Water Resources Division, U.S. Geological Survey
1981, Report
No abstract available....
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Not all publications have extents, not all extents are completely accurateWater Resources Division, U.S. Geological Survey
1981, Report
No abstract available....
P.A. Gilderhus, R.M. Burress, C.R. Walker
1981, Special Technical Report 752
H.M. Kelsey, Mary Ann Madej, J. Pitlick, M. Coghlan, D. Best, R. Belding, P. Stroud
1981, Technical Report 3
No abstract available at this time...
Harold F. Duebbert, Erling T. Jacobson, Kenneth F. Higgins, Erling B. Podoll
1981, Special Scientific Report - Wildlife 234
Techniques are described for establishment of seeded grasslands on cultivated soils to provide wildlife habitat within the glaciated prairie pothole region in the north-central United States. Management of grassland habitats on a sound ecological basis is an important wildlife management activity in the region. The primary purpose of the guidelines...
Douglas H. Johnson
1981, General Technical Report RM-87
D. T. Matlock
1981, Open-File Report 82-77
Simulative ground-water flow models for Vekol Valley, the Waterman Wash area, and the Bosque area were developed for use in evaluating alternatives for developing a ground-water supply for the Ak-Chin Indian Community. The hydraulic properties of the basin-fill deposits used in the models were estimated primarily from aquifer tests made...
K. Wolf
1981, Fish and Wildlife News (April-May) 45-47
C. M. Sakamoto-Arnold
1981, Journal of Geology (89) 129-137
High wind velocities during a windstorm in December of 1977 in the southern San Joaquin Valley, California, created eolian features and effects of a magnitude not previously reported in the literature. Three principal mechanisms of sediment movement by wind were studied by examining the size distribution of deposits in telephone...
K. L. Varnes, R. H. McMullin
1981, Open-File Report 81-84-A
No abstract available....
T.G. Lovering
1981, Journal of Geochemical Exploration (14) 69-81
Fragments of silicified rocks that are associated with deposits of base and precious metals may be transported as cobbles and pebbles in alluvium far downstream from the source outcrop. These rocks commonly exhibit certain characteristics which distinguish them from other detrital siliceous material, and may thus serve as a useful...
K.E. Green, R. P. Von Herzen, D.L. Williams
1981, Journal of Geophysical Research Solid Earth (86) 979-986
We report here measurements of the heat flow field of the Galapagos Spreading Center on crust of age less than 1.0 m.y. The 443 measurements in an area of about 570 km2 reveal the general planform of the geothermal flux and permit the first truly areal estimate of the near-axis conductive...
J.C. Savage, M. Lisowski, W.H. Prescott
1981, Journal of Geophysical Research Solid Earth (86) 1005-1014
Deformation along the Denali fault in the Delta River canyon was determined from geodetic surveys in 1941/1942, 1970, 1975, and 1979. The data were best for the 1975–1979 interval; in that period the average strain accumulation was essentially pure right lateral shear at a rate of 0.6 ± 0.1 μrad/a...
Baerbel K. Lucchitta, J.L. Klockenbrink
1981, The Moon and the Planets (24) 415-429
The morphology and distribution of ridges and scarps on Mars in the ± 30° latitude belt were investigated. Two distinct types of ridges were recognized. The first is long and linear, resembling mare ridges on the Moon; it occurs mostly in plains areas. The other is composed of short, anastomosing...
J.S. Leventhal
1981, Geochimica et Cosmochimica Acta (45) 883-889
Gas Chromatographic analysis of volatile products formed by stepwise pyrolysis of black shales can be used to characterize the kerogen by relating it to separated, identified precursors such as land-derived vitrinite and marine-source Tasmanites. Analysis of a Tasmanites sample shows exclusively n-alkane">n-alkane and -alkene pyrolysis products, whereas a vitrinite...
C.H. Ault, D.D. Carr
1981, Geological Society of America Bulletin (92) 641-647
During Silurian time, the Indiana part of the Wabash Platform was a shallow-water area between the proto-lllinois and pro-to-Michigan Basins and a site of growth of hundreds, or perhaps thousands, of reefs. Today, most reefs of northern Indiana are dolomite, but some are...
A.H. Truesdell, M. Nathenson, G.A. Frye
1981, Geothermics (10) 103-114
Wellbore and reservoir processes in a steam well in the Castle Rock field of The Geysers have been studied by means of down-hole pressure and temperature measurements and analyses of ejected water and steam produced under bleed and full flow. Down-hole measurements show that below a vapor zone there is...
Leslie B. Magoon, George E. Claypool
1981, American Association of Petroleum Geologists Bulletin (65) 1043-1061
Oil exploration commenced onshore adjacent to lower Cook Inlet on the Iniskin Peninsula in 1900, shifted with considerable success to upper Cook Inlet from 1957 through 1965, then returned to lower Cook Inlet in 1977 with the COST well and Federal OCS sale. Lower Cook Inlet COST No. 1 well,...
W.H. Prescott, A. Nur
1981, Journal of Geophysical Research Solid Earth (86) 999-1004
Plate motion below the seismogenic layer along the San Andreas fault system in California is generally assumed to occur by aseismic slip along a deeper extension of the fault. It is also possible that below the seismogenic layer, deformation is distributed laterally over a zone. Several observed features of the...
C. E. Neuzil, C. Cooley, Stephen E. Silliman, J.D. Bredehoeft, P. A. Hsieh
1981, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts (18) 253-258
In Part I a general analytical solution for the transient pulse test was presented. Part II presents a graphical method for analyzing data from a test to obtain the hydraulic properties of the sample. The general solution depends on both hydraulic conductivity and specific storage and, in theory, analysis of...
P.C. Lyons, H.B. Chase Jr.
1981, International Journal of Coal Geology (1) 155-168
Coal of the Narragansett basin generally has been considered to be anthracite and/or meta-anthracite. However, no single reliable method has been used to distinguish these two ranks in this basin. Three methods — chemical, X-ray, and petrographic — have been used...
H. H. Mills
1981, Journal of Geology (89) 649-660
Observations on mountains composed chiefly of shale and capped with Tuscarora Sandstone in the Valley and Ridge province of southwest Virginia suggest that slopes retreat by a process similar to but different from Bryan's (1940) "gully gravure." The process appears to operate as follows: Bouldery alluvium protects the floors of...
D. E. Lee, R. W. Kistler, I. Friedman, R. E. Van Loenen
1981, Journal of Geophysical Research Solid Earth (86) 10607-10616
The field settings are described and analytical data are presented for six two-mica granites from north-eastern Nevada. High δ18O and 87Sr/86Sr values indicate that all are S-type granites, derived from continental crust. The major element chemistry and accessory mineral contents of these rocks also are characteristic of S-type granites. Chemical, X...
T. M. Cronin
1981, Micropaleontology (27) 384-418
Using modern zoogeographic data and inferred temperature ranges for Champlain Sea ostracode species, bottom water paleotemperatures were estimated for three phases of deposition of this inland sea. The temporal distribution of these and other environmentally diagnostic species in Champlain Sea deposits reveals a significant local climatic change in the Champlain...
R.P. Denlinger, W.F. Isherwood, R. L. Kovach
1981, Journal of Geophysical Research Solid Earth (86) 6091-6096
Reservoir depletion at the Geysers from 1974 to 1977 is evident in measured changes in gravity, surface strain, and pore pressure drainage. The drainage area increased about 20%, the maximum gravity decrease was about −120 μGal, and the maximum elevation change was about 6 cm during this period. Since the...