Institutional issues affecting the integration and use of remotely sensed data and geographic information systems
D. T. Lauer, J. E. Estes, J.R. Jensen, D. D. Greenlee
1991, Photogrammetric Engineering and Remote Sensing (57) 647-654
The developers as well as the users of remotely sensed data and geographic information system (GIS) techniques are associated with nearly all types of institutions in government, industry, and academia. Individuals in these various institutions often find the barriers to accepting remote sensing and GIS are not necessarily technical in...
Geochemical recognition of a captured back-arc basin metabasaltic complex, southwestern Oregon
M. M. Donato
1991, Journal of Geology (99) 711-728
An extensive fault-bounded amphibolite terrane of Late Jurassic () metamorphic age occurring in the northeastern Klamath Mountains of southern Oregon has been recognized as the remnants of an ancient back-arc basin. In spite of thorough metamorphic recrystallization under...
Seismic response of transamerical building. I. Data and preliminary analysis
M. Çelebi, E. Safak
1991, Journal of Structural Engineering (117) 2389-2404
The objective of this paper is to present preliminary analyses of a set of acceleration response records obtained during the October 17, 1989 Loma Prieta earthquake (Ms = 7.1) from the 60-story vertically tapered, pyramid-shaped Trans-america Building-a landmark of San Francisco. The building was instrumented in 1985 with 22 channels...
The last interglaciation in Alaska: Stratigraphy and paleoecology of potential sites
T. D. Hamilton, J. Brigham-Grette
1991, Quaternary International (10-12) 49-71
At least 20 localities in Alaska contain deposits that may provide information on the last interglaciation (Oxygen-Isotope Substage 5e). These widely dispersed localities include river bluffs, coastal bluffs and terraces, elevated marine shorelines, lake basins, and artificial excavations. Most of the inferred interglacial deposits contain macrofossils or pollen that are...
Wading measurements of vertical velocity profiles
R.D. Jarrett
1991, Geomorphology (4) 243-247
Increasingly, there is a recognized need to enhance research of hydraulic, geomorphic and sediment-transport processes in rivers. This research often includes studies of the velocity distribution in rivers. This paper describes the use of the topsetting wading rod and a table and...
Strontium isotopic constraints on the origin of ore-forming fluids of the Viburnum Trend, southeast Missouri
J.C. Brannon, F.A. Podosek, J.G. Viets, D. L. Leach, M. Goldhabe, E. L. Rowan
1991, Geochimica et Cosmochimica Acta (55) 1407-1419
We have measured 87Sr86Sr">87Sr86Sr and Rb and Sr concentrations in several minerals, primarily sulfides, spanning the paragenesis of hydrothermal mineralization in the Viburnum Trend in southeast Missouri. Separate measurements were made for fluid inclusions opened by crushing or thermal decrepitation and for the solids. For comparison,...
Differentiation of colloidal and dissolved silica: Analytical separation using spectrophotometry and inductively coupled plasma atomic emission spectrometry
A. Lewis-Russ, J. Ranville, A.T. Kashuba
1991, Analytica Chimica Acta (249) 509-511
A method is described that differentiates between solutions containing silica-dominated colloids and solutions that are essentially free of colloids. Suspensions of tuff particles were treated to remove colloids by centrifugation, filtration or both. Agreement of silica concentrations determined by inductively coupled plasma atomic emission spectrometry and by a spectrophotometric method...
Effects of lead shot ingestion on selected cells of the mallard immune system
Tonie E. Rocke, M.D. Samuel
1991, Journal of Wildlife Diseases (27) 1-9
The immunologic effects of lead were measured in game-farm mallards (Anas platyrhynchos) that ingested lead shot while foraging naturally, mallards intubated with lead shot, and unexposed controls. Circulating white blood cells (WBC) declined significantly in male mallards exposed to lead by either natural ingestion or intubation, but not females. Spleen...
The first Tertiary (Paleocene) marine mollusks from the Eureka Sound Group, Ellesmere Island, Canada
L. Marincovich Jr., W.J. Zinsmeister
1991, Journal of Paleontology (65) 242-248
The gastropod Drepanochilus pervetus (Stanton) and the bivalve Cytrodaria rutupiensis (Morris) occur in the Mount Moore Formation at Strathcona Fiord, west-central Ellesmere Island, northern Canada. They are the first marine mollusks identified from the Eureka Sound Group of the Canadian arctic islands. These mollusks correlate with Paleocene faunas of...
Captive breeding and reintroduction of the endangered masked bobwhite
J. W. Carpenter, R. R. Gabel, J.G. Goodwin
1991, Zoo Biology (10) 439-449
Efforts to restore the endangered masked bobwhite (Colinus virginianus ridgwayi) to its former range have required 1) habitat acquisition, restoration, and preservation; 2) captive propagation; and 3) reintroduction of captive-bred stock. In its role to recover the masked bobwhite, the Patuxent Wildlife Research Center (U.S. Fish and Wildlife Service) has...
Numerical assessment of a landfill compliance limit
Bruce R. Hensel, Donald A. Keefer, Robert A. Griffin, Richard Berg
1991, Groundwater (29) 218-224
The PLASM and Random Walk ground-water flow and contaminant transport models were used to assess the potential impact of various proposed regulatory compliance distances on landfill siting. Contaminant transport modeling was performed for 16 generalized geological sequences representative of hydrogeological conditions over an estimated 90...
Some current themes in physical hydrology of the land-atmosphere interface
P. C. D. Milly
1991, Conference Paper, IAHS Publication (International Association of Hydrological Sciences)
Certain themes arise repeatedly in current literature dealing with the physical hydrology of the interface between the atmosphere and the continents. Papers contributed to the 1991 International Association of Hydrological Sciences Symposium on Hydrological Interactions between Atmosphere, Soil and Vegetation echo these themes, which are discussed in this paper. The...
Fluid inclusions and preliminary studies of hydrothermal alteration in core hole PLTG-1, Platanares geothermal area, Honduras
K.E. Bargar
1991, Journal of Volcanology and Geothermal Research (45) 147-160
The Platanares geothermal area in western Honduras consists of more than 100 hot springs that issue from numerous hot-spring groups along the banks or within the streambed of the Quebrada de Agua Caliente (brook of hot water). Evaluation of this geothermal area included drilling a 650-m deep PLTG-1 drill hole...
Comparison of three different methods to merge multiresolution and multispectral data: Landsat TM and SPOT panchromatic
P.S. Chavez Jr., S.C. Sides, J.A. Anderson
1991, Photogrammetric Engineering and Remote Sensing (57) 295-303
The merging of multisensor image data is becoming a widely used procedure because of the complementary nature of various data sets. Ideally, the method used to merge data sets with high-spatial and high-spectral resolution should not distort the spectral characteristics of the high-spectral resolution data. This paper compares the results...
The collision zone between the North d'Entrecasteaux Ridge and the New Hebrides island arc. 2. Structure from multichannel seismic data
M. A. Fisher, J.-Y. Collot, E.L. Geist
1991, Journal of Geophysical Research (96) 4479-4495
The d'Entrecasteaux zone (DEZ) collides with the central New Hebrides island arc and consists of two subparallel ridges that strike east-west, stand 1–2 km above the surrounding oceanic plate, and subduct obliquely (15°) northward beneath the arc. Rocks dredged from the north ridge as well...
Fractal analysis of multiscale spatial autocorrelation among point data
L. De Cola
1991, Environment and Planning A (23) 545-556
The analysis of spatial autocorrelation among point-data quadrats is a well-developed technique that has made limited but intriguing use of the multiscale aspects of pattern. In this paper are presented theoretical and algorithmic approaches to the analysis of aggregations of quadrats at or above a given density, in which these...
Source of atrazine and desethylatrazine in a river, during base flow
Paul J. Squillace, E. Michael Thurman, Edward E. Fischer, Phil J. Soenksen
1991, Conference Paper
A budget of atrazine and desethylatrazine loads was computed for a 116-kilometer reach of the Cedar River in Iowa to determine where these compounds enter the river during base-flow conditions. Loads were determined by measuring discharge and concentrations of the compounds for four main-stem sites along the Cedar River and...
Early evolution of Tubulogenerina during the Paleogene of Europe
T. G. Gibson, V. Barbin, A. Poignant, K. Sztrakos
1991, Journal of Foraminiferal Research (21) 299-312
The early evolution of Tubulogenerina took place in Europe where eight species occur in lower Eocene to uppermost Oligocene or lower Miocene strata. Species diversity within Tubulogenerina dropped significantly in the early Oligocne; only a single species persisted from the late Eocene, and it became extinct before the end of...
Fate of acetone in an outdoor model stream with a nitrate supplement, southern Mississippi, U.S.A.
R. E. Rathbun, D. W. Stephens, D. Y. Tai
1991, Journal of Hydrology (123) 225-242
The fate of acetone in an outdoor model stream to which nitrate was added as a nutrient supplement was determined. The stream, in southern Mississippi, U.S.A. was 234 m long. Water was supplied to the stream by an artesian well at about 1.21 s−1, resulting in a mean water velocity...
Cenozoic prograding sequences of the Antarctic continental margin: a record of glacio-eustatic and tectonic events
A. K. Cooper, P. J. Barrett, K. Hinz, V. Traube, G. Letichenkov, H.M.J. Stagg
1991, Marine Geology (102) 175-213
Sedimentary sections up to 6-14 km thick lie beneath many areas of the Antarctic continental margin. The upper parts of the sections contain up to 6 km of Cenozoic glacial and possibly non-glacial sequences that have prograded the continental shelf up to 85 km. We describe the Cenozoic sequences using...
Biomarkers in Tertiary mélange, western Olympic Peninsula, Washington, U.S.A.
Keith A. Kvenvolden, Frances D. Hostettler, John B. Rapp, Parke D. Snavely Jr.
1991, Chemical Geology (93) 101-110
Middle Eocene to middle Miocene mélange and broken formations are exposed in the coastal outcrops along the west side of the Olympic Peninsula, Washington. A petroleum geochemical assessment of these geologic units has included the investigation of biomarker compounds. A comparison was made of biomarkers in an oil sample from...
Geochemistry of a Tertiary sedimentary phosphate deposit: Baja California Sur, Mexico
D.Z. Piper
1991, Chemical Geology (92) 283-316
The San Gregorio Formation in Baja California Sur, a phosphate-enriched sedimentary unit of late Oligocene to early Miocene age, has been analyzed in two areas (La Purisima and San Hilario) for its chemical composition (major oxides, Cu, Cd, Cr, Co, V, and rare-earth elements - REE) and isotopic composition (??18O...
Volcanic episodes near Yucca Mountain as determined by paleomagnetic studies at Lathrop Wells, Crater Flat, and Sleeping Butte, Nevada
Duane E. Champion
Anon, editor(s)
1991, Conference Paper, High Level Radioactive Waste Management
It has been suggested that mafic volcanism in the vicinity of Yucca Mountain, Nev., is both recent (20 ka) and a product of complex 'polycyclic' eruptions. This pattern of volcanism, as interpreted by some workers at the Lathrop Wells volcanic complex, comprises a sequence of numerous small-volume eruptions that become...
Geochemistry of dissolved inorganic carbon in a Coastal Plain aquifer. 2. Modeling carbon sources, sinks, and δ13C evolution
Peter B. McMahon, Francis H. Chapelle
1991, Journal of Hydrology (127) 109-135
Stable isotope data for dissolved inorganic carbon (DIC), carbonate shell material and cements, and microbial CO2 were combined with organic and inorganic chemical data from aquifer and confining-bed pore waters to construct geochemical reaction models along a flowpath in the Black Creek aquifer of South Carolina. Carbon-isotope fractionation between DIC and...
Wasatch fault zone, Utah - segmentation and history of Holocene earthquakes
Michael N. Machette, Stephen F. Personius, Alan R. Nelson, David P. Schwartz, William R. Lund
1991, Journal of Structural Geology (13) 151-164
The Wasatch fault zone (WFZ) forms the eastern boundary of the Basin and Range province and is the longest continuous, active normal fault (343 km) in the United States. It underlies an urban corridor of 1.6 million people (80% of Utah's population) representing the largest earthquake risk in the interior...
