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Environmental trends among Neogene benthic foraminifers at Deep Sea Drilling Project Site 548, Irish continental margin
Claude (Wylie) Poag, Doris Low
1985, Initial reports of the Deep Sea Drilling Project (80) 489-503
An analysis of diversity and abundance trends among all benthic foraminiferal genera and species, and particularly among species of Bolivina, was carried out for 59 samples of Neogene sediment from DSDP-IPOD Site 548, Goban Spur. By correlating these census data with lithological, geophysical, geochemical, and other faunal and floral measurements...
Biostratigraphy, paleoenvironmental, and paleomagnetic synthesis of the Goban Spur region, Deep Sea Drilling Project Leg 80
Scott W. Snyder, C. Muller, Hilary Townsend, Claude (Wylie) Poag
1985, Initial reports of the Deep Sea Drilling Project (80) 1169-1186
A composite stratigraphic section based on the four DSDP-IPOD Leg 80 drill sites provides a nearly complete record of syn-rift and post-rift events in the vicinity of Goban Spur. Syn-rift sediments were deposited in marginal marine to outer shelf environments. Above the "breakup" unconformity (hiatus spanning most of the Aptian),...
The occurrence of extractable elements in soils from the northern Great Plains
J.M. McNeal, R. C. Severson, Larry P. Gough
1985, Soil Science Society of America Journal (49) 873-881
The modes of occurrence of extractable elements from 21 A and C horizon samples of uncultivated soils were examined using R-mode factor analysis. The extractants (DTPA, EDTA, HCl, hydroquinone, magnesium nitrate, and ammonium oxalate) cover a wide range of chemical attack. Four major elements (Ca, K, Mg, and Na) and...
An evaluation of condition indices for birds
Douglas H. Johnson, Gary L. Krapu, Kenneth J. Reinecke, Dennis G. Jorde
1985, Journal of Wildlife Management (49) 569-575
A Lipid Index, the ratio of fat to fat-free dry weight, is proposed as a measure of fat stores in birds. The estimation of the index from field measurements of live birds is illustrated with data on the sandhill crane (Grus canadensis) and greater white-fronted goose (Anser albifrons). Of the...
Authigenic potassium feldspar in Cambrian carbonates: Evidence of Alleghanian brine migration
Paul P. Hearn Jr., John F. Sutter
1985, Science (228) 1529-1531
The shallow-water limestones and dolostones of the Conococheague Limestone (Upper Cambrian) of western Maryland contain large amounts of authigenic potassium feldspar. The presence of halite daughter crystals in breached fluid inclusions, low whole-rock ratios of chlorine to bromine, and thermochemical data suggest that the potassium feldspar formed at low temperature...
Origin and tectonic evolution of the Maclaren and Wrangellia terranes, eastern Alaska Range, Alaska
Warren J. Nokleberg, D. L. Jones, Norman J. Silberling
1985, GSA Bulletin (96) 1251-1270
Major portions of the eastern Alaska Range, south of the Denali fault, in the McCarthy, Nabesna, Mount Hayes, and eastern Healy quadrangles, consist predominantly of the Maclaren and Wrangellia tectono-stratigraphic terranes. The Maclaren terrane consists of the Maclaren Glacier metamorphic belt and the regionally deformed and metamorphosed East Susitna batholith....
Geologic setting, petrology, and geochemistry of stratiform sphalerite-galena-barite deposits, Red Dog Creek and Drenchwater Creek areas, northwestern Brooks Range, Alaska
Ian M. Lange, Warren J. Nokleberg, J.T. Plahuta, H.R. Krouse, B. R. Doe
1985, Economic Geology (80) 1896-1926
Similar stratiform sphalerite-galena-barite deposits occur in the Red Dog Creek area, De Long Mountains quadrangle, and in the Drenchwater Creek area, Howard Pass quadrangle, northwestern Brooks Range, Alaska. The deposits, located approximately 180 km apart, are hosted by Mississippian and Pennsylvanian strata of the Kagvik structural sequence of late Paleozoic...
Water quality and chemical evolution of ground water within the north coast limestone aquifers of Puerto Rico
Angel J. Roman-Mas, Roger W. Lee
1985, Conference Paper, American Water Resources Association, Technical Publication Series TPS-85-1
Waters within the north coastal limestoneaquifers are suitable for public supply, industrial and agricultural uses. For the artesian aquifer and the updip parts of the watertable aquifer, calcium and bicarbonate are the dominant ionic species with total dissolved solids and chloride concentrations below 500 and 250 mg/L, respectively. In coastal areas of...
Mineralogy and geochemistry of a sediment‐hosted hydrothermal sulfide deposit from the Southern Trough of Guaymas Basin, Gulf of California
Randolph A. Koski, P. F. Lonsdale, Wayne C Shanks, M.E. Berndt, S. S. Howe
1985, Journal of Geophysical Research B: Solid Earth (90) 6695-6707
Samples dredged from a 15‐m‐high hydrothermal mound atop the flat turbidite pond in the Southern Trough of Guaymas Basin consist of pyrrhotite‐rich massive sulfide, barite, barite + calcite, talc, and opaline silica as well as substrate material composed of fossiliferous, clay‐rich ooze. An 11‐m‐long sediment core taken near the dredge...
Comparative geochemical and mineralogical studies of two cyclic transgressive pelagic limestone units, cretaceous Western Interior Basin, U.S.
M.A. Arthur, Walter E. Dean, Richard M. Pollastro, George E. Claypool, Peter A. Scholle
1985, SEPM Special Publication 16-27
Pelagic limestone units were deposited in the North American Western Interior seaway during two major Cretaceous transgressive episodes. The Bridge Creek Limestone Member of the Greenhorn Formation, deposited during the Late Cenomanian-Early Turonian transgression, and the Smoky Hill Member of the Niobrara Formation, deposited during the overall Early Coniacian-Early Campanian...
Evolution and application of instream flow methodologies to small hydropower developments: an overview of the issues
E. Woody Trihey, Clair B. Stalnaker
1985, Book, Symposium on Small Hydro/Fisheries Symposium
ethods for evaluating instream flow needs have evolved over the last 30 years resulting in two categories which are defined as “standard-setting” and “incremental”. Standard-setting methodologies refer to those measurement and interpretative techniques designed to generate a flow value(s) which is intended to maintain the fishery at some acceptable level....
Detection of leaks in buried rural water pipelines using thermal infrared images
Jeffery C. Eidenshink
1985, Photogrammetric Engineering and Remote Sensing (51) 561-564
Leakage is a major problem in many pipelines. Minor leaks called 'seeper leaks', which generally range from 2 to 10 m3 per day, are common and are difficult to detect using conventional ground surveys. The objective of this research was to determine whether airborne thermal-infrared remote sensing could be used...
Mission, goals, and authorities of the U.S. Geological Survey, June 1985
Water Resources Division, U.S. Geological Survey
1985, Report
We live in a society which depends on natural resources. Our high standard of living requires use of the land, water, and mineral endowment of the Earth. In using these resources, we may affect our environment and alter our options for land and resource use in the future. How can...
The aqueous photolysis of ethylene glycol adsorbed on geothite
Kirkwood M. Cunningham, Marvin C. Goldberg, E.R. Weiner
1985, Photochemistry and Photobiology (41) 409-416
Suspensions of goethite (α-FeOOH) were photolyzed in aerated ethylene glycol-water solutions at pH 6.5, with ultraviolet light in the wavelength range300–400 nm. Under these conditions, formaldehyde and glycolaldehyde were detected as photoproducts. Quantum yields of formaldehyde production ranged from 1.9 7times; 10-5 to 2.9 × 10-4 over the ethylene...
An aerial photographic census of Chesapeake Bay and North Carolina canvasbacks
G.M. Haramis, J.R. Goldsberry, D.G. McAuley, E.L. Derleth
1985, Journal of Wildlife Management (49) 449-454
We used conventional 35-mm photography to conduct an aerial photographic census of canvasbacks (Aythya valisineria) throughout Chesapeake Bay (tidal Maryland and Virginia) and coastal North Carolina, 26-30 January 1981. Flock size and sex ratio characteristics were determined from examination of color transparencies of 165 canvasback flocks totaling over 95,000 birds....
A constitutive equation for mass-movement behavior
Richard M. Iverson
1985, Journal of Geology (93) 143-160
A phenomenological constitutive equation can serve as a basis for modeling and classifying mass-movement processes. The equation is derived using the principles of continuum mechanics and several simplifying assumptions about mass-movement behavior. These assumptions represent idealizations of field behavior, but they appear...
Effects of flood control alternatives on fish and wildlife resources of the Malheur-Harney lakes basin
David B. Hamilton, Gregor T. Auble, Richard A. Ellison, James E. Roelle
1985, Report
Malheur Lake is the largest freshwater marsh in the western contiguous United States and is one of the main management units of the Malheur National Wildlife Refuge in southeastern Oregon. The marsh provides excellent waterfowl production habitat as well as vital migration habitats for birds in the Pacific flyway. Water...
Metals in riparian wildlife of the lead mining district of southeastern Missouri
K. R. Niethammer, Richard D. Atkinson, Thomas S. Baskett, Fred B. Samson
1985, Archives of Environmental Contamination and Toxicology (14) 213-223
Five species of riparian vertebrates (425 individuals) primarily representing upper trophic levels were collected from the Big River and Black River drainages in two lead mining districts of southeastern Missouri, 1981–82. Big River is subject to metal pollution via erosion and seepage from large tailings piles from inactive lead mines....
Effects of flow alterations on trout, angling, and recreation in the Chattahoochee River between Buford Dam and Peachtree Creek
John M. Nestler, Robert T. Milhouse, Jay Troxel, Janet A. Fritschen
1985, Report
In 1974 county governments in the Atlanta vicinity realized that demands on the Chattahoochee River for water supply plus the streamflow required for water quality nearly equaled the minimum flow in the river. Increased demands for water supply in the following years could not be supplied under the then existing...
Mid-Atlantic Ridge coccolith and silicoflagellate biostratigraphy, Deep Sea Drilling Project Sites 558 and 563.
David Bukry
1985, Initial Reports of the D.S.D.P. (82) 591-603
Low-latitude coccolith zonation can be used for biostratigraphy at Mid-Atlantic Ridge sites DSDP 558 (lat. 38°N) and DSDP 563 (lat. 34°N). The low-latitude zonal sequence from lower Oligocene to Holocene is interrupted by coolwater assemblages in upper middle Miocene and by hiatuses that removed the lower Pliocene and part of...
Gas hydrates on the northern California continental margin
Michael E. Field, Keith A. Kvenvolden
1985, Geology (13) 517-520
The inner continental margin of northern California is underlain by a well-defined and extensive acoustic reflector that crosses other reflectors and mimics the surface of the sea floor. This bottom-simulating reflector (BSR) lies at a typical subsurface depth of about 250 m and has been mapped continuously beneath the Klamath...