Deep continental margin reflectors
J. Ewing, J. Heirtzler, M. Purdy, Kim D. Klitgord
1985, Eos, Transactions, American Geophysical Union (66) 448-448
In contrast to the rarity of such observations a decade ago, seismic reflecting and refracting horizons are now being observed to Moho depths under continental shelves in a number of places. These observations provide knowledge of the entire crustal thickness from the shoreline to the oceanic crust on passive margins...
A note on the effect of bottom currents on an ocean bottom seismometer
Anne M. Trehu
1985, Bulletin of the Seismological Society of America (75) 1195-1204
Two three-component ocean bottom seismometers and a current meter were deployed a few hundred meters apart on the southern Blake Plateau off the United States eastern coast to study the effect of near-bottom currents on the background noise level of seismometers. Although analysis of the data is limited somewhat by...
A comparative study of stream water and stream sediment as geochemical exploration media in the Rio Tanama porphyry copper district, Puerto Rico
R. E. Learned, T. T. Chao, R. F. Sanzolone
1985, Journal of Geochemical Exploration (24) 175-195
To test the relative effectiveness of stream water and sediment as geochemical exploration media in the Rio Tanama porphyry copper district of Puerto Rico, we collected and subsequently analyzed samples of water and sediment from 29 sites in the rivers and tributaries of the district. Copper, Mo, Pb, Zn, SO42−,...
Analysis of the low-flow characteristics of streams in Louisiana
Fred N. Lee
1985, Water Resources Technical Report of the Louisiana Department of Transportation and Development, Office of Public Works 35
The U.S. Geological Survey, in cooperation with the Louisiana Department of Transportation and Development, Office of Public Works, used geologic maps, soils maps, precipitation data, and low-flow data to define four hydrographic regions in Louisiana having distinct low-flow characteristics. Equations were derived, using regression analyses, to estimate the 7Q2, 7Q10,...
EVALUATION OF THE EFFECTS OF WEATHERING ON A 50-YEAR OLD RETORTED OIL-SHALE WASTE PILE, RULISON EXPERIMENTAL RETORT, COLORADO.
Michele L. Tuttle, Walter E. Dean, Daniel J. Ackerman
Gary James H., editor(s)
1985, Conference Paper, Oil Shale Symposium Proceedings
An oil-shale mine and experimental retort were operated near Rulison, Colorado by the U. S. Bureau of Mines from 1926 to 1929. Samples from seven drill cores from a retorted oil-shale waste pile were analyzed to determine 1) the chemical and mineral composition of the retorted oil shale and 2)...
YELLOWSTONE MAGMATIC-HYDROTHERMAL SYSTEM, U. S. A.
R.O. Fournier, A.D. Pitt
Stone Claudia, editor(s)
1985, Conference Paper
At Yellowstone National Park, the deep permeability and fluid circulation are probably controlled and maintained by repeated brittle fracture of rocks in response to local and regional stress. Focal depths of earthquakes beneath the Yellowstone caldera suggest that the transition from brittle fracture to quasi-plastic flow takes place at about...
Trace element content of gossans at four mines in the West Shasta massive sulfide district
R. F. Sanzolone, J. A. Domenico
1985, Economic Geology (80) 2206-2212
We evaluated the trace element content of gossans at four mines in the West Shasta Cu-Zn mining district in California. We found little difference in trace element content between the chipped rock rind and whole-rock gossan samples. Gossans derived from disseminated sulfides were found to have a lower trace element...
Notes on sedimentation activities calendar year 1984
U.S. Interagency Advisory Committee on Water Data- Subcommittee on Sedimentation
1985, Report
This report is a digest of information furnished by Federal agencies conducting sedimentation investigations. The decision to publish the report was made in 1946, from a proposal by the Chairman of the Federal Interagency River Basin Committee, Subcommittee on Ground Water. The Subcommittee approved the proposal and agreed to issue...
RE-EVALUATION OF THE ORIGIN AND DIAGENESIS OF BORATE DEPOSITS, DEATH VALLEY REGION, CALIFORNIA.
Charles E. Barker, James M. Barker
Barker James M.Lefond Stanley J., editor(s)
1985, Conference Paper
An understanding of the age of the major borate deposits in the Furnace Creek Formation, their origin and facies relationships, as well as their diagenetic and thermal history, are integrated to provide a geological model of borate deposition in a heliothermal, saline, perennial lake....
Compilation of hydrologic data for the Edwards Aquifer, San Antonio area, Texas, 1982, with 1934-82 summary
R.D. Reeves, G. B. Ozuna
1985, Edwards Underground Water District Bulletin 42
No abstract available....
Removal of iron interferences by solvent extraction for geochemical analysis by atomic-absorption spectrophotometry
L. Zhou, T. T. Chao, R. F. Sanzolone
1985, Talanta (32) 475-478
Iron is a common interferent in the determination of many elements in geochemical samples. Two approaches for its removal have been taken. The first involves removal of iron by extraction with methyl isobutyl ketone (MIBK) from hydrochloric acid medium, leaving the analytes in the aqueous phase. The second consists of...
PRELIMINARY EVALUATION OF LANDSAT-4 THEMATIC MAPPER DATA FOR THEIR GEOMETRIC AND RADIOMETRIC ACCURACIES.
M.H. Podwysoki, N. Falcone, L.U. Bender, O. D. Jones
Barker John L., editor(s)
1985, Conference Paper, NASA Conference Publication
This report describes results of some preliminary analyses of Landsat-4 Thematic Mapper data for the NASA Landsat Image Quality Analysis program. The work is being done under interagency agreement S-12407-C between the U. S. Geological Survey and NASA-Goddard Space Flight Center. Landsat-4 TM scenes for Washington, D. C. Macon, Georgia...
Use of cultured fish in sport fisheries management in the United States of America
R.E. Stevens, J. P. McCraren, K.W. McAllister
R.H. Stroud, editor(s)
1985, Book chapter, World Angling Resources and Challenges
No abstract available at this time...
Publications of the U.S. Geological Survey, 1984
Water Resources Division, U.S. Geological Survey
1985, Report
This catalog is a list of (1) books and mapsl that were published during 1984, and (2) articles by Geological Survey personnel in non-Geological Survey journals and books that came to our attention in 1984; it supplements the permanent catalogs "Publications of the Geological Survey, 1879-1961" and "Publications of the...
BORATE DEPOSITS IN THE UNITED STATES: DISSIMILAR IN FORM, SIMILAR IN GEOLOGIC SETTING.
George I. Smith
Barker James M.Lefond Stanley J., editor(s)
1985, Conference Paper
Borate deposits in the western United States have several geologic characteristics in common: All primary deposits are about 20 my or less in age, and they are observed or inferred to be stratigraphically associated with volcanic activity and thermal springs. Most of them lie at least partially in the lacustrine...
Maryland striped bass: Recruitment declining below replacement
C.P. Goodyear, J.E. Cohen, S.W. Christensen
1985, Transactions of the American Fisheries Society (114) 146-151
A mathematical technique was developed to examine interrelationships among first‐year survival rates, adult fecundity, and adult survival of striped bass Morone saxatilis based on indices of year‐class strength. Application of this technique to striped bass in Maryland waters of the Chesapeake Bay provided evidence for reduced survival in the life...
Relationship between reported commercial landings and abundance of young striped bass in Chesapeake Bay, Maryland
C.P. Goodyear
1985, Transactions of the American Fisheries Society (114) 92-96
The ability to predict subsequent landings of striped bass Morone saxatilis from the indices of abundance of juveniles (young of the year) determined annually by the Maryland Department of Natural Resources was evaluated by multiple‐regression techniques. About 57% of the variation in reported landings could be accounted for by the...
STATE WATER RESOURCES RESEARCH INSTITUTE PROGRAM: GROUND WATER RESEARCH.
James S. Burton
Schmidt Kenneth D., editor(s)
1985, Conference Paper
This paper updates a review of the accomplishments of the State Water Resources Research Program in ground water contamination research. The aim is to assess the progress made towards understanding the mechanisms of ground water contamination and based on this understanding, to suggest procedures for the prevention and control of...
Occurrence and preservation of Eocene squamariacean and coralline rhodoliths: Eau, Tonga
Binyamin Buchbinder, Robert B. Halley
Donald F. Toomey, Matthew H. Nitecki, editor(s)
1985, Book chapter, Paleoalgology: Contemporary research and applications
A widespread rhodolith facies occurs within middle Eocene limestones of Eua, Tonga (Fig. 1). These limestones, first described by Hoffmeister (1932), represent a portion of a broad, early Tertiary platform that developed in the Tonga area prior to disruption and uplift by later Tertiary plate movements (Kroenke and Tongilava 1975)....
Potentiometric map of the Eutaw-McShan aquifer in northeastern Mississippi, fall 1982
Daphne Darden
1985, Water-Resources Investigations Report 85-4042
No abstract available....
Map showing the potentiometric surface of the Magothy aquifer in southern Maryland, September 1983
Frederick K. Mack, Judith C. Wheeler, Stephen E. Curtin
1985, Water-Resources Investigations Report 85-4000
No abstract available....
Aeromagnetic map and analysis of aeromagnetic and aeroradioactivity data in the Blood Mountain, Chattahoochee, and Tray Mountain Roadless Areas, northern Georgia
David L. Daniels
1985, Miscellaneous Field Studies Map 1347-E
The data for the aerornagnetic map of the Blood Mountain, Chattahoochee, and Tray Mountain Roadless Areas and vicinity were compiled from two separate airborne surveys {U.S. Geological Survey, 1977, 1981) produced in cooperation with the State of Georgia. These surveys were flown by fixed - wing aircraft in 1976 and...
The use of plants in prospecting for gold: A brief overview with a selected bibliography and topic index
J. A. Erdman, J. C. Olson
1985, Journal of Geochemical Exploration (24) 281-304
The focal point of this report is a bibliography of 133 references and an associated topic index — both of which could be useful to geochemists attempting to locate new Au deposits. Fifty of these references originated in the Soviet Union, where most of the initial work on biogeochemical exploration...
Summary of data on the age of the Orca Group, Alaska: A section in The United States Geological Survey in Alaska: Accomplishments during 1984
George Plafker, Gerta Keller, Steven W. Nelson, Julie A. Dumoulin, Marti L. Miller
1985, Circular 967
The Orca Group is a widespread, thick, complexly deformed accretionary sequence of flysch and tholeiitic basalt in the Prince William Sound area (Winkler, 1976; Winkler and Plafker, 1981) (fig. 49). Despite a number of extensive field studies of the Orca Group, reliable data on the age of the unit have...
Diving depths of four alcids
John F. Piatt, David N. Nettleship
1985, The Auk (102) 293-297
Incidental catches of 12,243 Common Murres (Uria aalge), 875 Atlantic Puffins (Fratercula arctica), 36 Black Guillemots (Cepphus grylle), and 9 Razorbills (Alca torda) were recorded off Newfoundland during the summers of 1980-1982 (26,445 net-days of fishing effort). Most catch occurred in stationary gill nets set on the sea floor at...
