Comment on “Macrodispersion in sand-shale sequences” by A. J. Desbarats
Daniel J. Goode, Allen M. Shapiro
1991, Water Resources Research (27) 135-139
Desbarats [1990] used a particle-tracking scheme to investigate the physics of three-dimensional solute transport in aquifers composed of two porous media of different hydraulic conductivities. The spatially heterogeneous fluid velocity was assumed to be the only mechanism of solute...
The Detroit River: Effects of contaminants and human activities on aquatic plants and animals and their habitats
Bruce A. Manny, David Kenaga
1991, Hydrobiologia (219) 269-279
Despite the extensive urbanization of its watershed, the Detroit River still supports diverse fish and wildlife populations. Conflicting uses of the river for waste disposal, water withdrawals, shipping, recreation, and fishing require innovative management. Chemicals added by man to the Detroit River have adversely affected the health and habitats of...
Diet of juvenile lake trout in southern Lake Ontario in relation to abundance and size of prey fishes, 1979-1987
Joseph H. Elrod, Robert O’Gorman
1991, Transactions of the American Fisheries Society (120) 290-302
We examined the diet of juvenile lake trout Salvelinus namaycush (<450 mm, total length) in Lake Ontario during four sampling periods (April–May, June, July–August, and October 1979–1987) in relation to changes in prey fish abundance in the depth zone where we caught the lake trout. Over all years combined, slimy...
Acute toxicities to larval rainbow trout of representative compounds detected in Great Lakes fish
Carol Cotant Edsall
1991, Bulletin of Environmental Contamination and Toxicology (46) 173-178
In recent years the National Fisheries Research Center-Great Lakes has ranked the potential hazard to fish and invertebrates of various chemical compounds detected in two Great Lakes fishes-- lake trout, Salvelinus namaycush, and walleye, Stizostedion vitreum vitreum (Hesselberg and Seelye 1982). This hazard assessment has included the identification of the...
Production of Hexagenia limbata nymphs in contaminated sediments in the Upper Great Lakes connecting channels
Thomas A. Edsall, Bruce A. Manny, Donald W. Schloesser, Susan J. Nichols, Anthony M. Frank
1991, Hydrobiologia (219) 353-361
In April through October 1986, we sampled sediments and populations of nymphs of the burrowing mayfly, Hexagenia limbata (Serville), at 11 locations throughout the connecting channels of the upper Great Lakes, to determine if sediment contaminants adversely affected nymph production. Production over this period was high (980 to 9231 mg...
Reducing volcanic risk
R. Decker, B. Decker
1991, Earthquakes & Volcanoes (USGS) (22) 129-130
The last two decades have brought major advances in research on how volcanoes work and how to monitor their changing habits. Geologic mapping as well as studies of earthquake patterns and surface deformation associated with underground movement of magma have given scientists a better view of the inner structure and...
Science and the public welfare
F. Press
1991, Earthquakes & Volcanoes (USGS) (22) 93-93
Earthquakes & Volcanoes has achieved much in its 20-year history. It serves as a link with policy makers and the public. it offers a variety of information attractive to professionals: historical, culutral, and curent events, and news items not found or missed elsewhere. And the journal can anticipate an even mroe...
DUPAL anomaly in the Sea of Japan: Pb, Nd, and Sr isotopic variations at the eastern Eurasian continental margin
M. Tatsumoto, Y. Nakamura
1991, Geochimica et Cosmochimica Acta (55) 3697-3708
Volcanic rocks from the eastern Eurasian plate margin (southwestern Japan, the Sea of Japan, and northeastern China) show enriched (EMI) component signatures. Volcanic rocks from the Ulreung and Dog Islands in the Sea of Japan show typical DUPAL anomaly characteristics with extremely high Δ208/204 Pb (up to 143) and enriched...
Suggestions to authors of the reports of the United States Geological Survey
Wallace R. Hansen, editor(s)
1991, Report
Suggestions to Authors (STA) is used as the writing style guide for the U.S. Geological Survey (USGS) technical reports and maps. The STA is widely distributed in paper outside of the USGS as a basic scientific writing style guide for scientists, students, and editors. The goal of STA is to...
Seasonal and geothermal production variations in concentrations of He and CO2 in soil gases, Roosevelt Hot Springs Known Geothermal Resource Area, Utah, U.S.A.
M. E. Hinkle
1991, Applied Geochemistry (6) 35-47
To increase understanding of natural variations in soil gas concentrations, CO2, He, O2 and N2 were measured in soil gases collected regularly for several months from four sites at the Roosevelt Hot Springs Known Geothermal Resource Area, Utah. Soil temperature, air temperature, per...
Detection of poly(ethylene glycol) residues from nonionic surfactants in surface water by1h and13c nuclear magnetic resonance spectrometry
J.A. Leenheer, R.L. Wershaw, P.A. Brown, T.I. Noyes
1991, Environmental Science & Technology (25) 161-168
??? Poly(ethylene glycol) (PEG) residues were detected in organic solute isolates from surface water by 1H nuclear magnetic resonance spectrometry (NMR), 13C NMR spectrometry, and colorimetric assay. PEG residues were separated from natural organic solutes in Clear Creek, CO, by a combination of methylation and chromatographic procedures. The isolated PEG...
An intercomparison of hydrological network-design technologies
M. E. Moss, Gary D. Tasker
1991, Hydrological Sciences Journal (36) 209-221
Two network-design technologies are compared by random sub-sampling of actual streamflow data. The technologies, Network Analysis for Regional Information (NARI) and Network Analysis Using Generalized Least Squares (NAUGLS), have a common objective, viz. to maximize regional information within a limited budget and time horizon. The data used for intercomparison are...
Review of geochemical reference sample programs since G-1 and W-1: Progress to date and remaining challenges
J. S. Kane
1991, Spectrochimica Acta Part B: Atomic Spectroscopy (46) 1623-1638
A brief history of programs to develop geochemical reference samples and certified reference samples for use in geochemical analysis is presented. While progress has been made since G-1 and W-1 were issued, many challenges remain....
Selenium and associated trace elements in soil, rock, water and streambed sediment of the proposed Sandstone Reservoir, south-central Wyoming
D. L. Naftz, C. S. Barclay
1991, Water-Resources Investigations Report 91-4000
No abstract available....
A FORTRAN program for interpretation of relative permeability from unsteady-state displacements with capillary pressure included
E.O. Udegbunam
1991, Computers & Geosciences (17) 1351-1357
This paper presents a FORTRAN program for the determination of two-phase relative permeabilities from unsteady-state displacement data with capillary pressure terms included. The interpretative model employed in this program combines the simultaneous solution of a variant of the fractional flow equation which includes a capillary pressure term and an integro-differential...
Fossil and active fumaroles in the 1912 eruptive deposits, Valley of ten thousand smokes, Alaska
T. E. C. Keith
1991, Journal of Volcanology and Geothermal Research (45) 227-254
Fumaroles in the ash-flow sheet emplaced during the 1912 eruption of Novarupta were intensely active throughout the Valley of Ten Thousand Smokes (VTTS) when first studied in 1917. Fumarole temperatures recorded in 1919 were as hot as 645??C. Influx of surface waters into the hot ash-flow sheet provided the fluid...
Oil-generating coals of the San Juan Basin, New Mexico and Colorado, U.S.A.
J.L. Clayton, D. D. Rice, G.E. Michael
1991, Organic Geochemistry (17) 735-742
Coal beds of the Upper Cretaceous Fruitland Formation in the San Juan Basin of northwestern New Mexico and southwestern Colorado have significant liquid hydrocarbon generation potential as indicated by typical Rock-Eval Hydrogen Indexes in the range of 200–400 mg hydrocarbon/g organic carbon (type II and III organic matter). Small, non-commercial...
Wigeongrass (Ruppia maritima): a literature review
Harold A. Kantrud
1991, Fish and Wildlife Research 10
Wigeongrass (Ruppia maritima L.) is a submersed macrophyte of nearly cosmopolitan distribution and worldwide importance as a waterfowl food. Unfortunately, the plant no longer inhabits vast areas disturbed by human activities. Taxonomic status of the plant is uncertain, especially in North America. In mild climates, in habitats subject to environmental...
Fault orientations in extensional and conjugate strike-slip environments and their implications
W. Thatcher, D.P. Hill
1991, Geology (19) 1116-1120
Seismically active conjugate strike-slip faults in California and Japan typically have mutually orthogonal right- and left-lateral fault planes. Normal- fault dips at earthquake nucleation depths are concentrated between 40° and 50°. The observed orientations and their strong clustering are surprising, because conventional faulting...
Major element, REE, and Pb, Nd and Sr isotopic geochemistry of Cenozoic volcanic rocks of eastern China: Implications for their origin from suboceanic-type mantle reservoirs
A. R. Basu, Junwen Wang, Wankang Huang, Guanghong Xie, M. Tatsumoto
1991, Earth and Planetary Science Letters (105) 149-169
Major- and rare-earth-element (REE) concentrations and UThPb, SmNd, and RbSr isotope systematics are reported for Cenozoic volcanic rocks from northeastern and eastern China. These volcanic rocks, characteristically lacking the calc-alkaline suite of orogenic belts,...
In situ bacterial selenate reduction in the agricultural drainage systems of western Nevada
R.S. Oremland, N.A. Steinberg, T. S. Presser, L.G. Miller
1991, Applied and Environmental Microbiology (57) 615-617
Dissimilatory in situ selenate reduction to elemental selenium in sediments from irrigated agricultural drainage regions of western Nevada was measured at ambient Se oxyanion concentrations. Selenate reduction was rapid, with turnover rate constants ranging from 0.04 to 1.8 h-1 at total Se concentrations in pore water of 13 to 455...
Exploration drilling and reservoir model of the Platanares geothermal system, Honduras, Central America
F. Goff, S.J. Goff, S. Kelkar, L. Shevenell, A.H. Truesdell, J. Musgrave, H. Rufenacht, W. Flores
1991, Journal of Volcanology and Geothermal Research (45) 101-123
Results of drilling, logging, and testing of three exploration core holes, combined with results of geologic and hydrogeochemical investigations, have been used to present a reservoir model of the Platanares geothermal system, Honduras. Geothermal fluids circulate at depths ??? 1.5 km in a region of active tectonism devoid of Quaternary...
Organic petrology of epi-impsonite at Page, Oklahoma, U.S.A.
Brian J. Cardott
1991, Organic Geochemistry (17) 185-191
Impsonite (asphaltic pyrobitumen) occurs as fracture-filling veins cutting massive sandstone in the frontal Ouachita Mountains near Page, Oklahoma. The Page impsonite formed from low-temperature alteration of crude oil. Mean maximum bitumen reflectance in oil immersion (Rmax">Rmax) of seven samples is 1.41–1.96%. Mean apparent bireflectance...
Isotopic evidence for early Proterozoic age of the Idono Complex, west-central Alaska
Marti L. Miller, J.Y. Bradshaw, D.L. Kimbrough, T. W. Stern, T. K. Bundtzen
1991, Journal of Geology (99) 209-223
The Idono Complex of west-central Alaska is a fault-bounded, fragment of Early Proterozoic continental crust surrounded by overlap assemblages and younger terranes accreted in Mesozoic time. It is composed of granitic to dioritic orthogneiss, amphibolite, and metasedimentary rocks. Trace...
Importance of hydrologic data for interpreting wetland maps and assessing wetland loss and mitigation
V. Carter
1991, Biological Report - US Fish & Wildlife Service (90) 79-85
The US Geological Survey collects and disseminates, in written and digital formats, groundwater and surface-water information related to the tidal and nontidal wetlands of the United States. This information includes quantity, quality, and availability of groundwater and surface water; groundwater and surface-water interactions (recharge-discharge); groundwater flow; and the basic surface-water...
