Calibration of water-velocity meters
William R. Kaehrle, James E. Bowie
1988, Conference Paper
The U.S. Geological Survey, Department of the Interior, as part of its responsibility to appraise the quantity of water resources in the United States, maintains facilities for the calibration of water-velocity meters at the Gulf Coast Hydroscience Center's Hydraulic Laboratory Facility, NSTL, Mississippi. These meters are used in hydrologic studies...
On seismically induced pore pressure and settlement
Albert T.F. Chen
1988, Conference Paper, Geotechnical Special Publication
Two different approaches are used to estimate pore pressures and settlement in a 50-ft (15.2-m) sand deposit subjected to a variety of earthquake loadings. Although the two approaches seem consistent in predicting the occurrence of liquefaction, the results show that they are quite divergent in estimating pore-pressure build-ups and magnitude...
Sr and Nd isotopic variations in ferromanganese crusts from the Central Pacific: Implications for age and source provenance
K. Futa, Z. E. Peterman, J.R. Hein
1988, Geochimica et Cosmochimica Acta (52) 2229-2233
Isotopic analyses of two hydrogenetic ferromanganese (Fe-Mn) crusts from volcanic edifices in the central Pacific Ocean reveal systematic variations in 87Sr86Sr">87Sr86Sr and 143Nd144Nd">143Nd144Nd, with both ratios decreasing as a function of depth into the Fe-Mn crusts. Leaching experiments suggest that Sr...
ALH85085: A unique volatile-poor carbonaceous chondrite with possible implications for nebular fractionation processes
J. N. Grossman, A.E. Rubin, G.J. MacPherson
1988, Earth and Planetary Science Letters (91) 33-54
Allan Hills 85085 is a unique chondrite with affinities to the Al Rais-Renazzo clan of carbonaceous chondrites. Its constituents are less than 50 μm in mean size. Chondrules and microchondrules of all textures are present; nonporphyritic chondrules are unusually abundant. The mean compositions of porphyritic, nonporphyritic and barred olivine chondrules...
Some revisions to the stratigraphy and structure of the Connecticut Valley trough, eastern Vermont
Norman L. Hatch Jr.
1988, American Journal of Science (288) 1041-1059
No abstract available....
MAGMIX: a basic program to calculate viscosities of interacting magmas of differing composition, temperature, and water content
T. P. Frost, J.R. Lindsay
1988, Computers & Geosciences (14) 213-228
MAGMIX is a BASIC program designed to predict viscosities at thermal equilibrium of interacting magmas of differing compositions, initial temperatures, crystallinities, crystal sizes, and water content for any mixing proportion between end members. From the viscosities of the end members at thermal equilibrium, it is possible to predict the styles...
Geologic evidence for a magma chamber beneath Newberry Volcano, Oregon
N. S. MacLeod, D. R. Sherrod
1988, Journal of Geophysical Research Solid Earth (93) 10067-10079
At Newberry Volcano, central Oregon, more than 0.5 m.y. of magmatic activity, including caldera collapse and renewed caldera-filling volcanism, has created a structural and thermal chimney that channels magma ascent. Holocene rhyolitic eruptions (1) have been confined mainly within the caldera in an area 5 km in diameter, (2) have...
Active high-resolution seismic tomography of compressional wave velocity and attenuation structure at Medicine Lake Volcano, northern California Cascade Range
J.R. Evans, J.J. Zucca
1988, Journal of Geophysical Research Solid Earth (93) 15016-15036
We determine compressional wave velocity and attenuation structures for the upper crust beneath Medicine Lake volcano in northeast California using a high-resolution active source seismic tomography method. Medicine Lake volcano is a basalt through rhyolite shield volcano of the Cascade Range, lying east of the range axis. The Pg wave from eight...
Sorption characteristics of organic compounds on hexadecyltrimethylammonium-smectite
Stephen A. Boyd, Max M. Mortland, Cary T. Chiou
1988, Soil Science Society of America Journal (52) 652-657
When hexadedyltrimethylammonium (HDTMA) ion is exchanged for metal cations like calcium in smectite, the sorptive properties of the clay are greatly modified. The resultant HDTMA-smectite complex behaves as a dual sorbent, in the sorption of organic compounds, in which the mineral fraction functions as a solid adsorbent and the organic...
The growth of geological structures by repeated earthquakes 1. Conceptual framework
G.C.P. King, R.S. Stein, J. B. Rundle
1988, Journal of Geophysical Research Solid Earth (93) 13307-13318
In many places, earthquakes with similar characteristics have been shown to recur. If this is common, then relatively small deformations associated with individual earthquake cycles should accumulate over time to create geological structures. Following this paradigm, we show that existing models developed to describe leveling line changes associated with the...
Petrology of ultramafic xenoliths from Loihi Seamount, Hawaii
D.A. Clague
1988, Journal of Petrology (29) 1161-1186
Ultramafic xenoliths were recovered in four alkalic lava flows from Loihi Seamount at depths between 2200 and 1400m. No xenolith bearing flows were sampled near the summit despite a concentrated dredge program. The flows, three of alkalic basalt and one of basanite, contain common olivine megacrysts and small xenoliths...
Seasonal occurrence of migrant whimbrels and bristle-thighed curlews on the Yukon-Kuskokwim Delta, Alaska
Colleen M. Handel, Christian P. Dau
1988, The Condor (90) 782-790
Migrant Whimbrels (Numenius phaeopus) and Bristle-thighed Curlews (N. tahitiensis) were recorded during five summers along coastal tundra of the Yukon-Kuskokwim Delta, Alaska. From June to September, 1975-1979, 358 flocks totalling 1,265 curlews were observed; an additional 54 flocks were identified by vocalization alone. Among the 359 flocks identified to species,...
The information content of high-frequency seismograms and the near-surface geologic structure of "hard rock" recording sites
E. Cranswick
1988, Pure and Applied Geophysics PAGEOPH (128) 333-363
Due to hardware developments in the last decade, the high-frequency end of the frequency band of seismic waves analyzed for source mechanisms has been extended into the audio-frequency range (>20 Hz). In principle, the short wavelengths corresponding to these frequencies can provide information about the details of seismic sources, but...
Uranium-series age estimates and paleoclimatic significance of Pleistocene tufas from the Lahontan basin, California and Nevada
Y. Lao, L. Benson
1988, Quaternary Research (30) 165-176
An extended chronology of Lahontan basin lake levels based on uranium-series age estimates correlates with the global ice-volume record. Lake highstands occur at or shortly after times of maximum ice-sheet size. Moderate size lakes occur when the global ice volume is about 80% of its maximum. The data indicate that...
Assimilation of granite by basaltic magma at Burnt Lava flow, Medicine Lake volcano, northern California: Decoupling of heat and mass transfer
T.L. Grove, R.J. Kinzler, M. B. Baker, J.M. Donnelly-Nolan, C.E. Lesher
1988, Contributions to Mineralogy and Petrology (99) 320-343
At Medicine Lake volcano, California, andesite of the Holocene Burnt Lava flow has been produced by fractional crystallization of parental high alumina basalt (HAB) accompanied by assimilation of granitic crustal material. Burnt Lava contains inclusions of quenched HAB liquid, a potential parent magma of the andesite, highly melted granitic crustal...
A tentative protocol for measurement of radon availability from the ground
A.B. Tanner
1988, Northeastern Environmental Science (7) 58-62
A procedure is being tested in order to determine its suitability for assessing the intrinsic ability of the ground at a particular site to supply radon (222Rn) to a basement structure to be built on the site. The mean migration distance, multiplied by the measured radon concentration gives the "Radon...
You asked for it! Use white amur for low cost weed control
S.H. Newton, J. M. Martin, J.N. Ferguson, D. L. Gray
1988, Aquaculture Magazine (13) 50-52
Atmospheric deposition effects on the chemistry of a stream in Northeastern Georgia
G. R. Buell, N.E. Peters
1988, Water, Air, & Soil Pollution (39) 275-291
The quantity and quality of precipitation and streamwater were measured from August 1985 through September 1986 in the Brier Creek watershed, a 440-ha drainage in the Southern Blue Ridge Province of northeastern Georgia, to determine stream sensitivity to acidic deposition. Precipitation samples collected at 2 sites had a volume-weighted average...
Interrelations of oxygen concentrations, fish density, and performance of Atlantic salmon in an ozonated water reuse system
H. A. Poston, R.C. Williams
1988, Progressive Fish-Culturist (50) 69-76
In a 16‐week study, we stocked duplicate groups of 3.3‐g Atlantic salmon (Salmo salar) in 25‐fish increments (25 to 100 fish/6.5‐L jar) and in 250‐fish increments (250 to 1,000 fish/144‐L trough), in an ozonated, 100% closed water reuse system, to examine changes in fish performance in response to rearing at...
Effect of feeding level and dietary electrolytes on the arginine requirement of rainbow trout (Salmo gairdneri)
Y. N. Chiu, R. E. Austic, G. L. Rumsey
1988, Aquaculture (69) 79-91
Experiments were conducted to determine the effect of level of feeding (restricted feeding and feeding to satiation) and dietary variations in the balance of monovalent minerals on the arginine requirement of rainbow trout fingerlings. Based on growth and efficiency of feed utilization for growth, the arginine requirement was lower (3.5%...
Thermal modelling of stepwise anatexis in a thrust-thickened sialic crust
E-An Zen
1988, Transactions of the Royal Society of Edinburgh, Earth Sciences (79) 223-235
One-dimensional modelling of the thermal history of a sialic crust thickened by multiple overstack thrusting of upper crustal material shows that anatexis is likely. both the uplift rate and the length of the incubation period between end of tectonism and start of uplift are important controls on the amount and...
Stromatolite- and coated-grain-bearing carbonate rocks of the western Brooks Range: A section in Geologic studies in Alaska by the U.S. Geological Survey during 1987
Julie A. Dumoulin
1988, Circular 1016
Carbonate rocks characterized by locally abundant stromatolites and coated grains have been found at several localities in the Baird Mountains and Ambler River quadrangles (fig. 1). These rocks are part of a belt of metasedimentary and metaigneous rocks that constitutes the southwestern flank of the Brooks Range; all are included...
Neogene stratigraphy, foraminifera, diatoms, and depositional history of Maria Madre Island, Mexico: Evidence of early Neogene marine conditions in the southern Gulf of California
C. McCloy, J.C. Ingle, J.A. Barron
1988, Marine Micropaleontology (13) 193-212
Foraminifera and diatoms have been analyzed from an upper Miocene through Pleistocene(?) sequence of marine sediments exposed on Maria Madre Island, largest of the Trés Marias Islands off the Pacific coast of Mexico. The Neogene stratigraphic sequence exposed on Maria Madre...
Developing a state water plan: Ground-water conditions in Utah, spring of 1988
Gail E. Cordy, G. J. Smith, D. Michael Roark, Patrick M. Lambert, John A. Yarbrough, Carole B. Burden, R. B. Garrett, D. C. Emett, Susan A. Thiros, G. W. Sandberg, R. W Puchta
1988, Cooperative Investigations Report 28
This is the twenty-fifth in a series of annual reports that describe ground-water conditions in Utah. Reports in this series, published 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...
Off-platform Silurian sequences in the Ambler River quadrangle: A section in Geologic studies in Alaska by the U.S. Geological Survey during 1987
Julie A. Dumoulin, Anita G. Harris
1988, Circular 1016
Lithofacies changes in coeval upper Paleozoic rocks have been used to unravel the tectonic history of northern Alaska (for example, Mayfield and others, 1983). Conodont biostratigraphy and detailed petrologic studies are now revealing facies differences in lower Paleozoic rocks that can also be used to constrain their tectono-sedimentary framework (Dumoulin...
