Ground-water contamination near a uranium tailings disposal site in Colorado
Daniel J. Goode, Russell J. Wilder
1987, Ground Water (25) 545-554
Contaminants from uranium tailings disposed of at an active mill in Colorado have seeped into the shallow ground water onsite. This ground water discharges into the Arkansas River Valley through a superposed stream channel cut in the resistant sandstone ridge at the edge of a synclinal basin. In the river...
Elephant teeth from the western Gulf of Maine and their implications
R. N. Oldale, F.C. Whitmore Jr., J.R. Grimes
1987, National Geographic Research (3) 339-446
No abstract available....
Crustal extension along a rooted system of imbricate low-angle faults: Colorado River extensional corridor, California and Arizona
Keith A. Howard, B.E. John
1987, Geological Society Special Publication (28) 299-311
The upper 10 to 15 km of crystalline crust in the 100-km-wide Colorado River extensional corridor of mid-Tertiary age underwent extension along an imbricate system of gently dipping normal faults. Detachment faults cut gently down-section eastward in the direction of tectonic transport from a headwall breakaway, best expressed in the...
Correlation of early Cretaceous blueschists in Washington, Oregon and northern California
E. H. Brown, M.C. Blake Jr.
1987, Tectonics (6) 795-806
The protolith and metamorphic histories of Early Cretaceous blueschists that occur in Washington, Oregon, and California are remarkably similar. These blueschists are the Shuksan metamorphic suite of northwestern Washington, the Condrey Mountain schist of northern California and southern Oregon, and the Pickett Peak terrane of northern California and southwestern Oregon....
Remagnetization of the Coast Range Ophiolite and Lower Part of the Great Valley Sequence in Northern California and Southwest Oregon
L.S. Frei, M. Clark Blake Jr.
1987, Journal of Geophysical Research B: Solid Earth (92) 3487-3499
Overprinted magnetizations have been found at four localities in the Middle Jurassic Coast Range ophiolite and the overlying Upper Jurassic and Lower Cretaceous Great Valley sequence in northern California and at one locality in the partially correlative Lower Cretaceous Days Creek Formation in southwest Oregon. At Del Puerto Canyon, on...
Wetland changes in coastal Alabama
E. Randy Roach, Mary C. Watzin, James D. Scurry, James B. Johnston
1987, Conference Paper, Symposium on the Natural Resources of the Mobile Bay Estuary, February, 1987
The significance of observations at active volcanoes; A review and annotated bibliography of studies at Kilauea and Mount St. Helens
Thomas L. Wright, Don Swanson
1987, Geochemical Society Special Publication (1) 231-240
Study of active volcanoes yields information of much broader significance than to only the discipline of volcanology. Some applications are 1) interpretation of lava-flow structures, stratigraphic complexities, and petrologic relations in older volcanic units; 2) interpretation of bulk properties of the mantle and constraints on partial melting and deep magma...
Geomorphic and hydrologic dynamics of zero-order basins
Richard M. Iverson
1987, Eos, Transactions, American Geophysical Union (68) 1808-1808
The 1987 International Symposium on Erosion and Sedimentation in the Pacific Rim, held August 3–7, 1987, in Corvallis, Oreg., included a special session on the geomorphic and hydrologic dynamics of zero-order drainage basins. “Zero-order basin” is one of several terms used to describe unchanneled swales or hollows...
Hawaii Volcano Observatory 75th anniversary
Thomas L. Wright, R. Decker
1987, Eos, Transactions, American Geophysical Union (68) 570-570
The 75th anniversary of the founding of the U.S. Geological Survey (USGS) Hawaiian Volcano Observatory (HVO) was celebrated during January 1987. The festivities began on January 9 with the opening in Hilo of a major exhibit at the Wailoa Center on the current work of HVO, its history, and its...
Dinosaurs, pollen and spores, and the age of the Ojo Alamo Sandstone, San Juan Basin, New Mexico
James E. Fassett, S. G. Lucas, F.M. O’Neill
1987, GSA Special Papers (209) 17-34
The Ojo Alamo Sandstone of the San Juan Basin of New Mexico is composed of interbedded conglomeratic sandstone, sandstone, siltstone, and mudstone. Conglomerates are found in the western part of the basin; siliceous pebbles diminish in size both southward and eastward across the basin, becoming rare to nonexistent in the...
The ages of the continental, Upper Cretaceous, Fruitland Formation and Kirtland Shale based on a projection of ammonite zones from the Lewis Shale, San Juan Basin, New Mexico and Colorado
James E. Fassett
1987, GSA Special Papers (209) 5-16
The Kirtland Shale or Fruitland Formation directly underlies the Cretaceous-Tertiary boundary throughout most of the San Juan Basin of northwest New Mexico and southwest Colorado. These formations have been known to be Late Cretaceous in age since the early 1900s. Now, with the greatly renewed interest in rocks adjacent to...
Effect of crustal layering upon dislocation modeling
James C. Savage
1987, Journal of Geophysical Research B: Solid Earth (92) 10595-10600
Slip distribution at depth on a fault may be inferred from the deformation observed on the surface. In inverting the surface deformation data to obtain the slip distribution, the Earth is generally approximated by an elastic half‐space. Slip distributions inferred from a half‐space model may contain artifacts, including zones of...
Yukon Flats National Wildlife Refuge land cover mapping project user's guide
Carl J. Markon
1987, Report
Title III of the Alaska National Interest Lands Conservation Act (ANILCA, 1980) established the Yukon Flats National Wildlife Refuge (YFNWR). Section 304 of the Act requires the Secretary of Interior to "prepare, and from time to time revise, a comprehensive conservation plan" for the refuge. Before developing a plan for...
Use of the bottomland hardwoods subset of the wetland values data base
Gregor T. Auble
1987, Report
This report documents a bibliographic data base concerning functions and values of bottomland hardwoods and similarly vegetated areas. This data base is being provided for a limited time (until September 30, 1988) as a supplement to the publication entitled "Synopsis of Wetland Functions and Values: Bottomland Hardwoods with Special Emphasis...
Anaerobic production of magnetite by a dissimilatory iron-reducing microorganism
Derek R. Lovley, J.F. Stolz, Gordon L. Nord Jr., Elizabeth J.P. Phillips
1987, Nature (330) 252-254
The potential contribution of microbial metabolism to the magnetization of sediments has only recently been recognized. In the presence of oxygen, magnetotactic bacteria can form intracellular chains of magnetite while using oxygen or nitrate as the terminal electron acceptor for metabolism1. The production of ultrafine-grained magnetite by magnetotactic bacteria in...
Real-time landslide warning during heavy rainfall
David K. Keefer, R. C. Wilson, R. K. Mark, E. E. Brabb, W. M. Brown III, S. D. Ellen, E. L. Harp, G. F. Wieczorek, C.S. Alger, R.S. Zatkin
1987, Science (238) 921-925
A real-time system for issuing warnings of landslides during major storms is being developed for the San Francisco Bay region, California. The system is based on empirical and theoretical relations between rainfall and landslide initiation, geologic determination of areas susceptible to landslides, real-time monitoring of a regional network of telemetering...
Effects of wetland channelization of storm runoff in Lambert Creek, Ramsey County, Minnesota
R. G. Brown
1987, Conference Paper, National Wetlands Symposium of Wetland Hydrology, Chicago, Illinois, September 16-18, 1987 [Proceedings]
No abstract available....
Selenium in aquatic organisms from subsurface agricultural drainage water, San Joaquin Valley, California
Michael K. Saiki, T. Peter Lowe
1987, Archives of Environmental Contamination and Toxicology (16) 657-670
Concentrations of total selenium were high in 1983 in water, sediment, organic detritus, aquatic plants and invertebrates, and mosquitofish (Gambusia affinis) from Kesterson Reservoir (San Joaquin Valley, California) and the San Luis Drain. Selenium concentrations in biota from the Reservoir and Drain (referred to here collectively as “Kesterson”)...
Small-scale soil maps in the United States as prototypes for handling soils in a global geographic information system
Norman B. Bliss, William U. Reybold
1987, Conference Paper, International Geographic Information Systems (IGIS) Symposium: The research agenda
No abstract available....
Laboratory investigation of longitudinal dispersion in anisotropic porous media
Stephen E. Silliman, Leonard F. Konikow, C.I. Voss
1987, Water Resources Research (23) 2145-2151
In this study, laboratory experiments were used to investigate mechanisms that may cause anisotropy in the dispersion coefficient and to investigate the relation between anisotropy in hydraulic conductivity and anisotropy in longitudinal dispersion. Measurements of sodium chloride concentration (used as a tracer) were made at 105 in situ sampling locations...
Minimum tailwater flows in relation to habitat suitability and sport-fish harvest
K.E. Jacobs, W.D. Swink, J.F. Novotny
1987, North American Journal of Fisheries Management (7) 569-574
The instream flow needs of four sport fishes (rainbow trout Salmo gairdneri, channel catfish Ictalurus punctatus, smallmouth bass Micropterus dolomieui, and white crappie Pomoxis annularis) were evaluated in the tailwater below Green River Lake, Kentucky. The Newcombe method, a simple procedure developed in British Columbia that is based on the...
Toxicity of TFM lampricide to early life stages of walleye
J.G. Seelye
1987, North American Journal of Fisheries Management (7) 598-601
We studied the effects of the lampricide 3-trifluoromethyl-4-nitrophenol (TFM) on gametes, newly fertilized eggs, eyed eggs, larvae, and swim-up fry of the walleye Stizostedion vitreum. When gametes from sexually mature walleyes were stripped into solutions of TFM, no effects were observed during the fertilization process at concentrations up to 3.0...
Geomys bursars burrowing patterns: influence of season and food patch structure
Douglas C. Andersen
1987, Ecology (68) 1306-1318
The relationship between belowground food resources and the pattern and pace of soil excavation by Geomys bursarius, the plains pocket gopher, was assessed during spring and autumn using replicated 18 x 18 m enclosures containing uniform arrays of food plants (Daucus carota) at spacings assumed to result in burrowing being...
Dinosaurs, spherules, and the “magic” layer: A new K-T boundary clay site in Wyoming
B.F. Bohor, Don M. Triplehorn, Douglas J. Nichols, Hugh T. Millard Jr.
1987, Geology (15) 896-899
A new Cretaceous-Tertiary (K-T) boundary clay site has been found along Dogie Creek in Wyoming in the drainage of Lance Creek—the type area of the Lance Formation of latest Cretaceous age. The boundary clay was discovered in the uppermost part of the Lance Formation, 4–7 cm beneath the lowest lignite...
Survival and band recovery rates of sympatric American black ducks and mallards
James D. Nichols, Holliday H. Obrecht III, James E. Hines
1987, Journal of Wildlife Management (51) 700-710
Banding and recovery data from American black ducks (Anas rubripes) and mallards (A. platyrhynchos) banded in the same breeding or wintering areas over the same time periods were used to estimate annual survival and band recovery rates. Recovery rates, based on preseason bandings, were very similar for sympatric black ducks...
