Hydrogeology and ground-water quality of Lannon-Sussex area, northeastern Waukesha County, Wisconsin
R. D. Cotter
1986, Water-Resources Investigations Report 84-4213
The Silurian dolomite aquifer in the Lannon-Sussex area of southeastern Wisconsin is overlain by glacial deposits, but is within 8 ft of the land surface over 15% of the study area. The proximity of the dolomite aquifer to the land surface makes it susceptible to contamination from man 's activities....
Patterns and causes of change in a cliff swallow colony during a 17-year period
Gary L. Krapu
1986, Prairie Naturalist (18) 109-114
The number of cliff swallow (Petrochelidon pyrrhonata) nests at a farmstead in southeastern North Dakota increased at an average annual rate of 87% with house sparrow (Passer domesticus) removal during 1957-60 and 1970-72. Harassment of nesting cliff swallows by house sparrows, adult swallow mortality from cold weather in late May,...
Paleomagnetism of the Tertiary Clarno Formation of central Oregon and its significance for the tectonic history of the Pacific Northwest
C. Sherman Gromme, Myrl E. Beck Jr., Ray E. Wells, David C. Engebretson
1986, Journal of Geophysical Research B: Solid Earth (91) 14089-14103
The Clarno Formation, a mostly Eocene and partly early Oligocene sequence of andesitic lavas and volcaniclastic rocks, is the oldest Tertiary formation exposed in north central Oregon. Remanent magnetization directions at 46 sites in the lavas provide a paleomagnetic pole at 84°N, 278°E with a 95% confidence cone of 7°....
Relationship of grade, tonnage, and basement lithology in volcanic-hosted epithermal precious-and base-metal quartz-adularia-type districts
D.L. Mosier, Donald A. Singer, T. Sato, N.J. Page
1986, Mining Geology (36)
Examination of grades, tonnages, and basement rocks for 88 epithermal precious- and base-metal quartz-adularia-type districts in North, Central, and South America, and Japan reveals that the type of basement rock below the mineralized veins is useful for predicting grade and size of deposits. Epithermal districts overlying basement with salt and...
Interpretation and compendium of historical fire accounts in the Northern Great Plains
K.F. Higgins
1986, Resource Publication 161
This interpretation and compendium of historical fire accounts in the northern Great Plains provides resource managers with background information to justify the study or use of fire in management and provides a reference of historic fire accounts for those without ready access to major library collections. Historical accounts of fire...
Regional method to assess offshore slope stability.
H.J. Lee, B. D. Edwards
1986, Journal of Geotechnical Engineering (112) 489-509
The slope stability of some offshore environments can be evaluated by using only conventional acoustic profiling and short-core sampling, followed by laboratory consolidation and strength testing. The test results are synthesized by using normalized-parameter techniques. The normalized data are then used to calculate the critical earthquake acceleration factors or the...
Improved method for correlating late Pleistocene/Holocene records from the Bering Sea: Application of a biosiliceous/geochemical stratigraphy
J. J. Morley, Stephen Robinson
1986, Deep Sea Research Part A, Oceanographic Research Papers (33) 1203-1211
The combination of high-resolution siliceous biostratigraphy and radiocarbon dating provides a mechanism for detailed assessment of the depositional history in late Pleistocene sediments from the Bering Sea where average accumulation rates are uncharacteristically high compared to rates calculated for most other ocean basins. Vital to the development of this stratigraphy...
Coincidence and spatial variability of geology, soils, and vegetation, Mill Run watershed, Virginia
C.G. Olson, C.R. Hupp
1986, Earth Surface Processes and Landforms (11) 619-629
The Mill Run watershed is a structurally‐controlled synclinal basin on the eastern limb of the Massanutten Mountain complex of northwestern Virginia. Bedrock contacts are obscured by coarse sandstone debris from exposures near basin divides. Colluvium blankets more than half the basin, masking geomorphic surfaces, affecting vegetation...
Applications of Landsat data and the data base approach
D. T. Lauer
1986, Photogrammetric Engineering and Remote Sensing (52) 1193-1199
A generalized methodology for applying digital Landsat data to resource inventory and assessment tasks is currently being used by several bureaux and agencies within the US Department of the Interior. The methodology includes definition of project objectives and output, identification of source materials, construction of the digital data base, performance...
Recent patterns of sulfate variability in pristine streams
H.F. Lins
1986, Atmospheric Environment - Part A General Topics (20) 367-375
Systematic modes of spatial and temporal variation in a 13-y record of stream sulfate from a nationwide network of headwater sampling stations are defined using principal components. Based on the undisturbed nature of the sampling network, it is suggested that these modes of stream sulfate variability are analogues for variations...
Effect of ground-water recharge on configuration of the water table beneath sand dunes and on seepage in lakes in the sandhills of Nebraska, U.S.A.
T. C. Winter
1986, Journal of Hydrology (86) 221-237
Analysis of water-level fluctuations in about 30 observation wells and 5 lakes in the Crescent Lake National Wildlife Refuge in the sandhills of Nebraska indicates water-table configuration beneath sand dunes in this area varies considerably, depending on the configuration of the topography of the dunes. If the topography of an...
Isolation and detection of Giardia cysts from water using direct immunofluorescence
Stephen K. Sorenson, John L. Riggs, Peter D. Dileanis, Thomas J. Suk
1986, Water Resources Bulletin (22) 843-845
A water‐sampling apparatus used for the isolation and detection of Giardiacysts in water has been designed and tested. The sampling apparatus uses one of a variety of pumps or waterline pressure to move water through a filter. Two of the optional pumps are lightweight enough to make the apparatus portable and...
Nonlinear-regression groundwater flow modeling of a deep regional aquifer system
Richard L. Cooley, Leonard F. Konikow, Richard L. Naff
1986, Water Resources Research (22) 1759-1778
A nonlinear regression groundwater flow model, based on a Galerkin finite-element discretization, was used to analyze steady state two-dimensional groundwater flow in the areally extensive Madison aquifer in a 75,000 mi2 area of the Northern Great Plains. Regression parameters estimated include intrinsic permeabilities of the main aquifer and separate lineament zones,...
Changing concepts of geologic structure and the problem of siting nuclear reactors: Examples from Washington State
R. W. Tabor
1986, Geology (14) 738-742
The conflict between regulation and healthy evolution of geological science has contributed to the difficulties of siting nuclear reactors. On the Columbia Plateau in Washington, but for conservative design of the Hanford reactor facility, the recognition of the little-understood Olympic-Wallowa lineament as a...
Research on polar bears in Alaska, 1983-1985
Steven C. Amstrup
1986, Conference Paper, Polar bears: Proceedings of the ninth working meeting of the IUCN/SSC Polar Bear Specialist Group
Research on the ecology and status of polar bear populations in Alaska has continued since 1967. Research was a joint U.S. Fish and Wildlife Service/Alaska Department of Fish and Game effort until passage of the Marine Mammal Protection Act in 1972, and has been largely a Federal effort since then....
THEORETICAL AND EXPERIMENTAL ASPECTS OF ISOTOPIC FRACTIONATION.
James R. O’Neil
1986, Reviews in Mineralogy (16) 1-40
Essential to the interpretation of natural variations of light stable isotope ratios is knowledge of the magnitude and temperature dependence of isotopic fractionation factors between the common minerals and fluids. These fractionation factors are obtained in three ways: (1) Semi-empirical calculations using spectroscopic data and the methods of statistical mechanics....
Estimating limiting age for pleistocene erosional surfaces in central Montana by uranium-series dating of associated travertines
Barney J. Szabo, D. A. Lindsey
1986, Earth Surface Processes and Landforms (11) 223-228
Travertine deposits overlie the highest Number 2 surfaces in central Montana and clasts of travertine occur in gravels on lower Number 2 surfaces. Dating these travertine deposits may provide limits on the ages of surfaces that record intervals of extensive erosion during Pleistocene time. Analysis of three travertine samples from...
NORMATIVE MINERALOGY OF OIL SHALE IN THE JUHAN CORE HOLE 4-1, PICEANCE CREEK BASIN, COLORADO.
John R. Dyni, James W. Baker, Wayne Mountjoy
Gary James H., editor(s)
1986, Conference Paper, Oil Shale Symposium Proceedings
A procedure for calculating the quantities of normative minerals and kerogen in Colorado oil shale was developed and used to analyze a sequence of sodium-rich oil shales in a core hole near the depocenter of the Piceance Creek Basin in northwestern Colorado. The sequence of oil shales was found to...
Palladium, platinum, and rhodium contents of rocks near the lower margin of the Stillwater complex, Montana
M. L. Zientek, M. P. Foose, Mei Leung
1986, Economic Geology (81) 1169-1178
SPalladium, platinum, and rhodium concentrations are reported for rocks belonging to the Peridotite zone of the Ultramafic series and the Basal series of the late Archcan Stillwater Complex, a suite of Stillwater-associated sills and dikes, and the metamorphic rocks lying within the contact aureole of the complex. Mean values do...
Eureka Quartzite in Mexico? - Tectonic implications
K. B. Ketner
1986, Geology (14) 1027-1030
At Cerro Cobachi, 90 km east of Hermosillo, Sonora, an Ordovician to Permian miogeoclinal assemblage and an Ordovician to Permian siliceous deep-water assemblage were juxtaposed by thrust faulting between mid-Permian and latest Cretaceous time. Both assemblages resemble counterparts in the Great Basin. One...
Submarine fissure eruptions and hydrothermal vents on the southern Juan de Fuca Ridge: preliminary observations from the submersible Alvin
W. R. Normark
1986, Geology (14) 823-827
The submersible Alvin was used to investigate 3 active hydrothermal discharge sites along the S Juan de Fuca Ridge in September 1984. The hydrothermal zones occur within a 10-30m-deep, 30-50m-wide cleft marking the center of the axial valley. This cleft is the eruptive locus for the axial valley. The hydrothermal...
An experimental study of subaqueous slipface deposition
R. E. Hunter, G. Kocurek
1986, Journal of Sedimentary Petrology (56) 387-394
A flume study indicates that grainflow on slipfaces accounts for most cross-strata formed in unidirectional, shallow-water flows. The slipfaces studied were on small megaripples and delta-like steps (0.06-0.28 m high). During intermittent avalanching, at relatively low flow velocities, periods between avalanches were marked...
Downstream effects of Flaming Gorge Reservoir on the Green River, Colorado and Utah
E.D. Andrews
1986, Geological Society of America Bulletin (97) 1012-1023
The Green River is one of the principal tributaries in the Colorado River basin and drains 44,700 m2 in Wyoming, Colorado, and Utah. Since October 1962, flows of the Green River have been regulated by Flaming Gorge Reservoir, which is located 412 river miles upstream from its confluence with the Colorado...
Late Triassic paleogeography of the southern Cordillera: The problem of a source for voluminous volcanic detritus in the Chinle Formation of the Colorado Plateau region
John H. Stewart, T.H. Anderson, G.B. Hazel, L. T. Silver, J.E. Wright
1986, Geology (14) 567-570
The Upper Triassic Chinle Formation of the Colorado Plateau contains voluminous volcanic detritus evidently derived from a source to the south. Volcanic rocks exposed in southern Arizona and northern Sonora have been assumed to represent this source terrane, but U-Pb isotopic geochronology and...
BROAD SPECTRUM ANALYSIS FOR TRACE ORGANIC POLLUTANTS IN LARGE VOLUMES OF WATER BY XAD RESINS-COLUMN DESIGN-FACTS AND MYTHS.
J. Gibs, A. Wicklund, I.H. Suffet
1986, Conference Paper, National Meeting - American Chemical Society, Division of Environmental Chemistry
The 'rule of thumb' that large volumes of water can be sampled for trace organic pollutants by XAD resin columns which are designed by small column laboratory studies or pure compounds is examined and shown to be a problem. A theory of multicomponent breakthrough is presented as a frame of...
