Characteristics of hydrolysis of the complex Na2SnF6 in hydrothermal solutions-An experimental study
Y. Wang, C. I-Ming
1987, Chinese Journal of Geochemistry (6) 372-382
Characteristics of hydrolysis of the complex Na2SnF6, which is used as the starting material, in hydrothermal solutions have been studied at 200-602??C and 1 kbar. Experimental results show that intense hydrolysis of Na2SnF6 occurs at high temperatures and that with the rise of temperature the hydrolysis will become more intense....
Sources and flux of natural gases from Mono Lake, California
Ronald S. Oremland, L.G. Miller, Michael J. Whiticar
1987, Geochimica et Cosmochimica Acta (51) 2915-2929
The ability to identify a formation mechanism for natural gas in a particular environment requires consideration of several geochemical factors when there are multiple sources present. Four primary sources of methane have been identified in Mono Lake. Two of these sources were associated with numerous natural gas seeps which...
Origin of lead from green glass of Apollo 15426: A search for primitive lunar lead.
M. Tatsumoto, W. R. Premo, D.M. Unruh
1987, Journal of Geophysical Research Solid Earth (92) 361-371
A major obstacle in lunar U-Pb chronology is the elusiveness of the primary Pb isotopic composition and U/Pb ratio and therefore the Pb evolution for the early history of the moon. In an attempt to seek the primitive lunar Pb isotopic composition, green glass from lunar clod 15426,49 was studied...
Chemistry and mineralogy of pyrite-enriched sediments at a passive margin sulfide brine seep: Abyssal Gulf of Mexico
R.F. Commeau, C. K. Paull, J.A. Commeau, L.J. Poppe
1987, Earth and Planetary Science Letters (82) 62-74
Pyrite is rapidly accumulating at the contact between the Cretaceous limestones of the Florida Platform and the hemipelagic sediments of the abyssal Gulf of Mexico. Sediments sampled with the submersible “Alvin” in 3266 m of water are associated with a dense...
Preliminary geologic map of the Butte 1 degree by 2 degrees quadrangle, western Montana
C. A. Wallace, R. G. Schmidt, D. J. Lidke, M. R. Waters, J. E. Elliott, A. B. French, J. W. Whipple, S. E. Zarske, M. J. Blaskowski, B. A. Heise, R. A. Yeoman, J.M. O’Neill, D. A. Lopez, G. D. Robinson, M. R. Klepper
1987, Open-File Report 86-292
No abstract available....
Evolution of fluvial styles in the Eocene Wasatch Formation, Powder River Basin, Wyoming
Peter D. Warwick, Romeo M. Flores
Frank G. Ethridge, Romeo M. Flores, editor(s)
1987, Book chapter, Recent developments in fluvial sedimentology
Vertical and lateral facies changes in the lower part of the Eocene Wasatch Formation in the Powder River Basin, Wyoming represent an evolution of fluvial systems that varied from meandering to anastomosing. The meandering facies in the lower part of the study interval formed in a series of broad meanderbelts...
Ground-water resources of the Laura area, Majuro Atoll, Marshall Islands
S. N. Hamlin, S. S. Anthony
1987, Water-Resources Investigations Report 87-4047
The water system that supplies the heavily populated Dalap-Uliga-Darrit (DUD) area of Majuro atoll, Marshall Island, relies almost entirely upon airstrip catchment of rain water. Droughts cause severe water supply problems and water rationing is required, even during periods of normal rainfall. The Laura area contains a substantial lens of...
Gulf trough: The Atlantic connection
Peter Popenoe, Vernon J. Henry, Faisal M. Idris
1987, Geology (15) 327-332
Analyses of seismic reflection profiles and stratigraphic data indicate a continuation of the Gulf trough trend across eastern South Carolina and offshore between Cape Fear and Cape Hatteras, North Carolina. Seismic profiles show a linear northeast-trending zone of nondeposition and erosion and areas...
Sulfur and lead isotope studies of stratiform Zn-Pb-Ag deposits, Anvil Range, Yukon: Basinal brine exhalation and anoxic bottom-water mixing (Canada)
Wayne C. Shanks III, L. G. Woodruff, G.A. Jilson, D.S. Jennings, J.S. Modene, B.D. Ryan
1987, Economic Geology (82) 600-634
Five stratiform Zn-Pb-Ag deposits are known in Early Cambrian metapelitic rocks along a curvilinear trend in the Anvil Range, central Yukon. The Anvil Range deposits occur along the southwestern boundary of the Selwyn basin in the stratigraphic transition zone between metapelites of the Mt. Mye unit and calcareous phyllites of...
Re-registration of rotenone: A state/federal cooperative effort
R.J. Sousa, F. P. Meyer, R. A. Schnick
1987, Fisheries (12) 9-13
Rotenone is an effective fish toxicant used by virtually all states to manage fish populations. In response to an allegation that rotenone might cause mammary tumors, the U.S. Environmental Protection Agency, in 1976, announced that it was considering listing rotenone as an unsafe substance. To determine if these allegations were...
Organochlorine contaminants and reproductive success of black skimmers in south Texas, 1984
Thomas W. Custer, Christine A. Mitchell
1987, Journal of Field Ornithology (58) 480-489
Ninety-four Black Skimmer (Rhynchops niger) nests on a dredged-material island colony near Laguna Vista, Texas, were fenced and monitored in 1984 from early incubation until 21 d after the last egg hatched. The daily probability of success was greater during the nestling (99.7%/d/nest) period than during the incubation (98.5%) or...
Origin of the lethal gas burst from Lake Monoun, Cameroun
Haraldur Sigurdsson, J.D. Devine, F.M. Tchua, F.M. Presser, M.K.W. Pringle, William C. Evans
1987, Journal of Volcanology and Geothermal Research (31) 1-16
On 15 August, 1984, a lethal gas burst issued from a submerged 96-m-deep crater in Lake Monoun in Cameroun, western Africa, killing 37 people. The event was associated with a landslide from the eastern crater rim, which slumped into deep water. Waters below 50 m are anoxic, dominated by high...
Partitioning potential fish yields from the Great Lakes
D.H. Loftus, C.H. Olver, Edward H. Brown, P.J. Colby, Wilbur L. Hartman, D.H. Schupp
1987, Canadian Journal of Fisheries and Aquatic Sciences (44) 417-424
We proposed and implemented procedures for partitioning future fish yields from the Great Lakes into taxonomic components. These projections are intended as guidelines for Great Lakes resource managers and scientists. Attainment of projected yields depends on restoration of stable fish communities containing some large piscivores that will use prey efficiently,...
Paint chip poisoning of Laysan albatross at Midway Atoll
L. Sileo, S.I. Fefer
1987, Journal of Wildlife Diseases (23) 432-437
Epizootic mortality occurred in Laysan albatross (Diomedea immutabilis) fledgings at Midway Atoll in 1983. Heavy metal toxicity from ingestion of weathered paint chips was one of the causes. Sick albatrosses were unable to retract their wings, causing a 'droop-wing' appearance. Five normal and 12 droop-winged fledglings were captured, killed, and...
Nongame bird communities on managed grasslands in North Dakota
Rochelle B. Renken, James J. Dinsmore
1987, Canadian Field-Naturalist (101) 551-557
Grazed native prairie, unmanipulated native prairie, and planted alfalfa-wheatgrass habitats each supported prairie bird species unique to that habitat type. Comparisons of the three habitats, using community coefficients and overlap indices, showed that grazed and alfalfa-wheatgrass habitats supported the most dissimilar or unique bird communities. All three habitat types, or...
Tectonic morphology of offshore Eel River basin, California
M.E. Field, J.V. Gardner, D.E. Drake, D.A. Caccione
1987, Conference Paper, Tectonics, sedimentation and evo lution of the Eel River and associated coastal basins of Northern California
No abstract available ...
Sericite from the Silverton caldera, Colorado: correlation among structure, composition, origin, and particle thickness.
D. D. Eberl, J. Srodon, M. Lee, P.H. Nadeau, H. R. Northrop
1987, American Mineralogist (72) 914-934
The mineralogy and the origin of a suite of almost pure sericites, collected from fractures in hydrothermally altered volcanic rocks in the vicinity of the Silverton caldera in the western San Juan Mountains of Colorado, USA, are analysed.-J.A.Z....
Ground-water levels in the lower Paleozoic and Precambrian crystalline rocks, southeastern Chester County, Pennsylvania, July and August 1986
John A. Garges
1987, Water-Resources Investigations Report 86-4352
A water table contour map of the lower Paleozoic and Precambrian crystalline rocks of southeastern Chester County, Pennsylvania was constructed on the basis of water levels measured in 261 wells in July and August 1986, elevations of 11 springs that were flowing in July and August 1986, and water levels...
Sedimentation across the central California oxygen minimum zone: an alternative coastal upwelling sequence
T. L. Vercoutere, H.T. Mullins, K. McDougall, J.B. Thompson
1987, Journal of Sedimentary Petrology (57) 709-722
Distribution, abundance, and diversity of terrigenous, authigenous, and biogenous material provide evidence of the effect of bottom currents and oxygen minimum zone (OMZ) on continental slope sedimentation offshore central California. Box core samples and bottom photographs collected across the oxygen minimum zone of...
Chemical structural studies of natural lignin by dipolar dephasing solid-state 13C nuclear magnetic resonance
Patrick G. Hatcher
1987, Organic Geochemistry (11) 31-39
Two natural lignins, one from a gymnosperm wood the other from angiosperm wood, were examined by conventional solid-state and dipolar dephasing 13C nuclear magnetic resonance (NMR) techniques. The results obtained from both techniques show that the structure of natural lignins is consistent with models of softwood and hardwood lignin. The dipolar...
Assessing the bioaccumulation of contaminants from sediments by fish and other aquatic organisms
Wayne A. Willford, Michael J. Mac, Robert J. Hesselberg
1987, Hydrobiologia (149) 107-111
Contaminated sediments that are not acutely toxic to aquatic organisms but contain bioaccumulable toxic substances present a common, yet poorly understood problem for regulatory decision makers. In order to recommend options to minimize bioaccumulation of these toxic substances, decisionmakers need estimates of 1. which substances are available for accumulation by...
Geologic map of the Handies Peak quadrangle, San Juan, Hinsdale and Ouray Counties, Colorado
Robert G. Luedke, Wilbur S. Burbank
1987, Geologic Quadrangle 1595
No abstract available....
One hundred years of earthquake recording at the University of California
B. A. Bolt
1987, Earthquakes & Volcanoes (USGS) (19) 88-92
Seismology is a relatively new science, so there is special reason to celebrate the first permanent earthquake observatories in America, set up by the University of California 100 years ago. The best seismographs then available arrived from England in 1887 and were installed at Lick Observatory on Mt.Hamilton and at the...
Geologic map of the Maasaw Patera area of Io
Henry J. Moore
1987, IMAP 1851
No abstract available....
Hydrogeochemistry of the upper part of the Fort Union group in the Gascoyne lignite strip-mining area, North Dakota
R. L. Houghton, Donald C. Thorstenson, Donald W. Fisher, G.H. Groenewold
1987, Professional Paper 1340
NoticeThe publication has been withdrawn because it contained errors or contained information that could not be verified for accuracy....
