Hydrothermal mineralization along submarine rift zones, Hawaii
J.R. Hein, A. E. Gibbs, D.A. Clague, M. Torresan
1996, Marine Georesources and Geotechnology (14) 177-203
This is the first article to describe mineralization of midplate submarine rift zones and hydrothermal manganese oxide mineralization of midplate volcanic edifices. Hydrothermal Mn oxides were recovered from submarine extensions of two Hawaiian rift zones, along Haleakala and Puna Ridges. These Mn oxides form two types of deposits, metallic stratiform...
National Digital Orthophoto Program
USDA Natural Resources Conservation Service, Farm Service Agency, National States Geographic Information Council, U.S. Forest Service, Water Resources Division, U.S. Geological Survey
1996, Report
A critical component of the National Spatial Data Infrastructure (NSDI) is Framework. Framework provides a base on which to collect, register, and integrate geospatial information accurately and consistently. The Federal Geographic Data Committee (FGDC) proposed that Framework include geodetic control, orthoimagery, elevation, transportation, hydrography, governmental units, and cadastral data. The...
Mineral Commodity Summaries 1996
Water Resources Division, U.S. Geological Survey
1996, Mineral Commodity Summaries 1996
This report is the earliest Government publication to furnish estimates covering 1995 nonfuel mineral industry data. Most of the estimates are based on at least 6 months of data. These data sheets contain information on the domestic industry structure, Government programs, tariffs, and 5-year salient statistics for over 90 individual...
Human transformation processes—origins and philosophy of a temporal database
W. Acevedo, T.W. Foresman, J. T. Buchanan
1996, Sistema Terra (5) 32-38
No abstract available....
Level II scour analysis for Bridge 37 (BETHTH00070037) on Town Highway 007, crossing Gilead Brook, Bethel, Vermont
Michael A. Ivanoff, Matthew A. Weber
1996, Open-File Report 96-233
Interactions of mercury with dissolved organic carbon in the Florida Everglades
George R. Aiken, Michael M. Reddy
1996, Fact Sheet 186-96
There has been increased awareness by both public and scientific communities over mercury contamination of game fish in South Florida. Effective management strategies for dealing with this problem will require a more thorough understanding of the factors and processes that result in the generation and transport of mercury, and control...
South Florida Ecosystem Program database development
J.A. Stapleton, Roy Sonenshein, Bob Halley
1996, Fact Sheet 174-96
Purpose The South Florida Ecosystem Restoration Program is an intergovernmental effort to reestablish and maintain the ecosystem of south Florida. One element of the restoration effort is the development of a firm scientific basis for resource decision making. The U.S. Geological Survey (USGS) is one of the agencies that provides...
South Florida Ecosystem Program web site
Water Resources Division, U.S. Geological Survey
1996, Fact Sheet 155-96
Introduction The South Florida Ecosystem Restoration Program is an intergovernmental effort, involving a number of agencies, to reestablish and maintain the ecosystem of south Florida. One element of the restoration effort is the development of a firm scientific basis for resource decision making. The U.S. Geological Survey (USGS), one of...
Sampling design for assessing water quality of the Red River of the North basin, Minnesota, North Dakota, and South Dakota, 1993-1995
D. L. Lorenz, J.D. Stoner
1996, Water-Resources Investigations Report 96-4129
This map report describes the sampling design for a comprehensive regional assessment of water quality in the Red River of the North Basin, a study unit under the U.S. Geological Survey’s National Water-Quality Assessment Program. The sampling design was developed to address questions about the presence, distribution, and loads of...
Selected geochemical characteristics of ground water from the Marshall aquifer in the central Lower Peninsula of Michigan
Patricia B. Ging, David T. Long, Roger W. Lee
1996, Water-Resources Investigations Report 94-4220
Chemistry and stable-isotope data for water from wells completed in the Marshall aquifer within the Michigan Basin were used to prepare maps that show area! variations of δ18O; distribution of dissolved solids, dissolved chloride, dissolved iron, and dissolved sulfate; and distribution of hydrochemical facies. Delta oxygen-18 values indicate the presence of...
Occurrence of selected contaminants in water, fish tissue, and streambed sediments in central Nebraska, 1992-95
Steven A. Frenzel
1996, Open-File Report 96-223
Surface and ground water in Nebraska may contain contaminants resulting from human activities. For purposes of this publication, a contaminant is any element or compound whose presence may affect the water's suitability for certain uses. For example, herbicide concentrations may exceeed the U.S. Environmental Protection Agency's (USEPA) Health Advisory Levels...
Damage and restoration of geodetic infrastructure caused by the 1994 Northridge, California, earthquake
Kathleen M. Hodgkinson, Ross S. Stein, Kenneth W. Hudnut, Jay Satalich, John H. Richards
1996, Open-File Report 96-517
We seek to restore the integrity of the geodetic network in the San Fernando, Simi, Santa Clarita Valleys and in the northern Los Angeles Basin by remeasurement of the network and identification of BMs which experienced non-tectonic displacements associated with the Northridge earthquake. We then use the observed displacement of...
Digital geologic map of Lawton quadrangle, southwestern Oklahoma
Joel R. Cederstrand
1996, Open-File Report 96-376
This data set consists of digital data and accompanying documentation for the surficial geology of the 1:250,000-scale Lawton quadrangle, Oklahoma. The original data are from the Geologic Map, sheet 1 of 4, included in the Oklahoma Geological Survey publication, 'Reconnaissance of the water resources of the Lawton quadrangle, southwestern Oklahoma',...
Chlordane, DDT, PCB's, and other selected organic compounds in Asiatic clams and yellow bullhead in the Potomac River Basin, 1992
Humbert Zappia
1996, Water-Resources Investigations Report 96-4210
Chlordane, DDT (dichlor-diphenyl-trichloroethane), and PCB's (polychlorinated biphenyls) were the most widespread organic contaminants detected during a 1992 survey of aquatic biological tissues in the Potomac River Basin. On the basis of existing U.S. Food and Drug Administration criteria, no new threats to human health were discovered, although chlordane concentrations may...
Borehole geophysical logging for water-resources investigations in Pennsylvania
Randall W. Conger
1996, Fact Sheet 218-95
Borehole geophysical logging is a procedure to collect and transmit specific information about the geologic formations penetrated by a well by raising and lowering a set of probes or sondes that contain water-tight instruments in the well. The data collected can be used to determine general formation geology, fracture distribution,...
Source, Movement, and Age of Ground Water in a Coastal California Aquifer
John A. Izbicki
1996, Fact Sheet 126-96
Hydrogeologic framework of the diabase aquifer at the Boarhead Farms Superfund site, Bridgeton Township, Bucks County, Pennsylvania
Curtis L. Schreffler
1996, Water-Resources Investigations Report 96-4090
The hydrogeologic investigation at the Boarhead Farms Superfund site was done to characterize the framework of the diabase aquifer underlying the site. The primary water-producing fracture system is less than 30 feet below land surface. Water-bearing fractures were not found deeper than 50 feet below land surface. The overburden soil...
Configuration of freshwater/saline-water interface and geologic controls on distribution of freshwater in a regional aquifer system, central lower peninsula of Michigan
David B. Westjohn, T. L. Weaver
1996, Water-Resources Investigations Report 94-4242
Electrical-resistivity logs and water-quality data were used to delineate the fresh water/saline-water interface in a 22,000-square-mile area of the central Michigan Basin, where Mississippian and younger geologic units form a regional system of aquifers and confining units.Pleistocene glacial deposits in the central Lower Peninsula of Michigan contain freshwater, except in...
Hydrogeologic framework of Mississippian rocks in the central Lower Peninsula of Michigan
David B. Westjohn, Thomas L. Weaver
1996, Water-Resources Investigations Report 94-4246
Sedimentary rocks of Mississippian age form the lower part of a regional aquifer system in the central Lower Peninsula of Michigan. Strata of the Michigan Formation, the Marshall Sandstone, and the Coldwater Shale were subdivided into an aquifer and two confining units on the basis of hydraulic properties. The Michigan...
Selected geochemical characteristics of ground water from the Saginaw aquifer in the central Lower Peninsula of Michigan
B. D. Meissner, David T. Long, Roger W. Lee
1996, Water-Resources Investigations Report 93-4220
Chemical and stable-isotope data of water from wells completed in the Saginaw aquifer in the central Lower Peninsula of Michigan were used to prepare maps that show areal variation of δ18O; distribution of dissolved solids, dissolved chloride, dissolved iron, dissolved sulfate; and distribution of hydrochemical facies. Delta oxygen-18 values indicate...
Computer input and output files associated with ground-water-flow simulations of the Albuquerque Basin, central New Mexico, 1901-94, with projections to 2020; (supplement one to U.S. Geological Survey Water-resources investigations report 94-4251)
J. M. Kernodle
1996, Open-File Report 96-208
This report presents the computer input files required to run the three-dimensional ground-water-flow model of the Albuquerque Basin, central New Mexico, documented in Kernodle and others (Kernodle, J.M., McAda, D.P., and Thorn, C.R., 1995, Simulation of ground-water flow in the Albuquerque Basin, central New Mexico, 1901-1994, with projections...
Computer input and output files associated with ground-water-flow simulations of the Albuquerque Basin, central New Mexico, 1901-95, with projections to 2020; (supplement three to U.S. Geological Survey Water-resources investigations report 94-4251)
J. M. Kernodle
1996, Open-File Report 96-210
This report presents the computer input files required to run the three-dimensional ground-water-flow model of the Albuquerque Basin, central New Mexico, documented in Kernodle and others (Kernodle, J.M., McAda, D.P., and Thorn, C.R., 1995, Simulation of ground-water flow in the Albuquerque Basin, central New Mexico, 1901-1994, with projections to 2020:...
South Florida High-accuracy elevation data collection project
Water Resources Division, U.S. Geological Survey
1996, Fact Sheet 162-96
BackgroundThe major issues facing ecosystem restoration and management in south Florida are centered on the availability and distribution of clean, fresh water. Surface water flow modeling studies are an important aspect of the scientific information needs of the ecosystem restoration initiative. Hydrologic models provide much needed predictive capabilities for evaluating...
Water flows and nutrient loads to the southwest coast of Florida—A study
Victor A. Levesque
1996, Fact Sheet 179-96
BackgroundThe embayments and estuaries of Florida's southwest coast are an integral part of the south Florida ecosystem. Nutrients and other constituents are transported to these coastal waters by surface water and ground-water flow from the Everglades National Park (ENP) and the Big Cypress Preserve and by longshore and offshore tidal...
Invisible CO2 gas killing trees at Mammoth Mountain, California
Michael L. Sorey, Christopher D. Farrar, William C. Evans, David P. Hill, Roy A. Bailey, James W. Hendley II, Peter H. Stauffer
1996, Fact Sheet 172-96
Since 1980, scientists have monitored geologic unrest in Long Valley Caldera and at adjacent Mammoth Mountain, California. After a persistent swarm of earthquakes beneath Mammoth Mountain in 1989, earth scientists discovered that large volumes of carbon dioxide (CO2) gas were seeping from beneath this volcano. This gas is killing trees...
