Volcanology and mineral deposits
P. W. Lipman
1990, Earthquakes & Volcanoes (USGS) (22) 230-231
Traditionally, volcanologists have focused on forecasting, observing, and interpreting events, processes, and products of eruptions at active volcanoes. Such work involves drama, beauty, fascination scientific problems, and the socially important aim of reducing risks to life and property. In contrast, old volcanic regions, which host many of the world's major hydrothermal-vein,...
Fine-grained rutile in the Gulf of Maine: Diagenetic origin, source rocks, and sedimentary environment of deposition
P. C. Valentine, J.A. Commeau
1990, Economic Geology (85) 862-876
The Gulf of Maine, an embayment of the New England margin, is floored by shallow, glacially scoured basins that are partly filled with late Pleistocene and Holocene silt and clay containing 0.7 to 1.0 wt percent TiO 2 , chiefly in the form of silt-size rutile. Eleven basins in the gulf are...
Perspectives on earthquake hazards in the New Madrid seismic zone, Missouri
P.C. Thenhaus
1990, Earthquakes & Volcanoes (USGS) (22) 4-21
A sequence of three great earthquakes struck the Central United States during the winter of 1811-1812 in the area of New Madrid, Missouri. they are considered to be the greatest earthquakes in the conterminous U.S because they were felt and caused damage at far greater distances than any other earthquakes...
A survey of three-dimensional numerical estuarine models
R. T. Cheng, P. E. Smith
1990, Conference Paper
The need for the International Decade of Natural Hazard Reduction
F. Press
1990, Earthquakes & Volcanoes (USGS) (22) 190-192
Natural disasters affect countires large and small, rich or poor, whatever their political persuasion. The toll exacted by natural calamities each year drains the human and economic resources of every nation and stands as one of the formidable barriers to national, regional, and world development. Over the last 20 years, natural...
The Pacific Northwest; linkage between earthquake and volcano hazards
R. S. Crosson
1990, Earthquakes & Volcanoes (USGS) (22) 219-225
AS the title of the magazine Earthquake and Volcanoes suggests, these two geological phenomena are often closely associated. Earthquakes frequently precede volcanic eruptions, and volcanoes are often sources of small to intermediate size earthquakes resulting from the movement of magma within the volcano's plumbing system. In the Pacific Northwest, the association between...
Can an earthquake prediction and warning system be developed?
Ambraseys N.N
1990, Earthquakes & Volcanoes (USGS) (22) 204-205
Natural disasters affect countries large and small, rich, or poor, whatever their political persuasion. The toll exacted by natural calamities each year drains the human and economic resources of every nation and stands as one of the formidable barriers to national, regional, and world development. Over the last 20 years, natural...
Present state of studies of volcanic risk in Colombia
C. A. Carvajal
1990, Earthquakes & Volcanoes (USGS) (22) 226-226
Because of the reactivation of Nevado del Ruiz volcano in the last days of 1984, we began studies whose purpose was directed toward the identification of hte risks that accompanied such volcanic activity. As a result of these investigations there appeared a preliminary map of volcanic risk in Octoer 7,...
Geohydrology of the near-surface unsaturated zone adjacent to the disposal site for low-level radioactive waste near Beatty, Nevada: A section in Safe disposal of radionuclides in low-level radioactive-waste repository sites; Low-level radioactive-waste disposal workshop, U.S. Geological Survey, July 11-16, 1987, Big Bear Lake, Calif., Proceedings (Circular 1036)
Jeffrey M. Fisher
Marion S. Bedinger, Peter R. Stevens, editor(s)
1990, Conference Paper, Safe disposal of radionuclides in low-level radioactive-waste repository sites; Low-level radioactive-waste disposal workshop, U.S. Geological Survey, July 11-16, 1987, Big Bear Lake, Calif., Proceedings (Circular 1036)
Shallow-land burial in arid areas is considered the best method for isolating low-level radioactive waste from the environment (Nichols and Goode, this report; Mercer and others, 1983). A major threat to waste isolation in shallow trenches is ground-water percolation. Repository sites in arid areas are believed to minimize the risk...
The significance of climate in southern Nevada for the shallow burial of low-level radioactive wastes
W. D. Nichols
1990, Conference Paper, Proceedings, conference on nuclear waste isolation in the unsaturated zone
No abstract available....
Synthetic seismogram analysis of locally-recorded mine tremors
Arthur McGarr, J. Bicknell
1990, Conference Paper, ISRM International Symposium
The fitting of synthetic seismograms to locally-recorded, broad-band, wide dynamic range seismic data is a very effective means of determining both seismic source parameters and focal mechanisms of mine tremors. Using data from a single three-component surface station, in conjunction with a seismic location network, a comprehensive description of the...
Vegetative changes in a wetland in the vicinity of a well field, Dade County, Florida
Ronald H. Hofstetter, Roy S. Sonenshein
1990, Water-Resources Investigations Report 89-4155
Plant communities present in 1978 and 1986 were analyzed at 250 random points on stereoscopic pairs of aerial photographs for four study sites in the vicinity of the Northwest Well Field in Dade County, Florida. Sites NW and NE lie northwest of the well field beyond the cone of depression....
A hierarchy of soil databases for calibrating models of global climate change
Norman B. Bliss
1990, Conference Paper, Papers from the international conference on soils and the greenhouse effect
No abstract available....
Coastal barrier resources system mapping process
Mary C. Watzin
1990, Biological Report - US Fish & Wildlife Service (90) 21-26
The Coastal Barrier Resources Act of 1982 (P.L. 97-348) established the Coastal Barrier Resources System (system), a 452,834 acre system of undeveloped, unprotected coastal barriers along 666 shoreline miles of the Atlantic Ocean and Gulf of Mexico coasts. Within the 186 unites of the Coastal Barrier Resources System, most Federal...
Social scientist's viewpoint on conflict management
Madge O. Ertel
1990, Book, Managing water-related conflicts: the engineer's role: proceedings of the Engineering Foundation Conference, Sheraton Santa Barbara, Santa Barbara, California, November 5-10, 1989
Social scientists can bring to the conflict-management process objective, reliable information needed to resolve increasingly complex issues. Engineers need basic training in the principles of the social sciences and in strategies for public involvement. All scientists need to be sure that that the information they provide is unbiased by their...
Water resources data Maryland and Delaware, water year 1989, Volume 2: Monongahela and Potomac River Basins
R.W. James, R.H. Simmons, B.F. Strain, M.J. Smigaj
1989, Water Data Report MD-DE-89-2
No abstract available....
Water resources data Maryland and Delaware, water year 1989, Volume 1. Atlantic Slope Basins, Delaware River through Patuxent River
R.W. James, R.H. Simmons, B.F. Strain, M.J. Smigaj
1989, Water Data Report MD-DE-89-1
No abstract available....
Robustness of disaggregate oil and gas discovery forecasting models
Emil D. Attanasi, J.H. Schuenemeyer
1989, Marine and Petroleum Geology (6) 270-276
The structural geometry and evolution of foreland thrust systems, northern Virginia
Mark A. Evans
1989, Geological Society of America Bulletin (101) 339-354
Seismic reflection data reveal that the structural geometry of the central Appalachians of northern Virginia consists of three distinct thrust systems. Each thrust system is characterized by a unique internal geometry.The Blue Ridge thrust sheet is a composite thrust sheet composed primarily of imbricated Precambrian crystalline rocks. It over-rode Cambrian-Ordovician...
Habitat suitability criteria for assessment of instream flow needs of fish
Johnie H. Crance
1989, Book, Proceedings of the 1989 Georgia Water Resources Conference
In the western portion of the United States, competition for stream water gas often been fierce. Water resource management agencies in the southeastern United States, where water has been relatively abundant, are not being faced with similar competing demands for water, and with increasing pressures to develop and defend...
Can we determine the biological availability of sediment-bound trace elements?
Samuel N. Luoma
1989, Hydrobiologia (176) 379-396
It is clear from available data that the susceptibility of biological communities to trace element contamination differs among aquatic environments. One important reason is that the bioavailability of metals in sediments appears to be altered by variations in sediment geochemistry. However, methods for explaining or predicting the effect of sediment...
Development of the Wink Sink in west Texas, U.S.A., due to salt dissolution and collapse
K. S. Johnson
1989, Environmental Geology and Water Sciences (14) 81-92
The Wink Sink, in Winkler County, Texas, is a collapse feature that formed in June 1980 when an underground dissolution cavity migrated upward by successive roof failures until it breached the land surface. The original cavity developed in the Permian Salado Formation salt beds more than 400 m (1,300 ft)...
Water use data for public water suppliers and self supplied industry in Utah: 1986, 1987
1989, Utah Division of Water Rights Water-Use Report 7
This is the seventh in a continuing series of reports presenting water use data for Utah. The report is a summary of data collected under the Utah Water Use program, a cooperative program between the Utah Division of Water Rights and the United States Geological Survey (USGS)...
Acidic deposition to streams: A geology-based method predicts their sensitivity
Owen P. Bricker, Karen C. Rice
1989, Environmental Science & Technology (23) 379-385
All water that reaches watershed systems comes directly or indirectly from precipitation. Normally, this water contains very small amounts of dissolved solids and is only slightly acidic. As a result of chemical reactions in watersheds, however, stream water generated from precipitation normally is less acidic and contains larger concentrations of...
Ground-water conditions in Utah, spring of 1989
Carole B. Burden, G. J. Smith, Michael R. Greene, James P. Eads, D.V. Allen, John A. Yarbrough, Lynette E. Brooks, R. B. Garrett, W.C. Brothers, R. W Puchta, R.L. Swenson, D. C. Emett, W.R. Overman, G. W. Sandberg, B.K. Thomas
1989, Cooperative Investigations Report 29
This is the twenty-sixth 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...
