U-Th-Pb systematics of some granitoids from the northeastern Yilgarn Block, Western Australia and implications for uranium source rock potential
J. S. Stuckless, J.A. Bunting, Ignatius T. Nkomo
1981, Journal of the Geological Society of Australia (28) 365-375
The Mount Boreas‐type granite and spatially associated syenitic granitoid of Western Australia yield Pb‐Pb ages of 2370 ± 100 Ma and 2760 ± 210 Ma, respectively. Th‐Pb ages, although less precise, are concordant with these ages, and therefore the apparent ages are interpreted to be the crystallisation ages for these two units....
The Lake Bosumtwi impact crater, Ghana
William B. Jones, Michael Bacon, David A. Hastings
1981, Geological Society of America Bulletin (96) 342-349
The 1-m.y.-old Bosumtwi Crater, Ghana, has a nearly circular shape with a rim diameter of 11 km north-south and 10 km east-west. It is surrounded by a circular depression and an outer ridge of diameter 20 km. Polymict breccias averaging at least 20 m thick with clasts as much as...
Map projections for satellite tracking.
J.P. Snyder
1981, Photogrammetric Engineering and Remote Sensing (47) 205-213
New map projections to be used for plotting successive satellite groundtracks show these tracks as straight lines. The map may be made conformal along any 2 parallels of latitude between the limits of latitude reached by the groundtrack, or the 'tracking limits'. If these parallels are equidistant from the Equator,...
Magnetic effects of maghemitization of oceanic crust
M. Prevot, A. Lecaille, Edward A. Mankinen
1981, Journal of Geophysical Research B: Solid Earth (86) 4009-4020
Both theoretical considerations and available experimental results indicate that magnetic effects of maghemitization are strongly dependent on the grain size of the originally unoxidized titanomagnetite. Maghemitization of single‐domain titanomagnetite results in a decrease in coercivity, an increase in susceptibility, and a large decrease in Q ratio. Maghemitization of multidomain titanomagnetite results in...
A comparison of populations of desert tortoises, Gopherus agassizii in grazed and ungrazed areas in Ivanpah Valley, California
P.A. Medica, C.L. Lyons, F.B. Turner
1981, Report
No abstract available at this time...
Environmental and genetic contributions to morphological differentiation in ciscoes (Coregoninae) of the Great Lakes
Thomas N. Todd, Gerald R. Smith, Louella E. Cable
1981, Canadian Journal of Fisheries and Aquatic Sciences (38) 59-67
Laboratory-produced progeny of Coregonus alpenae, C. zenithicus, C. hoyi, and C. kiyi and their wild parents were used to examine the contributions of genotype and environment to morphology. Morphological differences between parents and offspring were generally greater than those between species, indicating strong environmental effects. The phenotypic effects on most characters can probably be attributed to different developmental...
Geotechnical laboratory test results on piston core samples taken from the mid-Atlantic upper continental slope by the U.S. Geological Survey during September 1979
Harold W. Olsen, James S. Booth, James E. Robb, William S. Gardner, Ram D. Singh, Paul G. Swanson, Paul W. Mayne, R. Gregory Hamadock
1981, Open-File Report 81-366
No abstract available....
Erosion control techniques used in Redwood National Park, northern California, 1978-1979
W. Weaver, Mary Ann Madej
1981, Publication 132
No abstract available at this time...
The status and distribution of ants in the Crater District of Haleakala National Park
Joan H. Fellers, Gary M. Fellers
1981, Technical Report CPSU/UH 40
The Crater District of Haleakala National Park was surveyed for ants. Three species were found. Argentine ants (Iridomyrmex humilis) occurred only within I km of the park headquarters and the nearby research facility. Hypoponera opaciceps was found in small numbers throughout the Crater District. Cardiocondyla emeryi was present only at...
Bighorn habitat evaluation and management guidelines for the Grapevine Mountains, Death Valley National Monument
C. L. Douglas, K.J. Kingsley
1981, Technical Report CPSU/UNLV 023/01
No abstract available at this time...
Growth and mortality of fry of Lake Michigan lake trout during chronic exposure to PCB's and DDE
William H. Berlin, Robert J. Hesselberg, Michael J. Mac
1981, Technical Paper 105
Fry hatched from eggs of Lake Michigan lake trout (Salvelinus namaycush) were exposed (beginning about 1 week after hatching) to contaminant concentrations of PCB's and DDE similar to those in water and plankton in southeastern Lake Michigan (1X level), and to concentrations about 5 (5X) and 25 (25X) times greater....
Earthquakes, July-August, 1980
W. J. Person
1981, Earthquake Information Bulletin (USGS) (13) 69-72
Estimating the area of vegetation types with Landsat and ancillary data
David S. Linden, Wayne G. Rohde, K. G. Bonner
1981, Conference Paper, Arid land resource inventories: Developing cost-efficient methods: An international workshop, November 30–December 6, 1980, La Paz, Mexico
No abstract available....
Efficient arid land monitoring using Landsat images
Charles J. Robinove
1981, Conference Paper, Arid land resource inventories: Developing cost-efficient methods
No abstract available....
Measurements of shock-induced luminescence at Meteor Crater, Arizona, from laboratory and airborne Fraunhofer line-discriminator systems
David J. Roddy, Robert D. Watson, Arnold F. Theisen
William R. Hemphill, Mark Settle, editor(s)
1981, Conference Paper, Workshop on applications of luminescence techniques to Earth resource studies
No abstract available....
Airborne Fraunhofer line discriminator surveys in southern California, Nevada and central New Mexico
Robert D. Watson
William R. Hemphill, Mark Settle, editor(s)
1981, Conference Paper, Workshop on applications of luminescence techniques to Earth resource studies
No abstract available....
Federal and Indian lands coal, phosphate, potash, sodium, and other mineral production, royalty income, and related statistics; 1920 through calendar year 1980
U.S. Geological Survey
1981, Report
No abstract available....
U.S. strong-motion programs
Roger D. Borcherdt, R. B. Matthiesen
1980, Conference Paper, Proceedings of the seventh world conference on earthquake engineering. Istanbul, Turkey, Sept. 8-13, 1980
No abstract available....
Water resources data for Maryland and Delaware, water year 1979
Water Resources Division, U.S. Geological Survey
1980, Water Data Report MD-DE-79-1
No abstract available....
Cognitive model for recreational spatial behavior in an urban area
Robert E. Lloyd, Robert Ader
1980, Southeastern Geographer (20) 145-159
No abstract available...
Developing a state water plan: Ground-water conditions in Utah, spring of 1980
L. R. Herbert, R. B. Garrett, E.C. Gerhart, Judy I. Steiger, Cynthia L. Appel, V.L. Jensen, Michael Enright, S.K. Dubois, D. C. Emett, A.I. Guhman, L.J. Neff, L.G. Sultz, G. W. Sandberg
1980, Cooperative Investigations Report 19
This is the seventeenth in a series of annual reports that describe ground-water conditions in Utah. Reports in this series, prepared cooperatively by the U.S. Geological Survey and the Utah Division of Water Resources, provide data to enable interested parties to keep abreast of changing ground-water conditions.This report, like the...
Utah water use data: Public water supplies, 1960-1978
David Mills, Ronald Jibson, James Riley, David Hooper, Richard Schwarting
1980, Utah Division of Water Rights Water-Use Report 1
This report was prepared as a part of the Statewide cooperative water-resources investigation program administered jointly by the Utah Department of Natural Resources, Division of Water Rights and the United States Geological Survey. The program is conducted to meet the water administration and water-resources data needs of the State, as...
Bibliography of U.S. Geological Survey water-resources reports for Utah
1980, Utah Division of Water Rights Information Bulletin 27
This bibliography contains a complete listing to June 30, 1980, of reports relating to the water resources of Utah prepared by personnel of the U.S. Geological Survey. Discussions of the related subjects of geology, hydrology, and chemical quality of the water are included in many of the reports. The reports...
What to do when a volcano erupts
1980, Earthquake Information Bulletin (USGS) (12) 161-161
News from the observatories
1980, Earthquake Information Bulletin (USGS) (12) 78-79
