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Measured sections of the Browns Park Formation (Miocene) in Moffat County, Colorado, 1980
Stanley J. Luft, William L. Thoen
1981, Open-File Report 81-171
Eight partial sections of the Browns Park Formation of Miocene age were measured in Moffat County, northwestern Colorado, during the 1980 field season, as part of a study of the stratigraphy and depositional environments of the formation. These newly measured sections are intended to complement other surface sections of the...
Submarine topography and physiography of lower Cook Inlet, Alaska
Arnold H. Bouma
1981, Open-File Report 81-1335
The submarine topography of lower Cook Inlet, Alaska, is complex because the bathymetric aspects and water depths change rapidly over short distances. The folded upper Tertiary subbottom was eroded during the first of five major Quaternary glacial advances over the inlet, and later fluvial, fluvioglacial, glacial, and marine erosional and...
Birds of the St. Croix River valley: Minnesota and Wisconsin
Craig A. Faanes
1981, North American Fauna 73
The St. Croix River Valley encompasses nearly 11,550 km2 in east-central Minnesota and northwestern Wisconsin. A wide range of habitats are available for birds including upland oak, lowland deciduous, maple-basswood, lowland and upland coniferous forests, natural basin wetlands, and grasslands. Situated in the north-central region of the United States, the...
Clay mineralogy of Devonian shales in the Appalachian Basin
John W. Hosterman, Sallie I. Whitlow
1981, Open-File Report 81-585
A study of the clay mineralogy of the Devonian black shales of the Appalachian basin was undertaken to help predict areas for potential gas resources. More than 2,100 samples from 84 drill holes representing 11 shale units were analyzed for clay mineralogy or whole—rock mineralogy or both. Approximately 1,300 samples...
Water-resources investigations of the USGS in Texas, fiscal year 1981
Alicia A. Mitchell, H.D. Buckner
1981, Open-File Report 81-347
Water-resources investigations in Texas consist of the collection of basic records through the hydrologic-data network, interpretive studies, and research projects. The hydrologic records and the results of investigations are published by the Geological Survey or by cooperating agencies. This report describes the water-resources projects and activities of the Geological Survey...
Background hydrologic information in potential lignite mining areas in Mississippi, August 1980
J. K. Arthur
1981, Open-File Report 81-421
The U.S. Geological Survey in cooperation with Mississippi Bureau of Geology is conducting a hydrologic data-collection program in the potential lignite-producing areas in Mississippi. During the week of August 25-28, 1980, hydrologic data on channel characteristics were collected at 15 sites on small streams draining potential lignite mining areas in...
The Accotink Schist, Lake Barcroft Metasandstone, and Popes Head Formation— Keys to an understanding of the tectonic evolution of the northern Virginia Piedmont
Avery Ala Drake, Peter T. Lyttle
1981, Professional Paper 1205
The newly named Accotink Schist and Lake Barcroft Metasandstone of the Eastern Fairfax sequence are the structurally lowest metamorphic rocks in the northernmost Piedmont of Virginia. The Accotink consists of beds of pelitic schist that have thin basal intervals containing graded, very fine grained metasiltstone, as well as interbeds of...
Ground-water hydrology of strip-mine areas in eastern Ohio (conditions during mining of two watersheds in Coshocton and Muskingum counties)
John O. Helgesen, Allan C. Razem
1981, Open-File Report 81-913
Ground-water conditions during coal strip mining in two small watersheds are described as part of an ongoing study of effects of mining on hydrologic systems. Both watersheds were underlain by stratified sedimentary rocks containing two perched aquifers above clay beds which underlaid the major coal seams. Mining involved removing the...
Assessment of water quality in streams draining coal-producing areas in Ohio
C.L. Pfaff, D.R. Helsel, D.P. Johnson, C.G. Angelo
1981, Open-File Report 81-409
Quality of water in 150 sites in the coal-producing areas of eastern Ohio was studied in a two-phase investigation between May 1975 and August 1976. Results of phase one, a reconnaissance to determine the occurrence of certain inorganic and organic constituents and to relate their occurrence to coal mining, indicated...
Hydrologic data of the Shawsheen River basin, Massachusetts
Frederick B. Gay, David F. Delaney
1981, Open-File Report 81-802
The Shawsheen River basin drains a 77-square-mile area northwest of metropolitan Boston in eastern Massachusetts and discharges into the Merrimack River. Principal tributaries to the Shawsheen River are: Content, Elm, Heath, Hussey, Kiln, Rogers, Spring, Strong Water, Vine, and Webb Brooks....
Data file: the 1976 Atlantic Margin Coring (AMCOR) Project of the U.S. Geological Survey
Lawrence J. Poppe
Lawrence J. Poppe, editor(s)
1981, Open-File Report 81-239
In 1976, the U.S. Geological Survey conducted the Atlantic Margin Coring Project (AMCOR) to obtain information on stratigraphy, hydrology and water chemistry, mineral resources other than petroleum hydrocarbons, and geotechnical engineering properties at sites widely distributed along the Continental Shelf and Slope of the Eastern United States (Hathaway and others,...
Samples from the United States eastern continental margin collected by the U.S. Geological Survey
Wayne M. Ferrebee, Donald K. McElroy
1981, Open-File Report 81-467
As part of the National Geophysical and Solar-Terrestrial Data Center's (NGSDC's) project to maintain a computer-accessed list of marine geological samples, the U.S. Geological Survey has inventoried 3,949 samples from the continental margin of the Eastern United States (Fig. 1). Most (3,868) of these samples are grab and dredge samples...
Geology and potential hazards of the continental slope between Lindenkohl and South Toms Canyons, offshore mid-Atlantic United States
James M. Robb, John C. Hampson Jr., John R. Kirby, David C. Twichell
1981, Open-File Report 81-600
Because sediment instability, or slumping, has been identified as a potential hazard to petroleum development of the east-coast Continental Slope, the U.S. Geological Survey, in cooperation with the U.S. Bureau of Land Management, began a detailed study of a segment of the Continental Slope between Lindenkohl and South Toms Canyons...
Geohydrology of the Vamoosa-Ada aquifer, east-central Oklahoma
Joseph J. D’Lugosz, Roger G. McClaflin, Melvin V. Marcher
1981, Open-File Report 81-62
The Vamoosa-Ada aquifer, which underlies an area of about 2,320 square miles, consists principally of the Vamoosa Formation and the overlying Ada Group of Pennsylvanian age. Rocks comprising the aquifer were deposited in a near-shore environment ranging from marine on the west to nonmarine to the east. Because of changes...
Hydrologic data of the lower Merrimack River basin, Massachusetts, from Concord River, Lowell, to Plum Island, Newburyport
David F. Delaney, Frederick B. Gay
1981, Open-File Report 81-1185
The lower Merrimack River basin study area drains approximately 180 square miles along the New Hampshire border in northeastern Massachusetts. This area includes parts of the Merrimack River basin within Massachusetts east of the Beaver Brook and Concord River basins, except for the Shawsheen River basin. Even though the Blackwater...
Gulf of Alaska and Lower Cook Inlet summary report 2, June 1981: A revision of Outer Continental Shelf oil and gas activities in the Gulf of Alaska (including Lower Cook Inlet) and their onshore impacts: A summary report, September 1980
Karen M. Collins, Anne Stadnychenko
1981, Open-File Report 81-607
The search for oil and gas on the Outer Continental Shelf (OCS) in the Gulf of Alaska subregion of the Alaska leasing Region began in 1967, when geophysical surveys of the area were initiated. Three lease sales have been held in the subregion. Lease Sale 39, for the northern Gulf...