to their relatively high SO2 adsorption...
Loess stratigraphy of the Lower Mississippi Valley
E.M. Rutledge, Margaret J. Guccione, H. W. Markewich, D.A. Wysocki, L.B. Ward
1996, Engineering Geology (45) 167-183
Loesses of the Lower Mississippi Valley (LMV) are world-famous. Sir Charles Lyell (1847), Hilgard (1860), Stafford (1869), Call (1891) and Mabry (1898), thought the LMV loess was a single water deposit although "double submergence" was noted by Call (1891) and Salisbury (1891). Shimek (1902) and Emerson (1918) recognized LMV loess...
Development of gypsum alteration on marble and limestone
E. S. McGee
1996, ASTM Special Technical Publication (1258) 376-397
Blackened alteration crusts of gypsum plus particulates that form on sheltered areas on marble and limestone buildings pose a challenge for rehabilitation and cleaning. Fresh marble and limestone samples exposed at monitored exposure sites present conditions of simple geometry and well-documented exposures but have short exposure histories (one to five...
A migratory mantle plume on Venus: Implications for Earth?
Mary G. Chapman, Randolph L. Kirk
1996, Journal of Geophysical Research B: Solid Earth (101) 15953-15967
A spatially fixed or at least internally rigid hotspot reference frame has been assumed for determining relative plate motions on Earth. Recent 1:5,000,000 scale mapping of Venus, a planet without terrestrial-style plate tectonics and ocean cover, reveals a systematic age and dimensional progression of corona-like arachnoids occurring in an uncinate...
Pesticides in ground water: Do atrazine metabolites matter?
S. Liu, S.T. Yen, D.W. Kolpin
1996, Journal of the American Water Resources Association (32) 845-853
Atrazine and atrazine-residue (atrazine + two metabolites - deethylatrazine and deisopropylatrazine) concentrations were examined to determine if consideration of these atrazine metabolites substantially adds to our understanding of the distribution of this pesticide in groundwater of the midcontinental United States. The mean of atrazine.residue concentrations was 53 percent greater than...
Zostera marina (eelgrass) growth and survival along a gradient ofnutrients and turbidity in the lower Chesapeake Bay
K.A. Moore, H.A. Neckles, R.J. Orth
1996, Marine Ecology Progress Series (142) 247-259
Survival of transplanted Zostera marina L. (eelgrass), Z. marina growth,and environmental conditions were studied concurrently at a number of sitesin a southwestern tributary of the Chesapeake Bay to elucidate the factorslimiting macrophyte distribution in this region. Consistent differences insurvival of the transplants were observed, with no long-term survival at anyof...
The Flinn-Engdahl Regionalisation Scheme: The 1995 revision
J.B. Young, B.W. Presgrave, H. Aichele, D.A. Wiens, E.A. Flinn
1996, Physics of the Earth and Planetary Interiors (96) 223-297
The Flinn-Engdahl Regionalisation Scheme, also known as the F-E Code, has been used by seismologists for many years to identify and specify regions of the Earth. The Working Group on Regionalisation of the International Association of Seismology and Physics of the Earth's Interior (IASPEI) Commission on Practice has the task...
On the central muscle attachment scar pattern of Suchonella Spizharsky 1939
I. G. Sohn
1996, Micropaleontology (42) 380-386
The fortuitous spalling of a carapace of the nonmarine Permian Suchonella typica Spizharsky 1939 disclosed the adductor muscle attachment scar as well as two accessory scars on both the right side of the steinkern and the inside of the spalled right valve. This central muscle field is illustrated and discussed....
Little Ice Age evidence from a south-central North American ice core, U.S.A.
D. L. Naftz, R.W. Klusman, R. L. Michel, P. F. Schuster, M.M. Ready, Howard E. Taylor, T.M. Yanosky, E.A. McConnaughey
1996, Arctic and Alpine Research (28) 35-41
In the past, ice-core records from mid-latitude glaciers in alpine areas of the continental United States were considered to be poor candidates for paleoclimate records because of the influence of meltwater on isotopic stratigraphy. To evaluate the existence of reliable paleoclimatic records, a 160-m ice core, containing about 250 yr...
Regionalization of annual precipitation maxima in Montana
Charles Parrett
Housner G.W.Chung R.M., editor(s)
1996, Conference Paper, Proceedings of the Conference on Natural Disaster Reduction
Precipitation depth estimation methods based on dimensionless precipitation-frequency curves were developed for 2-, 6-,and 24-hour storm durations for three homogeneous regions in Montana. Data from 402 daily and hourly precipitation stations and 54 daily precipitation stations were analyzed using the methods to form a database of the regions' annual precipitation...
Comparison of the uptake of dioxin-like compounds by caged channel catfish and semipermeable membrane devices in the Saginaw River, Michigan
Robert W. Gale, James N. Huckins, Jimmie D. Petty, Paul H. Peterman, Lisa L. Williams, Douglas Morse, Ted R. Schwartz, Donald E. Tillitt
1996, Environmental Science & Technology (31) 178-187
Elevated concentrations of planar, halogenated hydrocarbons have been linked to reproductive problems in a variety of fish-eating birds and mammals in the Great Lakes and in particular Saginaw Bay. Currently, there are no accurate procedures to assess bioavailability of these contaminants. Polychlorinated dibenzo-p-dioxins and dibenzofurans and mono- and non-ortho-chloro-substituted biphenyls...