Using analytical services at the National Water Quality Laboratory
L.K. Pratt
1994, Open-File Report 94-26
The National Water Quality Laboratory (NWQL) offers a variety of analytical services for the determination of constituents in samples of water, sediment, and biological material. As technology has advanced, many new methods have been introduced but not always incorporated into plans and schedules developed in the districts. The strengths and...
Effects of water temperature on the toxicity of 4-nitrophenol and 2,4-dinitrophenol to developing rainbow trout (Oncorhynchus mykiss)
G.E. Howe, L. L. Marking, T.D. Bills, M.A. Boogaard, F.L. Mayer Jr.
1994, Environmental Toxicology and Chemistry (13) 79-84
Early-life-stage (ELS) toxicity tests were conducted to determine the effect of selected water temperatures on the toxicity of 4-nitrophenol and 2,4-dinitrophenol to rainbow trout (Oncorhynchus mykiss). NOECs were determined for growth and mortality at selected time intervals and water temperatures of 7, 12, and 17°C. As tests progressed, NOECs leveled...
Effects of water temperature and pH on toxicity of terbufos, trichlorfon, 4-nitrophenol and 2,4-dinitrophenol to the amphipod Gammarus pseudolimnaeus and rainbow trout (Oncorhynchus mykiss)
G.E. Howe, L. L. Marking, T.D. Bills, J.J. Rach, F.L. Mayer Jr.
1994, Environmental Toxicology and Chemistry (13) 51-66
Acute toxicity tests were conducted to determine (a) the individual and interactive effects of water temperature (7, 12, 17°C), pH (6 5, 7 5, 8 5, 9 5), and time on the toxicity of terbufos, trichlorfon, 4 nitrophenol, and 2,4-dinitrophenol to rainbow trout (Oncorhynchus mykiss) and the amphipod Gammarus pseudohmnaeus, and...
Routine processing of seismic hypocentral data using personal computers
T.L. Murray
1994, Open-File Report 94-170-A
Analysis of deep seismic reflection and other data from the southern Washington Cascades
W. D. Stanley, S. Y. Johnson, V. F. Nuccio
1994, Open-File Report 94-159
Geoenvironmental models of mineral deposits, and geology-based mineral-environmental assessments of public lands
G.S. Plumlee, K. S. Smith, W. H. Ficklin
1994, Open-File Report 94-203
Water resources activities in Florida 1993-94
M. E. Glenn (compiler)
1994, Open-File Report 94-330
This report contains descriptions of water resources activities in Florida conducted by the Water Resources Division of the U.S. Geological Survey in cooperation with Federal, State, and local agencies during 1993-94. These activities are part of the Federal program of appraising the Nation's water resources....
The French Creek Mine: St. Peters, Chester County, Pennsylvania
R. A. Sloto, L.L. Dickinson
1994, Mineralogical Record (25) 105-120
The French Creek mine has been a popular and prolific mineral collecting locality for over a century. Chalcopyrite occurs at the mine in spectacular specimens. Also notable are the fine cubic and octahedral pyrite crystals and octahedral magnetite crystals. -Authors...
The KRISP 90 seismic experiment-a technical review
C. Prodehl, J. Mechie, U. Achauer, Gordon R. Keller, M.A. Khan, Walter D. Mooney, S.J. Gaciri, J.D. Obel
1994, Tectonophysics (236) 33-60
On the basis of a preliminary experiment in 1985 (KRISP 85), a seismic refraction/wide-angle reflection survey and a teleseismic tomography experiment were jointly undertaken to study the lithospheric structure of the Kenya rift down to depths of greater than 200 km. This report serves as an introduction to a series...
Welded tuff porosity characterization using mercury intrusion, nitrogen and ethylene glycol monoethyl ether sorption and epifluorescence microscopy
M.M. Reddy, H.C. Claassen, D.W. Rutherford, C. T. Chiou
1994, Applied Geochemistry (9) 491-499
Porosity of welded tuff from Snowshoe Mountain, Colorado, was characterized by mercury intrusion porosimetry (MIP), nitrogen sorption porosimetry, ethylene glycol monoethyl ether (EGME) gas phase sorption and epifluorescence optical microscopy. Crushed tuff of two particle-size fractions (1-0.3 mm and less than 0.212...
Seismic character of gas hydrates on the Southeastern U.S. continental margin
Myung W. Lee, D. R. Hutchinson, Warren F. Agena, William P. Dillon, J. J. Miller, B.A. Swift
1994, Marine Geophysical Research (16) 163-184
Gas hydrates are stable at relatively low temperature and high pressure conditions; thus large amounts of hydrates can exist in sediments within the upper several hundred meters below the sea floor. The existence of gas hydrates has been recognized and mapped mostly on the basis of high amplitude Bottom Simulating...
The Scotts Mills, Oregon, earthquake of March 25, 1993; intensities, strong-motion data, and teleseismic data
J. W. Dewey, B.G. Reagor, D.A. Johnson, G. L. Choy, F. W. Baldwin
1994, Open-File Report 94-163
Geology of Holocene liquefaction features along the lower Columbia River at Marsh, Brush, Price, Hunting, and Wallace Islands, Oregon and Washington
B. F. Atwater (compiler)
1994, Open-File Report 94-209
Rapid geomorphic change caused by glacial outburst floods and debris flows along Tahoma Creek, Mount Rainier, Washington, USA
J. S. Walder, C. L. Driedger
1994, Arctic and Alpine Research (26) 319-327
As part of a hazards-assessment study, we examined the nature and rate of geomorphic change caused by outburst floods and debris flows along Tahoma Creek. Mount Rainier, since 1967. Archival aerial photographs of the area proved to be a rich source of qualitative geomorphic information. On the basis of limited...
Great Salt Lake basins study unit
Kidd M. Waddell, Robert L. Baskin
1994, Fact Sheet 046-94
In 1991, the U.S. Geological Survey (USGS) began implementing a full-scale National Water-Quality Assessment (NAWQA) Program.The long-term goals of the NAWQA Program are to describe the status and trends in the quality of a large, representative part of the Nation’s surface- and ground-water resources and to provide a sound, scientific...
Using PETRIMES to estimate mercury deposits in California
P.J. Lee, D.A. Singer
1994, Nonrenewable Resources (3) 190-199
In this article, we examine the use of an unconventional procedure, PETRIMES, to estimate mineral resources of mercury deposits in California. The study, which is based on the nonparametric discovery process model and Q-Q plots, suggests that a lognormal distribution is appropriate for the mercury deposits in California. The results...
Proximal pyroclastic deposits from the 1989-1990 eruption of Redoubt Volcano, Alaska - stratigraphy, distribution, and physical characteristics
C. A. Gardner, C.A. Neal, R. B. Waitt, R. J. Janda
1994, Journal of Volcanology and Geothermal Research (62) 213-250
More than 20 eruptive events during the 1989-1990 eruption of Redoubt Volcano emplaced a complex sequence of lithic pyroclastic-flow, -surge, -fall, ice-diamict, and lahar deposits mainly on the north side of the volcano. The deposits record the changing eruption dynamics from initial gas-rich vent-clearing explosions to episodic gas-poor lava-dome extrusions...
Ontogeny and evolution of salinity tolerance in anadromous salmonids: Hormones and heterochrony
S. D. McCormick
1994, Estuaries (17) 26-33
Use of estuaries and oceans by salmonids varies greatly, from no use in nonanadromous species, to movement toward the sea soon after hatching and emergence in some Pacific salmon. This variation is accompanied by large differences in the ontogeny of salinity tolerance among salmonids. Some species acquire increased salinity tolerance...
Generalized water-table map of Block Island, Rhode Island
H.E. Johnston, A.I. Veeger
1994, Open-File Report 92-49
The map shows the altitude of water table surface above seal level in the glacial deposits that form Block Island. Because the sediments are only moderately permeable, the water table is close to the to the surface in most parts of the island, even in hilly areas. The map represents...
Crustal architecture of the Cascadia Forearc
A.M. Trehu, I. Asudeh, Thomas M. Brocher, James H. Luetgert, Walter D. Mooney, J.L. Nabelek, Y. Nakamura
1994, Science (266) 237-243
Seismic profiling data indicate that the thickness of an accreted oceanic terrane of Paleocene and early Eocene age, which forms the basement of much of the forearc beneath western Oregon and Washington, varies by approximately a factor of 4 along the strike of the Cascadia subduction zone. Beneath the Oregon...
1993 Table of standard atomic weights abridged to five significant figures
T.B. Coplen, N.N. Greenwood, H.S. Peiser
1994, Inorganica Chimica Acta (217) 217-218
[No abstract available]...
Mineralogical studies of the nitrate deposits of Chile: VII. Two new saline minerals with the composition K6(Na,K)4Na6Mg10 (XO4) 12(IO3)12.12H2O: fuenzalidaite (X = S) and carlosruizite (X = Se)
J.A. Konnert, H. T. Evans Jr., J. J. McGee, G. E. Ericksen
1994, American Mineralogist (79) 1003-1008
Two new isostructural saline minerals from the nitrate deposits of northern Chile have the composition K6(Na,K)4Na6Mg10(XO4)12(IO3)12.12H2O: fuenzalidaite (X = S) and carlosruizite (X = Se,S,Cr). -from Authors...
Uranium-Series Ages of Marine Terrace Corals from the Pacific Coast of North America and Implications for Last-Interglacial Sea Level History
D.R. Muhs, G. L. Kennedy, T. K. Rockwell
1994, Quaternary Research (42) 72-87
Few of the marine terraces along the Pacific coast of North America have been dated using uranium-series techniques. Ten terrace sequences from southern Oregon to southern Baja California Sur have yielded fossil corals in quantities suitable for U-series dating by alpha spectrometry. U-series-dated terraces representing the ???80,000 yr sea-level high...
Ancient engineering geology projects in China; A canal system in Ganzu province and trenches along the Great Wall in Ningxia Hui Autonomous Region
R. E. Wallace, R.C. Bucknam, Thomas C. Hanks
1994, Engineering Geology (36) 183-195
Two major construction projects of ancient times in China involved what today would be considered engineering geology. We describe an ancient canal system in Gaotai County, Gansu province that was possibly begun in the Han dynasty (206 BC-220 AD). The canal system heads at the Dasha River and extends northwestward...
Suspended sediments of the modern Amazon and Orinoco rivers
R.H. Meade
1994, Quaternary International (21) 29-39
The Amazon and Orinoco Rivers are massive transcontinental conveyance systems for suspended sediment. They derive about 90% of their sediment from the Andes that support their western headwaters, transport it for thousands of kilometers across the breadth of the continent and deposit it in the coastal zones of the Atlantic....
