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Search indexed USGS publications on groundwater, aquifers, geologic maps, mineral resources and earthquakes. Explore source records by subject and place.

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At least 865 records · Page 48Linked to original sources
USGS1993

Water-resources activities in Utah by the U.S. Geological Survey, October 1, 1991, to September 30, 1992

This report contains summaries of the progress of water-resources studies in Utah by the U.S. Geological Survey, Water Resources Division, Utah District, from October 1, 1991, to September 30, 1992. The program in Utah during this period consisted of 20 projects; a discussion of each project is presented in the main body of this report. The following sections outline the origin of the U.S. Geological Survey, the basic mission of the Water Resources Division, the organizational structure of the Utah District, the distribution of District funding in terms of source of funds and type of activity funded, and the agencies with which the District cooperates. The last part of the introduction is a list of reports produced by the District from October 1991 to September 1992.

Utah↗
USGS1993

Ground-water concerns for the Eastern Shore, Virginia

The Eastern Shore of Virginia is a peninsula that is surrounded on three sides by salty water and has no major fresh surface-water sources; groundwater provides the sole freshwater supply. Beginning in about 1965, increases in groundwater withdrawals for agricultural, commercial, urban, and industrial uses have caused water-level declines and have created cone-like depressions in the water-level surface around major pumping centers near the Towns of Accomac, Cape Charles, Cheriton, Chincoteague, Exmore, and Hallwood, Virginia. Increased water withdrawals could adversely affect the supply of fresh groundwater on the Eastern Shore. In 1992, the U.S. Geological Survey, in cooperation with the Virginia Department of Environmental Quality and the counties of Accomack and Northampton, completed a comprehensive study of the groundwater resources of the Eastern Shore. This report highlights the major results of that study. (USGS)

Open-File Report↗
USGS1994

Campground talk and slide show on volcanoes for Chiricahua National Monument

The slides and the accompanying script presented here are based on a campground presentation at Chiricahua National Monument in 1994. Examples of eruptions at active volcanoes are used to help the audience visualize events that took place in the National Monument 27 million years ago. This presentation stresses the following themes: 1) The National Monument lies on the flank of an ancient volcano known as the Turkey Creek caldera. 2) This volcano produced giant explosive eruptions, much larger than any in the 20th century. Similar volcanoes that are still capable of producing giant eruptions exist today, and include examples in the United States. 3) We can learn how these giant volcanoes operate and what their typical "life histories" are by examining ancient analogues such as the Turkey Creek caldera that have been dissected by erosion. Studies of ancient volcanoes provide the conceptual framework for evaluating hazards at active volcanoes. 4) Large eruptions of the type that occurred in the Chiricahua Mountains are highly explosive. As a result, the molten rock, or magma, that feeds such eruptions is "blown to bits", producing volcanic ash and pumice instead of lava flows. 5) The volcanic history of Chiricahua National Monument can be reconstructed by geologic mapping and by "reading" the record of past eruptions from the layers of rock that were deposited by the volcano. The slides and script follow the format of the 1994 campground presentation. Slides are keyed to the script by number. Italic print is used to identify the subject and source of each slide, and to provide additional background information. This document is intended to be used by interpreters at the National Monument for presentations on geology. It may be used as a complete "packaged" talk or as background material for customized presentations. Additional information for the non-specialist on the geology of Chiricahua National Monument is available in a separate report (Pallister and others, 1993).

Open-File Report↗
USGS1993

Policy and procedures for the management and archival storage of data collected for hydrologic investigations, U.S. Geological Survey, Indiana District

This report describes the policy and procedures used by the Indiana District of the U.S. Geological Survey, Water Resources Division, to manage and store data collected during hydrologic investigations. It is the policy of the Indiana District that data collected to meet the objectives of projects for hydrologic investigations be documented, organized, and archieved in a manner that (1) facilitates retrieval, evaluation, and use by other District personnel, and (2) enables verifi- cation of data contained in all reports and computer data bases.

Indiana↗
USGS1996

Water-resources activities of the U.S. Geological Survey in Utah, October 1, 1993, to September 30, 1994

This report contains summaries of the progress of water-resources studies in Utah by the U.S. Geological Survey, Water Resources Division, Utah District, from October 1, 1993, to September 30, 1994. The water-resources program in Utah during this period consisted of 21 projects; a discussion of each project is presented in the main body of this report. The following sections outline the origin of the U.S. Geological Survey, the basic mission of the Water Resources Division, the organizational structure of the Utah District, office addresses of the Utah District, the distribution of District funding in terms of source of funds and type of activity funded, and the agencies with which the District cooperates. The last part of the introduction is a list of reports produced by the District from October 1993 to September 1994.

Open-File Report↗
USGS1996

Water-resources activities of the U.S. Geological Survey in Utah, October 1, 1994, to September 30, 1995

This report contains summaries of the progress of water-resources studies in Utah done by the U.S. Geological Survey, Water Resources Division, Utah District, from October 1,1994, to September 30, 1995. The waterresources program in Utah during this period consisted of 23 projects; a discussion of each project is presented in the main body of this report. The following sections outline the origin of the U.S. Geological Survey, the basic mission of the Water Resources Division, the organizational structure of the Utah District, office addresses of the Utah District, the distribution of program funding as source of funds and type of activity funded in Federal Fiscal Year (FY) 1995 (October 1, 1994, to September 30,1995), and the agencies with which the District cooperates. The last part of the introduction is a list of reports produced by the District from October 1994 to September 1995.

Utah↗
USGS1997

Map showing outcrop of the coal-bearing units and land use in the Gulf Coast region

This map is a preliminary compilation of the outcrop geology of the known coal-bearing units in the Gulf Coast Coal region. The map has been compiled for use in the National Coal Resource Assessment Project currently being conducted by the U.S. Geological Survey, and will be updated as the assessment progresses. The purpose of the map is to show the distribution of coal-bearing rocks in the Gulf Coastal Plain Region and to show stratigraphic correlations, transportation network, fossil-fuel burning power plants, and federally managed lands in the region. It is hoped that this map may aid coal exploration and development in the region. Geologic contacts were digitized from paper copies of the maps listed in the reference section below. The primary source of information was the 1:500,000-scale state geology map series, but larger scale maps were use to better define certain areas, notably the Jackson-Claiborne contact in western Kentucky and Tennessee for example (Olive, 1980). Contacts along state boundaries were modified to best-fit information available from the border areas. Note that coal distribution in the mapped units is not uniform. For example, the Jackson Group contains coal in Texas, but in Mississippi is not presently known to contain significant coal deposits. The unit is widespread and in part non-marine and thus of potential future interest. In contrast, the Jackson Group is not shown in Georgia where it is mostly marine and residuum (weathered material) at the surface. Tertiary age coal has also been noted in the Vicksburg Group (Oligocene) of Louisiana and Mississippi, but is not shown on this map. Contacts with mapped surficial units are not always shown. The locations of coal mine permit boundaries are based on information available at the time of publication and were obtained from the Division of Surface Mining and Reclamation, Railroad Commission of Texas, Austin, and the Injection and Mining Division, Department of Natural Resources, Baton Rouge, Louisiana. The correlation of map units and formation names generally follow Galloway and others (1991). We have placed the Paleocene-Eocene boundary in the middle of the Calvert Bluff Formation in Texas based on unpublished pollen biostratigraphy reports (N.O. Fredericksen, unpublished data, 1993; D.J. Nichols, unpublished data, 1996).

Alabama, Arkansas, Georgia, Florida, Kansas, Kentu↗
USGS1997

Water-resources activities of the U.S. Geological Survey in Utah, October 1, 1995, to September 30, 1996

This report contains summaries of the progress of water-resources activities of the U.S. Geological Survey (USGS), Water Resources Division, Utah District, from October 1, 1995, to September 30, 1996. The waterresources program in Utah during this period consisted of 22 projects; a discussion of each project is presented in the main body of this report. The following sections outline the origin of the USGS, the mission of the Water Resources Division, the organizational structure of the Utah District, office addresses of the Utah District, the distribution of program funding as source of funds and type of activity funded in Federal Fiscal Year 1996 (FY96) (October 1, 1995, to September 30, 1996), and the agencies with which the District cooperates. The last part of the introduction is a list of reports produced by the District from October 1995 to September 1996.

Utah↗
USGS1998

Water-resources activities of the U.S. Geological Survey in Utah, October 1, 1996, to September 30, 1997

This report contains summaries of the progress of water-resources activities of the U.S. Geological Survey (USGS), Water Resources Division, Utah District, from October 1, 1996, to September 30,1997. The waterresources program in Utah during this period consisted of 25 projects, and a discussion of each project is presented. The following sections outline the origin of the USGS, the mission of the Water Resources Division, the organizational structure of the Utah District, office addresses of the Utah District, the distribution of program funding as source of funds and type of activity funded in Federal Fiscal Year 1997 (FY97) (October 1,1996, to September 30, 1997), and the agencies with which the District cooperates. The last part of the introduction is a list of reports produced by the District from October 1996 to September 1997.

Utah↗
USGS2002

Catalog of earthquake hypocenters at Alaskan volcanoes: January 1, 2000 through December 31, 2001

The Alaska Volcano Observatory (AVO), a cooperative program of the U.S. Geological Survey, the Geophysical Institute of the University of Alaska Fairbanks, and the Alaska Division of Geological and Geophysical Surveys, has maintained seismic monitoring networks at potentially active volcanoes in Alaska since 1988 (Power and others, 1993; Jolly and others, 1996; Jolly and others, 2001). The primary objectives of this program are the seismic surveillance of active, potentially hazardous, Alaskan volcanoes and the investigation of seismic processes associated with active volcanism. This catalog reflects the status and evolution of the seismic monitoring program, and presents the basic seismic data for the time period January 1, 2000, through December 31, 2001. For an interpretation of these data and previously recorded data, the reader should refer to several recent articles on volcano related seismicity on Alaskan volcanoes in Appendix G. The AVO seismic network was used to monitor twenty-three volcanoes in real time in 2000-2001. These include Mount Wrangell, Mount Spurr, Redoubt Volcano, Iliamna Volcano, Augustine Volcano, Katmai Volcanic Group (Snowy Mountain, Mount Griggs, Mount Katmai, Novarupta, Trident Volcano, Mount Mageik, Mount Martin), Aniakchak Crater, Pavlof Volcano, Mount Dutton, Isanotski Peaks, Shishaldin Volcano, Fisher Caldera, Westdahl Peak, Akutan Peak, Makushin Volcano, Great Sitkin Volcano, and Kanaga Volcano (Figure 1). AVO located 1551 and 1428 earthquakes in 2000 and 2001, respectively, on and around these volcanoes. Highlights of the catalog period (Table 1) include: volcanogenic seismic swarms at Shishaldin Volcano between January and February 2000 and between May and June 2000; an eruption at Mount Cleveland between February and May 2001; episodes of possible tremor at Makushin Volcano starting March 2001 and continuing through 2001, and two earthquake swarms at Great Sitkin Volcano in 2001. This catalog includes: (1) earthquake origin times, hypocenters, and magnitudes with summary statistics describing the earthquake location quality; (2) a description of instruments deployed in the field and their locations; (3) a description of earthquake detection, recording, analysis, and data archival systems; (4) station parameters and velocity models used for earthquake locations; (5) a summary of daily station usage throughout the catalog period; and (6) all HYPOELLIPSE files used to determine the earthquake locations presented in this report.

Alaska↗