Internal structural variations in a debris-avalanche deposit from ancestral Mount Shasta, California, USA
T. Ui, H. Glicken
1986, Bulletin of Volcanology (48) 189-194
Various parameters of the internal structure of a debris-avalanche deposit from ancestral Mount Shasta (size and percentage of block facies in each exposure, number and width of jigsaw cracks, and number of rounded clasts in matrix facies) were measured in order to study flow and emplacement mechanisms. Three types of...
PERSPECTIVE ON LANDSLIDE DAMS.
Robert L. Schuster, John E. Costa
Schuster Robert L., editor(s)
1986, Conference Paper
The most common types of mass movements that form landslide dams are rock and soil slumps and slides; mud, debris, and earth flows: and rock and debris avalanches. The most common initiation mechanisms for dam-forming landslides are excessive rainfall and snow melt, and earthquakes. Most landslide dams are remarkable short-lived....
U. S. GEOLOGICAL SURVEY'S SIDE-LOOKING AIRBORNE RADAR PROGRAM: THE ALASKAN CONNECTION.
Allan N. Kover, John Edwin Jones, Stephen J. Gawarecki
1986, Conference Paper, Technical Papers of the American Society of Photogrammetry, Fall Technical Meeting
The U. S. Geological Survey (USGS) has become a major source of side-looking airborne radar (SLAR) data as a result of a Congressional mandate in 1980 to 'begin the use of side-looking airborne radar for topographic and geologic mapping, and geological resource surveys in promising areas, particularly Alaska. ' In...
Development of labd cover and terrain databases for the Innoko National Wildlife Refuge, Alaska, using LANDSAT and digital terrain data
Carl J. Markon, Stephen S. Talbot
1986, Conference Paper, Technical Papers of the American Society of Photogrammetry, Fall Technical Meeting
Landsat-derived land cover maps and associated elevation, slope, and aspect class maps were produced for the Innoko National Wildlife Refuge (3,850,000 acres; 1,555,095 hectares) in northwestern Alaska. These maps and associated digital data products are being used by the U. S. Fish and Wildlife Service for wildlife management, research, and...
USGS NATIONAL MAPPING PROGRAM IN ALASKA--A STATUS REPORT.
Bruce Y. Mckenzie, Lowell E. Starr
1986, Conference Paper, Technical Papers of the American Society of Photogrammetry, Fall Technical Meeting
The U. S. Geological Survey has been involved in mapping in Alaska since the late 1800's. The initial mapping projects were principally in support of geologic or hydrologic studies. In the late 1940's, responsibility for Alaska mapping was assigned to the Geological Survey's Rocky Mountain Mapping Center and a comprehensive...
Seed predation by yucca moths on semelparous, iteroparous and vegetatively reproducing subspecies of Yucca whipplei (Agavaceae)
Jon E. Keeley, Sterling C. Keeley, D. A. Ikeda
1986, American Midland Naturalist (115) 1-9
Yucca whipplei subspecies are distinguished by differences in reproduction: spp. whipplei and ssp. parishii are semelparous, flowering once and dying; ssp. caespitosa is iteroparous, producing multiple rosettes which may flower in different years; ssp. percursa has clonal reproduction from rhizomes, and ssp. intermedia is intermediate to the latter two. Seed...
Mineralogical and geochemical maps showing the distribution of selected minerals and elements found in the minus-80-mesh stream-sediment and related minus-30-mesh heavy-mineral-concentrate samples from the Circle quadrangle, Alaska
Richard B. Tripp, William D. Crim, James D. Hoffman, Richard M. O’Leary, Donald A. Risoli
1986, Open-File Report 83-170-F
No abstract available....
Introduction
M.M. Smart, S.J. Lubinski, R. A. Schnick
M.M. Smart, S.J. Lubinski, R. A. Schnick, editor(s)
1986, Book chapter, Ecological perspectives of the upper Mississippi River
Abstract not submitted to date...
The boundary model: A geographical analysis of design and conservation of nature reserves
C. Schonewald-Cox, J.W. Bayless
1986, Biological Conservation (38) 305-322
It is widely recognised that nearly all parks and reserves are too small to protect their biological diversity. In response to this problem, we have been developing a multidisciplinary ‘boundary model’ that focuses upon the processes of exchange across the administrative edges of nature reserves. The model incorporates known dynamics...
Analytical results and sample locality map for stream-sediment and panned-concentrate samples from the Palisade Mesa and the Wall Wilderness Study Areas (NV-060-142/162 and NV-060-163), Nye County, Nevada
D. F. Siems, J. D. Sharkey, R. E. Tucker
1986, Open-File Report 86-113
No abstract available....
Late Cretaceous stratigraphy, deformation and intrusion in the Madison Range of southwestern Montana ( USA).
R. G. Tysdal, R. F. Marvin, E. Dewitt
1986, Geological Society of America Bulletin (97) 859-868
Dating of orogenic rock units in the central part of the Madison Range shows that Laramide deformation was virtually completed by the end of the Cretaceous. Early Campanian K-Ar dates of about 79 m.y. were obtained from welded tuffs in the basal part of the Livingston Formation, a volcanic and...
Map of landfill locations, 1986
K.J. Lanfear
1986, Report
This is a point coverage of landfills shown in the 1986 National Water Summary Report (U.S. Geological Survey, 1987)....
ANALYSIS OF THE U. S. GEOLOGICAL SURVEY STREAMGAGING NETWORK.
Arthur G. Scott
1986, Conference Paper
This paper summarizes the results from the first 3 years of a 5-year cost-effectiveness study of the U. S. Geological Survey streamgaging network. The objective of the study is to define and document the most cost-effective means of furnishing streamflow information. In the first step of this study, data uses...
The South Fork detachment fault, Park County, Wyoming: discussion and reply ( USA).
W. G. Pierce
1986, Contributions to Geology - University of Wyoming, Laramie (24) 77-90
Blackstone (1985) published an interpretation of South form detachment fault and related features. His interpretation of the area between Castle and Hardpan transverse faults is identical to mine of 1941. Subsequent detailed mapping has shown that the structure between the transverse faults is more complicated than originally envisioned and resurrected...
Paleontology and deposition of the Phosphoria Formation.
B. R. Wardlaw, J.W. Collinson
1986, Contributions to Geology - University of Wyoming, Laramie (24) 107-142
The Phosphoria Formation and related rocks were deposited in an interior sag basin developed in the Cordilleran miogeocline of western North America. Deposition can be characterized as a fringing bank complex on a carbonate ramp. Conodont-brachiopod biostratigraphy provides a sufficient relative time framework for correlation of the many units. These...
Minasgeraisite, a new member of the gadolinite group from Minas Gerais, Brazil.
E.E. Foord, R. V. Gaines, J.G. Crock, W.B. Simmons Jr., C.P. Barbosa
1986, American Mineralogist (71) 603-607
Minasgeraisite, Y2CaBe2Si2O10, a 9.833(2), b 7.562(1), c 4.702(1) A, beta 90.46(6)o, P21/a, Z = 2, is a new member of the gadolinite group. Found in quantities of only several hundred mg in the Jaguaracu pegmatite, Minas Gerais, Brazil, it occurs as 0.2 to 1.0 mm-diameter rosettes, coating and intergrown with...
STRIKE SLIP ON REACTIVATED TRIASSIC(? ) BASIN BOUNDARY FAULT ZONES AS SOURCES OF EARTHQUAKES NEAR CHARLESTON, S. C.
John C. Behrendt, Annette Yuan
1986, Conference Paper
Interpretation of several thousand kilometers of multifold seismic reflection data supports the old theory that earthquakes in the Charleston, S. C. area are associated with reactivated Triassic(? ) basin boundary extensional fault zones. The Gants-Cooke fault zone associated with the Jedburg basin in the 1886 meizoseismal area, an unnamed fault...
FUNDAMENTAL MODAL BEHAVIOR OF AN EARTHQUAKE-EXCITED BRIDGE.
A. G. Brady, M. Çelebi
1986, Conference Paper
The magnitude 6. 1 Morgan Hill, California, earthquake of April 24, 1984, produced a set of acceleration records at the freeway overpass in San Jose carrying I-280/I-680 across U. S. 101, 12 km from the epicenter. Peak accelerations reached 0. 10 g at ground level and 0. 16 g in...
Post fledging behavior of ferruginous hawks in North Dakota
P.M. Konrad, D.S. Gilmer
1986, Journal of Raptor Research (20) 35-39
Post-fledging activities of 18 Ferruginous Hawks (Buteo regalis) were studied in southcentral North Dakota during July and August 1979. The post-fledging period ranged from 10 to 40 d (mean = 23.1 d; N = 16). Haylands and native prairie grasslands were the principal land use types utilized by fledglings and...
Oil-source correlation study in northeastern Alaska
D.E. Anders, Leslie B. Magoon
1986, Organic Geochemistry (10) 407-415
The occurrence of numerous oil-stained outcrops across the coastal plain of the Arctic National Wildlife Refuge (ANWR) in northeastern Alaska indicates that commercial hydrocarbons could be present in the subsurface of this region. In addition, this region is flanked by two important oil provinces—the Prudhoe Bay area to the west...
ESTIMATION OF URBAN STORM-RUNOFF LOADS.
Nancy E. Driver, David J. Lystrom
Urbonas BenRoesner Larry A., editor(s)
1986, Conference Paper
The United States was divided into three regions, on the basis of mean annual rainfall, to decrease the variability in storm-runoff constituent loads and to improve regression relations with basin and climatic characteristics. Multiple-regression analyses, in progress, are being refined to determine the best regression models for each of the...
What won't Turnstones eat?
Robert E. Gill Jr.
1986, British Birds (79) 402-403
The Turnstone Arenaria interpres probably has one of the most varied diets of any wader species. Besides the 'normal' foods taken (see, e.g., Prater 1972, Nettleship 1973, Jones 1975), a considerable variety of 'unusual' foods and feeding behaviours has also been reported. Items taken include soap, gull excrement, dog food,...
A sublittoral population of Pleurophycus gardneri Setchell and Saunders 1900 (Phaeophyceae: Laminariaceae) in central California
Glenn R. VanBlaricom, Daniel C. Reed, Christopher Harrold, James L. Bodkin
1986, Bulletin of the Southern California Academy of Sciences (85) 120-122
Published distributional records for the stipitate kelp Pleurophycus gardneri Setchell and Saunders 1900 (Phaeophyceae: Laminariaceae) indicae a geographic range from Montague Island (59°58’N, 147°22W), Alaska to Fort Bragg (39°27’N, 123°47’W), California (Druehl 1969, 1970; Kjeldsen 1972). P. gardneri is found primarily in rocky intertidal and shallow subtidal locations (Scagel 1967;...
Prototype operational earthquake prediction system
Henry Spall, editor(s)
1986, Earthquakes & Volcanoes (USGS) (18) 151-152
An objective if the U.S. Earthquake Hazards Reduction Act of 1977 is to introduce into all regions of the country that are subject to large and moderate earthquakes, systems for predicting earthquakes and assessing earthquake risk. In 1985, the USGS developed for the Secretary of the Interior a program for...
Ground-water movement in the upper glacial aquifer in the Manorville area, Town of Brookhaven, Long Island, New York, in November 1983
D. A. Eckhardt, E. J. Wexler
1986, Water-Resources Investigations Report 85-4035
Water levels in 52 wells near the Manorville scavenger-waste disposal facility in the Town of Brookhaven were measured in November 1983 to determine the direction and gradients of groundwater flow in the upper glacial aquifer. Groundwater moves south-southeastward (S22 degrees E) from the groundwater divide, about 6 miles north of...
