The Cenomanian/Turonian carbon burial event, Bass River, NJ, USA: Geochemical, paleoecological, and sea-level changes
P. J. Sugarman, K.G. Miller, R.K. Olsson, J.V. Browning, J.D. Wright, L. M. De Romero, T. S. White, F.L. Muller, J. Uptegrove
1999, Journal of Foraminiferal Research (29) 438-452
The Bass River borehole (ODP Leg 174AX) recovered approximately 200 ft (61 m) of upper Cenomanian to lower Turonian strata from the New Jersey Coastal Plain, USA, including the expression of a global carbon burial event. The Cenomanian/Turonian (C/T) boundary is recognized at Bass River at ???1935.5 ft (589.9 m)...
Simultaneous determination of Ca, Cu, Ni, Zn and Cd binding strengths with fulvic acid fractions by Schubert's method
G.K. Brown, P. MacCarthy, J.A. Leenheer
1999, Analytica Chimica Acta (402) 169-181
The equilibrium binding of Ca2+, Ni2+, Cd2+, Cu2+ and Zn2+ with unfractionated Suwannee river fulvic acid (SRFA) and an enhanced metal binding subfraction of SRFA was measured using Schubert’s ion-exchange method at pH 6.0 and at an ionic strength (μ) of 0.1 (NaNO3). The fractionation and subfractionation were directed towards obtaining an...
The factors controlling species density in herbaceous plant communities: An assessment
J.B. Grace
1999, Perspectives in Plant Ecology, Evolution and Systematics (2) 1-28
This paper evaluates both the ideas and empirical evidence pertaining to the control of species density in herbaceous plant communities. While most theoretical discussions of species density have emphasized the importance of habitat productivity and disturbance regimes, many other factors (e.g. species pools, plant litter accumulation, plant morphology) have been...
Nonlinear soil response in the vicinity of the Van Normal Complex following the 1994 Northridge, California, earthquake
G. Cultrera, D.M. Boore, W. B. Joyner, C.M. Dietel
1999, Bulletin of the Seismological Society of America (89) 1214-1231
Ground-motion recording obtaineds at the Van Norman Complex from the 1994 Northridge, California, mainshock and its aftershocks constitute an excellent data set for the analysis of soil response as a function of ground-motion amplitude. We searched for nonlinear response by comparing the Fourier...
Enzymatic and histopathologic biomarkers as indicators of contaminant exposure and effect in Asian clam (Potamocorbula amurensis)
S.J. Teh, S.L. Clark, C. L. Brown, S. N. Luoma, D.E. Hinton
1999, Biomarkers (4) 497-509
Enzymatic and histopathologic alterations of the digestive gland, gill, gonad, and kidney were studied in Asian clam (Potamocorbula amurensis) in April, 1997 from each of four United States Geological Survey (USGS) stations in the San Francisco Estuary. Stations were selected based on differing body burdens of metallic contaminants in clams...
Estimates of suspended-sediment flux and bedform activity on the inner portion of the Eel continental shelf
D.A. Cacchione, P.L. Wiberg, J. Lynch, J. Irish, P. Traykovski
1999, Marine Geology (154) 83-97
Energetic waves, strong bottom currents, and relatively high rates of sediment discharge from the Eel River combined to produce large amounts of suspended-sediment transport on the inner continental shelf near the Eel River during the winter of 1995-1996. Bottom-boundary-layer (BBL) measurements at a depth of ~50 m using the GEOPROBE...
Newly recognized faunal diversity within the Hamburg Klippe, Pennsylvania, U.S.A.: Implications for interpreting the history of the klippe
J.E. Repetski, G.R. Ganis, H. S. Williams
1999, Conference Paper, Acta Universitatis Carolinae, Geologica
[No abstract available]...
Surface faulting and paleoseismic history of the 1932 Cedar Mountain earthquake area, west-central Nevada, and implications for modern tectonics of the Walker Lane
J. W. Bell, C.M. DePolo, A. R. Ramelli, A.M. Sarna-Wojcicki, C.E. Meyer
1999, Geological Society of America Bulletin (111) 791-807
The 1932 Cedar Mountain earthquake (Ms 7.2) was one of the largest historical events in the Walker Lane region of western Nevada, and it produced a complicated strike-slip rupture pattern on multiple Quaternary faults distributed through three valleys. Primary, right-lateral surface ruptures occurred on north-striking faults in Monte Cristo Valley;...
U.S. geological survey measurement programs and models pertinent to ocean and coastal prediction modeling
J. P. Bennett
1999, Marine Technology Society Journal (33) 88-92
No abstract available. ...
Characterizing a sewage plume using the 3H-3He dating technique
Stephanie Dunkle Shapiro, Denis LeBlanc, Peter Schlosser, Andrea Ludin
1999, Ground Water (37) 861-878
An extensive 3H-3He study was performed to determine detailed characteristics of a regional flow system and a sewage plume over a distance of 4 km in a sand and gravel aquifer at Otis Air Base in Falmouth, Massachusetts. 3H-3He ages increase with depth in individual piezometer clusters and with distance...
Channel catfish response to ultraviolet-B radiation
M. S. Ewing, V. S. Blazer, D. L. Fabacher, E. E. Little, K. M. Kocan
1999, Journal of Aquatic Animal Health (11) 192-197
Fingerling channel catfish Ictalurus punctatus exposed to simulated ultraviolet-B radiation at an average daily dose of 2.9 J/cm2 were quite sensitive to the radiation. After a 24-h exposure, thinning of the most dorsal epidermis frequently was accompanied by edema. Compared with epidermis of unexposed fish, mucous cells in exposed fish...
Taxonomic status of Myotis occultus
E.W. Valdez, Jerry R. Choate, M.A. Bogan, Terry L. Yates
1999, Journal of Mammalogy (80) 545-552
The taxonomic status of the Arizona myotis (Myotis occultus) is uncertain. Although the taxon was described as a distinct species and currently is regarded as such by some authors, others have noted what they interpreted as intergradation with the little brown bat (M. lucifugus carissima) near the Colorado-New Mexico state...
Precipitation structure in the Sierra Nevada of California during winter
G.R. Pandey, D.R. Cayan, K.P. Georgakakos
1999, Journal of Geophysical Research D: Atmospheres (104) 12019-12030
Influences of upper air characteristics along the coast of California upon winter-time (November-April) precipitation in the Sierra Nevada are investigated. Precipitation events in the Sierra Nevada region occur mostly during wintertime, irrespective of station location (leeside or windside) and elevation. Most precipitation episodes in the region are associated with moist...
Sequence features and phylogenetic analysis of the stress protein Hsp90α in chinook salmon Oncorhynchus tshawytscha, a poikilothermic vertebrate
Aldo N. Palmisano, James R. Winton, Walton W. Dickhoff
1999, Biochemical and Biophysical Research Communications (258) 784-791
We cloned and sequenced a chinook salmon Hsp90 cDNA; sequence analysis shows it to be Hsp90??. Phylogenetic analysis supports the hypothesis that ?? and ?? paralogs of Hsp90 arose as a result of a gene duplication event and that they diverged early in the evolution of vertebrates, before tetrapods separated...
Low-temperature alteration of dredged volcanics from the Southern Chile Ridge: Additional information about early stages of seafloor weathering
T. Pichler, W.I. Ridley, E. Nelson
1999, Marine Geology (159) 155-177
A suite of submarine volcanic rocks from the Southern Chile Ridge has been examined in order to investigate the early stages of low temperature alteration. Alteration in these samples proceeded as follows: (1) Fe-staining on sample surface and along fractures, (2) filling of vesicles with secondary material, (3) breakdown of...
Nevada STORMS project: Measurement of mercury emissions from naturally enriched surfaces
M.S. Gustin, S. Lindberg, F. Marsik, A. Casimir, R. Ebinghaus, G. Edwards, C. Hubble-Fitzgerald, R. Kemp, H. Kock, T. Leonard, J. London, M. Majewski, C. Montecinos, J. Owens, M. Pilote, L. Poissant, P. Rasmussen, F. Schaedlich, D. Schneeberger, W. Schroeder, J. Sommar, R. Turner, A. Vette, D. Wallschlaeger, Z. Xiao, H. Zhang
1999, Journal of Geophysical Research D: Atmospheres (104) 21831-21844
Diffuse anthropogenic and naturally mercury-enriched areas represent long-lived sources of elemental mercury to the atmosphere. The Nevada Study and Tests of the Release of Mercury From Soils (STORMS) project focused on the measurement of mercury emissions from a naturally enriched area. During the project, concurrent measurements of mercury fluxes from...
Development of a deep-crustal shear zone in response to syntectonic intrusion of mafic magma into the lower crust, Ivrea-Verbano zone, Italy
A.W. Snoke, T.J. Kalakay, J. E. Quick, S. Sinigoi
1999, Earth and Planetary Science Letters (166) 31-45
A 1 to 1.5 km-thick, high-temperature shear zone is localized in wall rocks subparallel to the eastern intrusive contact of the Permian Mafic Complex of the Ivrea-Verbano zone (IVZ), Italy. The shear zone is characterized by concentrated ductile deformation manifested by a penetrative foliation subparallel to the intrusive contact and...
Targeted stock identification using multilocus genotype 'familyprinting'
Benjamin Letcher, Tim L. King
1999, Fisheries Research (43) 99-111
We present an approach to stock identification of small, targeted populations that uses multilocus microsatellite genotypes of individual mating adults to uniquely identify first- and second-generation offspring in a mixture. We call the approach ‘familyprinting’; unlike DNA fingerprinting where tissue samples of individuals are matched, offspring from various families are...
Influence of various water quality sampling strategies on load estimates for small streams
Dale M. Robertson, Eric D. Roerish
1999, Water Resources Research (35) 3747-3759
Extensive streamflow and water quality data from eight small streams were systematically subsampled to represent various water‐quality sampling strategies. The subsampled data were then used to determine the accuracy and precision of annual load estimates generated by means of a regression approach (typically used for big rivers) and to determine...
A climatic record from 14C-dated wood fragments from southwestern Colorado
S. Epstein, X. Xu, P. Carrara
1999, Global Biogeochemical Cycles (13) 781-784
Deuterium concentrations in trees are related to the climatic temperature at which the trees grew. Deuterium analyses were made on all available (39) 14C-dated (all 14C dates cited are uncorrected) wood fragments collected from Lake Emma sediments. The 14C dates range from 9600 to 5400 'B.P.'. Tree line was above...
Debris-flow origin for the Simud/Tiu deposit on Mars
K. L. Tanaka
1999, Journal of Geophysical Research E: Planets (104) 8637-8652
A late Hesperian smooth plains deposit on Mars interpreted as a debris flow extends more than 2000 km from Hydraotes Chaos, through Simud and Tiu Valles, and into Chryse Planitia. The Simud/Tiu deposit widens out to >1000 km and embays streamlined landforms and knobs made up of sedimentary and perhaps...
Natural hydrocarbon background in benthic sediments of Prince William Sound, Alaska: Oil vs coal
J.W. Short, K.A. Kvenvolden, P.R. Carlson, F. D. Hostettler, R.J. Rosenbauer, B.A. Wright
1999, Environmental Science & Technology (33) 34-42
The source of the background hydrocarbons in benthic sediments of Prince William Sound (PWS), AK, where the 1989 Exxon Valdez oil spill (EVOS) occurred, has been ascribed to oil seeps in coastal areas of the Gulf of Alaska (GOA). We present evidence that coal is a more plausible source, including...
The geodesy and mapping program of the United States geological survey in Antarctica
J.L. Mullins, C.A. Hallam, L.D. Hothem, J.-C. Thomas
1999, Photogrammetric Engineering and Remote Sensing (65) 1340-1341
[No abstract available]...
Use of implantable pellets to administer low levels of methyl mercury to fish
B.S. Arnold, C. H. Jagoe, T. S. Gross
1999, Conference Paper, ASTM Special Technical Publication
Implantable pellets of methyl mercury chloride were tested in Nile Tilapia (Oreochromis niloticus) to appraise the effectiveness of the method for chronic studies of mercury. Two dosing regimes of 15 and 1.5 grams/CH3HgCl pellet (test 1) and 1 and 0.1 grams/pellet (test 2-3) of methyl mercury chloride were used in...
Fluid inclusion and vitrinite-reflectance geothermometry compared to heat-flow models of maximum paleotemperature next to dikes, western onshore Gippsland Basin, Australia
C.E. Barker, Y. Bone, M. D. Lewan
1999, International Journal of Coal Geology (37) 73-111
Nine basalt dikes, ranging from 6 cm to 40 m thick, intruding the Upper Jurassic–Lower Cretaceous Strzelecki Group, western onshore Gippsland Basin, were used to study maximum temperatures (Tmax) reached next...
