The laboratory albitization of mid-ocean ridge basalt
Robert J. Rosenbauer, James L. Bischoff, Robert A. Zierenberg
1988, Journal of Geology (96) 237-244
Complete alteration of fresh mid-ocean ridge basalt to albite + actinolite + smectite took place in the presence of quartz and 3.4m NaCl at 350°C and 400 bars. Significant Na-metasomatism occurred in exchange for Ca + Fe + Mn. In contrast, alteration of the basalt/quartz mixture with a synthetically prepared...
Variations in abundance of young-of-the-year channel catfish in a navigation pool of the upper Mississippi River
L. E. Holland Bartels, M.C. Duval
1988, Transactions of the American Fisheries Society (117) 202-208
Spatial and temporal variations in the abundance of young‐of‐the‐year channel catfish Ictalurus punctatus were determined over 3 years based on 154 trawls taken from Navigation Pool 7 of the upper Mississippi River. No significant spatial patterns in abundance or length offish in the catch were found in seven poolwide...
Use of electrothermal vaporization-multiple-wavelength absorption spectrometry to qualitatively screen for the presence of polycyclic aromatic hydrocarbons
Joseph M. Shekiro, Rodney K. Skogerboe, Howard E. Taylor
1988, Environmental Science & Technology (22) 338-344
No abstract available...
Cooperative federal-state liming research on surface waters impacted by acidic deposition
R.K. Schreiber
1988, Water, Air, & Soil Pollution (41) 53-73
In the eastern and north-central United States, lakes and streams with low acid neutralizing capacity are at risk from acidity. Resource management agencies are interested in developing mitigation strategies that protect or restore fisheries in these waters. Addition of limestone (calcium carbonate) to improve water quality...
Granulite fades Nd-isotopic homogenization in the Lewisian complex of northwest Scotland
M.J. Whitehouse
1988, Nature (331) 705-707
A published Sm–Nd whole-rock isochron of 2,920 ± 50 Myr, obtained from a wide range of lithologies in the Lewisian complex of north-west Scotland, was interpreted1 as the time of protolith formation. This date is ∼260 Myr older than estimates for the timing of high-grade metamorphism in the complex at ∼ 2,660...
Amino-acid diagenesis and its implication for late Pleistocene lacustrine sediment, Clear Lake, California
D.J. Blunt, Keith A. Kvenvolden
1988, GSA Special Papers (214) 161-170
The diagenesis of amino acids in sediments from Clear Lake core CL-80-1 is indicated by changes in amino acid concentrations, compositions, and stereochemistry. Concentrations of total amino acids decrease with depth, but the decrease is not systematic, possibly reflecting a nonuniformity in sedimentary and postdepositional processes affecting the amino acids....
Methane hydrates and global climate
Keith A. Kvenvolden
1988, Global Biogeochemical Cycles (2) 221-229
Methane hydrates are globally widespread in permafrost regions and beneath the sea in sediment of outer continental margins. The amount of methane sequestered in gas hydrates is probably enormous, but estimates of the amounts are speculative and range over three orders of magnitude (about 103 to 106 GT (gigatons = 1015 g)). A...
Minnesota District Water Resources Division: Information and technical assistance
W.J. Herb
1988, Conference Paper, Agrichemicals and Ground Water Protection--Resources and Strategies for State and Local Management, Proceedings
No abstract available....
Aliphatic hydrocarbons in sediments from Prydz Bay, Antarctica
Keith A. Kvenvolden, Frances D. Hostettler, J. B. Rapp, Tamara Frank
1988, Proceedings of the Ocean Drilling Program: Scientific Results (119) 417-424
High molecular weight aliphatic hydrocarbons were extracted from sediments at two sites (741 and 742) drilled during ODP Leg 119 in Prydz Bay. The distributions of n-alkanes and triterpenoid and steroid hydrocarbons suggest that the n- alkanes and steranes are mainly of terrestrial origin and that the hydrocarbons are immature...
Hawaii Volcano Observatory 75th anniversary
Thomas L. Wright, Robert W. Decker
1988, Earthquakes & Volcanoes (USGS) (20) 31-35
The 75th anniversary of the founding of the U.S. Geological Survey (USGS) Hawaiian Volcano Observatory (HVO) was celebrated in 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...
Seismic design and engineering research at the U.S. Geological Survey
1988, Earthquakes & Volcanoes (USGS) (20) 219-223
The Engineering Seismology Element of the USGS Earthquake Hazards Reduction Program is responsible for the coordination and operation of the National Strong Motion Network to collect, process, and disseminate earthquake strong-motion data; and, the development of improved methodologies to estimate and predict earthquake ground motion. Instrumental observations of strong ground...
NCIC state affiliates
Water Resources Division, U.S. Geological Survey
1988, Report
In 1974, the U.S. Geological Survey, Department of the Interior, established the National Cartographic Information Center (NCIC) to serve as the public's primary source for information concerning the availability of cartographic, geographic,and remotely sensed data. As part of its program of providing information to the public, NCIC began in 1976...
Hotshots, hotspots, and female preference in the organization of lek mating systems
B. M. Beehler, Mercedes S. Foster
1988, American Naturalist (131) 203-219
We critically review the female-preference and hotspot models, the two most widely accepted recent explanations of lek organization. On the basis of what we believe are the inadequacies of these models-too great a reliance on the presumed acuity of female discrimination, the assumption that females have full freedom of choice...
A high incidence of brown-headed cowbird parasitism of willow flycatchers
James A. Sedgwick, Fritz L. Knopf
1988, The Condor (90) 253-256
Brown-headed Cowbirds (Molothrus ater) parasitize both Willow (Empidonax traillii) and Alder (E. alnorum) flycatchers (Friedmann et al. 1977, Friedmann and Kiff 1985). These two flycatchers were considered a single species until 1973 (AOU 1973), which has masked information about the frequency with which each is parasitized. Whereas several...
Discussion of "Wind function for a sheltered stream"
R.E. Rathburn
1988, Journal of Environmental Engineering (114) 229-231
No abstract available....
The Fox permafrost tunnel: A late Quaternary geologic record in central Alaska
T. D. Hamilton, J. Craig, P.V. Spellmann
1988, GSA Bulletin (100) 948-969
The Fox permafrost tunnel, which penetrates 110 m into frozen sediments of Gold-stream valley, provides a continuous exposure of fossiliferous silt and alluvium above schistose bedrock. Deposition of fluvial gravel was followed by a long interval of loess accretion and permafrost aggradation that was punctuated by episodes of thaw and...
Stratigraphic evidence of Holocene faulting in the mid-continent: The Meers fault, southwestern Oklahoma
Richard F. Madole
1988, GSA Bulletin (100) 392-401
Stratigraphic relations and ten 14C ages show that movement occurred on the Meers fault in late Holocene time. Movement on the fault postdates the Browns Creek Alluvium, which began to be deposited between 14,000 and 13,000 yr B.P., and predates the East Cache Alluvium, which was deposited between 800 and 100...
Voluminous submarine lava flows from Hawaiian volcanoes
Robin T. Holcomb, James G. Moore, Peter W. Lipman, R.H. Belderson
1988, Geology (16) 400-404
The GLORIA long-range sonar imaging system has revealed fields of large lava flows in the Hawaiian Trough east and south of Hawaii in water as deep as 5.5 km. Flows in the most extensive field (110 km long) have erupted from the deep submarine segment of Kilauea's east rift zone....
Large-scale bedforms in boulder gravel produced by giant waves in Hawaii
G. W. Moore, James G. Moore
1988, GSA Special Papers (229) 101-110
Approximately 105,000 yr ago (based on uranium-series dating), waves in a giant wave train swept up to an elevation of about 375 m on the island of Lanai. The waves deposited the Hulopoe Gravel, which near the present shoreline consists of basalt boulders, coral fragments, and calcareous beachrock slabs, and...
Deformation along the northeast side of Blacktail Mountains salient, southwestern Montana
Russell G. Tysdal
1988, GSA Memoirs (171) 203-215
The Blacktail Mountains salient is a convex-eastward area of stacked Laramide-age thrust faults that trend north and dip west at moderate angles. The thrusts occur in Mississippian to Cretaceous strata above a basement of Archean metamorphic rocks. The northern margin of the salient is delimited by the Jake Canyon fault,...
Friction of ice
M. L. Beeman, W.B. Durham, Stephen H. Kirby
1988, Journal of Geophysical Research B: Solid Earth (93) 7625-7633
The frictional strength of ice seems to be well below that for all other rocks. Triaxial testing of cylinders of pure water ice containing a 45° inclined sawcut, at temperatures of 77 ≤ T ≤ 115 K and confining pressures 0.1 ≤ P ≤ 250 MPa, reveals the frictional laws τ = 0.20 σn +...
A paleomagnetic investigation of rocks from the Ohio Range and the Dry Valleys, Transantarctic Mountains, Antarctica
Karl S. Kellogg
1988, New Zealand Journal of Geology and Geophysics (31) 77-85
Two well-defined virtual geomagnetic poles (VGPs) for East Antarctica were obtained from the Middle Jurassic Ferrar Dolerite, sampled from a thick sill on Mt Schopf in the Ohio Range, and from a horizontal sheet intruding Paleozoic granitic rocks at Mt Cerberus in the Dry Valleys. The VGP from the sill...
Sediment deposition in the Late Holocene abyssal Black Sea with climatic and chronological implications
B.J. Hay, M.A. Arthur, Walter E. Dean, E.D. Neff, S. Honjo
1988, Deep Sea Research Part A, Oceanographic Research Papers (38) 1211-1235
The temporal sedimentary patterns in the Late Holocene central eastern and western Black Sea are very similar. The sedimentary history was most visibly affected by the coccolithophorid species Emiliania huxleyi which briefly invaded the Black Sea for the first time (“First Invasion Period”), nearly disappeared again shortly afterwards (“Transition Sapropel”), but returned...
Pyrite formation in the Lower Cretaceous Mowry Shale: Effect of organic matter type and reactive iron content
Hugh R. Davis, Charles W. Byers, Walter E. Dean
1988, American Journal of Science (288) 873-890
Geochemical analysis of the Lower Cretaceous Mowry Shale in Wyoming and Montana shows that organic matter type and reactive iron content limited pyrite formation during early diagenesis. Consequently, direct interpretation of paleosalinity cannot be made from a carbon/sulfur plot. Mowry Shale samples with hydrogen index (HI) less than 150 (mg...
Direct-current resistivity data from 94 sites in northeastern Palm Beach County, Florida
Cathleen J. Peterson
1988, Open-File Report 88-464
Direct-current resistivity data were collected from 94 vertical electric sounding profiles in northeastern Palm Beach County, Florida. Direct-current resistivity data, which may be used to determine the location and thicknesses of shallow, semipermeable marls or locate zones of high chloride concentration, are presented in this report. The resistivity data consist...
