Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16759
Description of borehole geophysical and geologist logs, Berks Sand Pit Superfund Site, Longswamp Township, Berks County, Pennsylvania Description of borehole geophysical and geologist logs, Berks Sand Pit Superfund Site, Longswamp Township, Berks County, Pennsylvania
Between October 2002 and January 2003, geophysical logging was conducted in six boreholes at the Berks Sand Pit Superfund Site, Longswamp Township, Berks County, Pa., to determine (1) the waterproducing zones, water-receiving zones, zones of vertical borehole flow, orientation of fractures, and borehole and casing depth; and (2) the hydraulic interconnection between the six boreholes and...
Authors
Dennis J. Low, Randall W. Conger
A summary report of sediment processes in Chesapeake Bay and watershed A summary report of sediment processes in Chesapeake Bay and watershed
The Chesapeake Bay, the Nation's largest estuary, has been degraded because of diminished water quality, loss of habitat, and over-harvesting of living resources. Consequently, the bay was listed as an impaired water body due to excess nutrients and sediment. The Chesapeake Bay Program (CBP), a multi-jurisdictional partnership, completed an agreement called "Chesapeake 2000" that revises...
Sandstone and shale compaction curves derived from sonic and gamma ray logs in offshore wells, North Slope, Alaska– Parameters for basin modeling Sandstone and shale compaction curves derived from sonic and gamma ray logs in offshore wells, North Slope, Alaska– Parameters for basin modeling
Representative compaction curves for the principle lithologies are essential input for reliable models of basin history. Compaction curves influence estimates of maximum burial and erosion. Different compaction curves may produce significantly different thermal histories. Default compaction curves provided by basin modeling packages may or may not be a good proxy for the compaction...
Authors
Elisabeth L. Rowan, Daniel O. Hayba, Philip H. Nelson, W. Matthew Burns, David W. Houseknecht
Geochemistry of bedrock and glacial deposits in the vicinity of the Bend massive sulfide deposit, north central Wisconsin Geochemistry of bedrock and glacial deposits in the vicinity of the Bend massive sulfide deposit, north central Wisconsin
In 1998 the U.S. Geological Survey (USGS) initiated a study to examine the natural regional environmental impact of sulfide mineralization exposed to episodic weathering and glaciation. The study focused on the Bend copper-gold massive sulfide deposit located in the Medford District of the Chequamegon National Forest in north central Wisconsin. The Bend massive sulfide deposit is a small...
Authors
Laurel G. Woodruff, John W. Attig, William F. Cannon, Suzanne W. Nicholson, Klaus Schulz
Geochemical characterization of slags, other mine waste, and their leachate from the Elizabeth and Ely Mines (Vermont), the Ducktown Mining District (Tennessee), and the Clayton Smelter Site (Idaho) Geochemical characterization of slags, other mine waste, and their leachate from the Elizabeth and Ely Mines (Vermont), the Ducktown Mining District (Tennessee), and the Clayton Smelter Site (Idaho)
Waste-rock material produced at historic metal mines contains elevated concentrations of potentially toxic trace elements. Two types of mine waste were examined in this study: sintered waste rock and slag. The samples were collected from the Elizabeth and Ely mines in the Vermont copper belt (Besshi-type massive sulfide deposits), from the Copper Basin mining district near Ducktown...
Authors
Nadine M. Piatak, Robert R. Seal, Jane M. Hammarstrom, Allen L. Meier, Paul H. Briggs
Introduction to physical properties and elasticity models Introduction to physical properties and elasticity models
Estimating the in situ methane hydrate volume from seismic surveys requires knowledge of the rock physics relations between wave speeds and elastic moduli in hydrate/sediment mixtures. The elastic moduli of hydrate/sediment mixtures depend on the elastic properties of the individual sedimentary particles and the manner in which they are arranged. In this chapter, we present some rock...
Authors
Jack Dvorkin, Michael B. Helgerud, William F. Waite, Stephen H. Kirby, Amos Nur
The U.S. Atlantic continental margin: The best-known gas hydrate locality The U.S. Atlantic continental margin: The best-known gas hydrate locality
One of the few attempts to date to map gas hydrate over a large area has been made on the Atlantic continental margin of the United States (Dillon et al., 1993, 1994, 1995). This work has resulted in the production of an extensive data base of seismic reflection lines including both single and multichannel lines, and complete GLORIA sidescan sonar coverage. This work was part of the...
Authors
William P. Dillon, Michael D. Max
Simulation of streamflow and water quality in the White Clay Creek subbasin of the Christina River Basin, Pennsylvania and Delaware, 1994-98 Simulation of streamflow and water quality in the White Clay Creek subbasin of the Christina River Basin, Pennsylvania and Delaware, 1994-98
The Christina River Basin drains 565 square miles (mi2) in Pennsylvania, Maryland, and Delaware. Water from the basin is used for recreation, drinking water supply, and to support aquatic life. The Christina River Basin includes the major subbasins of Brandywine Creek, White Clay Creek, and Red Clay Creek. The White Clay Creek is the second largest of the subbasins and drains an area of...
Authors
Lisa A. Senior, Edward H. Koerkle
Flood of North-Central Indiana, July 2003 Flood of North-Central Indiana, July 2003
No abstract available.
Authors
D.V. Arvin, H.T. Nguyen, L.M. Huff
New digital geologic maps of U.S. continental margins: Insights to seafloor sedimentary character, aggregate resources and processes New digital geologic maps of U.S. continental margins: Insights to seafloor sedimentary character, aggregate resources and processes
No abstract available.
Authors
S. Williams, Clinton N. Jenkins, J. Currence, S. Penland, J. Reid, Jim Flocks, J. Kindinger, L. Poppe, M. Kulp, F. Manheim, M. Hampton, C. Polloni, J. Rowland
The relationship of nearshore sand bar configuration to shoreline change The relationship of nearshore sand bar configuration to shoreline change
No abstract available.
Authors
K. Senthilnathan, T. Lippmann, J. List
Sorted patterns on shallow shelves: Instability and finite-amplitude self-organization Sorted patterns on shallow shelves: Instability and finite-amplitude self-organization
No abstract available.
Authors
A. Murray, E.R. Thieler, B. Tighe