Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16922
Ground-water quality in northeastern St. Joseph County, Indiana Ground-water quality in northeastern St. Joseph County, Indiana
This report describes the ground-water quality of a 220-square-mile area in northeastern St. Joseph County, Indiana. Ground-water samples were collected from 30 monitoring wells at 20 sites during May 1992; the wells were screened in either a shallow or a deep sand and gravel aquifer. Samples were analyzed for general water-quality properties, nutrients, major ions, trace elements...
Authors
J.M. Fenelon, E. Randall Bayless, Lee R. Watson
Preliminary analysis of integrated stratigraphic data from the Phred #1 corehole, Indian River County, Florida Preliminary analysis of integrated stratigraphic data from the Phred #1 corehole, Indian River County, Florida
No abstract available.
Authors
S.D. Weedman, T.M. Scott, Lucy E. Edwards, G. L. Brewster-Wingard, J.C. Libarkin
Water levels in the Calumet aquifer and their relation to surface-water levels in northern Lake County, Indiana, 1985-92 Water levels in the Calumet aquifer and their relation to surface-water levels in northern Lake County, Indiana, 1985-92
The U.S. Geological Survey made 2,328 water-level measurements at a total of 96 ground-water and surface-water sites in northern Lake County, Indiana, from August 1985 through September 1992. This report lists and summarizes the significance of the measurements. Northern Lake County is on the southern shore of Lake Michigan and includes the cities of East Chicago, Gary, Hammond, and...
Authors
Theodore K. Greeman
Characteristics, transport, and yield of sediment in Juday Creek, St. Joseph County, Indiana, 1993-94 Characteristics, transport, and yield of sediment in Juday Creek, St. Joseph County, Indiana, 1993-94
Juday Creek is a tributary of the St. Joseph River in St. Joseph County, north-central Indiana. The creek has been identified as one of the few streams in the State that can support a naturally reproducing brown trout population. A recent study of benthic invertebrates shows a decline in the production rate of insect species and suggests that this decline may be caused by increased...
Authors
K. K. Fowler, J.T. Wilson
Directions of ground-water flow in the Lost River watershed near Orleans, Indiana Directions of ground-water flow in the Lost River watershed near Orleans, Indiana
No abstract available.
Authors
E. Randall Bayless, C.J. Taylor, M.S. Hopkins, D.V. Arvin
Occurrence of pesticides in the White River, Indiana, 1991-95 Occurrence of pesticides in the White River, Indiana, 1991-95
Pesticides (herbicides and insecticides) are used extensively in the White River Basin. Application of herbicides to corn and soybeans accounts for most of the use. The pesticides most frequently detected near the mouth of the White River during 1991-95 were the herbicides alachlor, atrazine, cyanazine, and metolachlor. The highest concentrations of herbicides in the river were typically...
Authors
Charles G. Crawford
Geologic, geochemical, and isotopic studies of a carbonate- and siliciclastic-hosted Pb-Zn deposit at Lion Hill, Vermont Geologic, geochemical, and isotopic studies of a carbonate- and siliciclastic-hosted Pb-Zn deposit at Lion Hill, Vermont
Zn-, Pb-, Cu-, and Fe-bearing rocks of the Lion Hill area in western Vermont formed during the Early Cambrian by syngenetic sedimentary-exhalative and diagenetic replacement processes. Sphalerite, galena, chalcopyrite, pyrite, and, locally, magnetite form stratabound and broadly stratiform lenticular zones, -300 meters long and 25-50 meters thick, which are uneconomic at the present time...
Authors
Nora K. Foley, Sandra H. B. Clark, Laurel G. Woodruff, Elwin L. Mosier
Surficial aquifer system of the New Jersey Coastal Plain: Significance to resource management Surficial aquifer system of the New Jersey Coastal Plain: Significance to resource management
An understanding of the interaction between human activities and the Nation's surficial (water-table) aquifers is critical to maintaining the quantity and quality of our water resources and the health of the ecosystems they support. In recognition of the importance of these aquifers, the U.S. Geological Survey (USGS) is developing a program to study the surficial aquifers of the New...
Authors
Herbert T. Buxton
Aquatic Ecology: Scale, Pattern and Process Aquatic Ecology: Scale, Pattern and Process
No abstract available.
Authors
Matthew C. Perry
Silver and other tracers of sewage particles in coastal and deep sea sediments off the east coast, USA Silver and other tracers of sewage particles in coastal and deep sea sediments off the east coast, USA
No abstract available.
Authors
Michael H. Bothner, Marilyn R. Buchholtz ten Brink, G.E. Ravizza
The impacts of mobile fishing gear on low topography benthic habitats in the Gulf of Maine (Northwest Atlantic): A preliminary report The impacts of mobile fishing gear on low topography benthic habitats in the Gulf of Maine (Northwest Atlantic): A preliminary report
No abstract available.
Authors
Peter J. Auster, Richard J. Malatesta, Richard W. Langton, Les Watling, Andrew N. Shepard, Ivar G. Babb
Pulling the rug out from under California: Seismic images of the Mendocino Triple Junction region Pulling the rug out from under California: Seismic images of the Mendocino Triple Junction region
The active tectonic regime of northwestern California changes abruptly from transform motion to subduction at the Mendocino Triple Junction. Northward migration of the triple junction has been a major factor in the tectonic history of the continental margin of California since the Oligocene and continues at present. Understanding the effects of triple junction migration on the structure...
Authors
Anne M. Trehu