The geology of selected peat-forming environments in temperate and tropical latitudes
C. C. Cameron, C.A. Palmer, J.S. Esterle
1990, International Journal of Coal Geology (16) 127-130
We studied peat in several geologic and climatic settings: (1) a glaciated terrain in cold-temperate Maine and Minnesota, U.S.A.; (2) an island in a temperate maritime climate in the Atlantic Ocean off the coast of Maine, U.S.A., where sea level is...
Constraints on the tectonics of the Mule Mountains thrust system, southeast California and southwest Arizona
R. M. Tosdal
1990, Journal of Geophysical Research Solid Earth (95) 20025-20048
The Mule Mountains thrust system crops out discontinuously over a 100-km-strike length in the Blythe-Quartzsite region of southeast California and southwest Arizona. Along the thrust system, middle and upper crustal metamorphic and plutonic rocks of Proterozoic and Mesozoic age are thrust north-northeastward (015° to 035°) over a lower plate metamorphic...
Chlorination of humic materials: Byproduct formation and chemical interpretations
D.A. Reckhow, P.C. Singer, Ronald L. Malcolm
1990, Environmental Science & Technology (24) 1655-1664
No abstract available....
The diamicton at Deadman Pass, central Sierra Nevada, California: A residual lag and colluvial deposit, not a 3 Ma glacial till
R. A. Bailey, N.K. Huber, R.R. Curry
1990, Geological Society of America Bulletin (102) 1165-1173
A diamicton exposed at Deadman Pass in the central Sierra Nevada has been previously described as glacial till and dated at about 3 Ma. If till, the deposit would document an exceptionally old and previously unrecognized glaciation in the Sierra Nevada. The age and glacial origin of the diamicton at...
Petrology, isotope characteristics, and K-Ar ages of the Maranhão, northern Brazil, Mesozoic basalt province
R.V. Fodor, A.N. Sial, S.B. Mukasa, E.H. McKee
1990, Contributions to Mineralogy and Petrology (104) 555-567
Northern Brazil contains remnants of Mesozoic flood basalts and hypabyssal rocks that were apparently emplaced during tectonism related to opening of the Atlantic Ocean. Analyses and new K-Ar ages reveal that this ∼700x250 km Maranhão province (5°–8°S) has low-Ti basalts (∼1.1 wt% TiO2) in the western part that range...
Some additional observations on inclusions in the granitic rocks of the Sierra Nevada
F. C. W. Dodge, R. W. Kistler
1990, Journal of Geophysical Research Solid Earth (95) 17841-17848
Microgranular quartz diorite and diorite inclusions are widespread in central Sierra Nevada granitoid rocks and are almost exclusively restricted to hornblende-bearing rocks, most commonly felsic tonalites and mafic granodiorites. Strontium 87/strontium 86 values of the inclusions and host granitoids from individual plutons generally plot on single isochrons that agree closely...
Geochemical constraints on groundwaters dominated by silicate hydrolysis: An interactive spreadsheet, mass balance approach
C.J. Bowser, B.F. Jones
1990, Chemical Geology (84) 33-35
[No abstract available]...
Hydrologic and hydraulic research in mountain rivers
Robert D. Jarrett
1990, Water Resources Bulletin (26) 419-429
Although our current (1990) knowledge of hydrologic and hydraulic processes is based on many years of study, there are river environments where these processes are complex and poorly understood. One of these environments is in mountainous areas, which cover about 25 percent of the United States. Use of conventional hydrologic...
Intragranular diffusion: An important mechanism influencing solute transport in clastic aquifers?
W.W. Wood, T. F. Kraemer, P.P. Hearn Jr.
1990, Science (247) 1569-1572
Quantification of intragranular porosity in sand-size material from an aquifer on Cape Cod, Massachusetts, by scanning electron microscopy, mercury injection, and epifluorescence techniques shows that there are more reaction sites and that porosity is greater that indicated by standard short-term laboratory tests and measurement techniques. Results from laboratory and field...
The surface area of soil organic matter
C. T. Chiou, J.-F. Lee, S.A. Boyd
1990, Environmental Science & Technology (24) 1164-1166
The previously reported surface area for soil organic matter (SOM) of 560-800 m2/g as determined by the ethylene glycol (EG) retention method was reexamined by the standard BET method based on nitrogen adsorption at liquid nitrogen temperature. Test samples consisted of two high organic content soils, a freeze-dried soil humic...
Organic matter and thermochemical sulfate reduction in the Viburnum Trend, southeast Missouri
J.S. Leventhal
1990, Economic Geology (85) 622-632
The role of organic matter in Mississippi Valley-type Pb-Zn deposits has been studied by systematically sampling and characterizing various types of organic matter in the Upper Cambrian Bonneterre formation in lead-zinc mines from the Viburnum Trend and from rocks as far as 20 km away from the Trend. Organic matter...
Monitoring the hydrologic system for potential effects of geothermal and ground-water development in the Long Valley caldera, Mono County, California, U.S.A
Christopher Farrar, Daniel Lyster
1990, Conference Paper, Transactions - Geothermal Resources Council
In the early 1980's, renewed interest in the geothermal potential of the Long Valley caldera, California, highlighted the need to balance the benefits of energy development with the established recreational activities of the area. The Long Valley Hydrologic Advisory Committee, formed in 1987, instituted a monitoring program to collect data...
Quaternary geology and geologic hazards of the West Desert Hazardous Industry Area, Tooele County, Utah
Barry J. Solomon, Bill D. Black
Robinson Lee, editor(s)
1990, Conference Paper
The study of Quaternary geology provides information to evaluate geologic conditions and identify geologic constraints on construction in the West Desert Hazardous Industry Area (WDHIA). The WDHIA includes portions of the Great Salt Lake Desert to the west, underlain by several thousand feet of sediments capped by saline mudflats, and...
Discharge rates of fluid and heat by thermal springs of the Cascade Range, Washington, Oregon, and northern California
Robert H. Mariner, T. S. Presser, William C. Evans, M.K.W. Pringle
1990, Journal of Geophysical Research (95) 19517-19531
Fluid and heat discharge rates of thermal springs of the Cascade Range have been determined using the chloride inventory method. Discharge rates of thermal spring groups range from 1 to 120 L s−1. Most of the fluid (50%) and heat (61%) are discharged from two hot spring groups in northern...
Action Plan for sea otters
J. A. Estes
P. Foster-Turley, S. Macdonald, C. Mason, editor(s)
1990, Book chapter, Otters. An Action Plan for their Conservation.
No abstract available at this time...
Morphometric validation of the striped mud turtle (Kinosternon baurii) in the Carolinas and Virginia
T. Lamb, J.E. Lovich
1990, Copeia (1990) 613-618
No abstract available....
Producing ducks using wire and electricity
J. T. Lokemoen
1990, South Carolina Waterfowl and Wetlands (4) 8-9
Abstract has not been submitted...
Female participation in courtship behavior of the turtle, Trachemys scripta scripta
J. Lovich, J.W. Garstka, W. Cooper
1990, Journal of Herpetology (24) 422-424
No abstract available....
An expert system for prediction of aquatic toxicity of contaminants
James P. Hickey, Andrew J. Aldridge, Dora R. May Passino, Anthony M. Frank
Judith M. Hushon, editor(s)
1990, Book chapter, Expert systems for environmental applications
The National Fisheries Research Center-Great Lakes has developed an interactive computer program in muLISP that runs on an IBM-compatible microcomputer and uses a linear solvation energy relationship (LSER) to predict acute toxicity to four representative aquatic species from the detailed structure of an organic molecule. Using the SMILES formalism for...
The tip of the iceberg: conservation of riparian commuities through management of the engangered least Bell's vireo
B.E. Kus
1990, Conference Paper
No abstract available at this time...
Bird censuses 77-82: Kentucky bluegrass prairie and mixed prairies I-V
Douglas H. Johnson, M.D. Schwartz
1990, Journal of Field Ornithology (61) 73-75
Abstract has not been submitted...
Planning for global climate change research: an example from Sequoia and Kings Canyon National Parks
D.J. Parsons, D.M. Graber, N.L. Stephenson
1990, George Wright Society Forum (6) 1-9
Disease control: Rx for ailing waterfowl
K.E. Roertgen, R. M. Windingstad
1990, Minnesota Volunteer (53) 24-31
Status of the least Bell's vireo at the Tijuana River, San Diego County, 1990
B.E. Kus
1990, Report
No abstract available at this time...
A roof rat bait station that excludes deer mice
W.A. Erickson, R.E. Marsh, W. L. Halvorson
1990, Wildlife Society Bulletin (18) 319-325
