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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse more than 5,500 book chapters authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
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Formation resistivity as an indicator of the onset of oil generation in the Woodford Shale, Anadarko Basin, Oklahoma
The Upper Devonian and Lower Mississippian Woodford Shale is a black, organic-rich shale that is a major hydrocarbon source rock in the Anadarko basin. With the onset of oil generation, nonconductive hydrocarbons begin to replace conductive pore water in the Woodford, and formation resistivity increases. Crossplots of formation resistivity versus either vitrinite reflectance (RO) or Lopatin's time
Authors
James W. Schmoker, Timothy C. Hester
Geochemistry of oils and hydrocarbon source rocks, greater Anadarko Basin: evidence for multiple sources of oils and long-distance oil migration
Organic geochemical analyses of 104 crude oils and 190 core samples of dark-colored shales from the greater Anadarko basin show three major oil types which generally correlate with reservoir age and source-rock age. Analyses include C3-C30 whole-oil gas chromatography, C10+ saturated-hydrocarbon-fraction gas chromatography, and carbon stable isotopes (ppt relative to PDB) of saturated (sat) and ar
Authors
R. C. Burruss, J. R. Hatch
Geology of the Shortland basin region, central Solomons trough, Solomon Islands: review and new findings
No abstract available.
Authors
Terry R. Bruns, John G. Vedder, Alan K. Cooper
Habitat requirements and management of woodcock in the northeast: Assessment of knowledge and needs
No abstract available.
Authors
G.F. Sepik, D.G. McAuley, J. R. Longcore, E.L. Derleth
Horizontal stresses from well-bore breakouts and lithologies associated with their formation, Oklahoma and Texas Panhandle
Orientations of crustal stresses are inferred from stress-induced well-bore breakouts in three areas in the south-central United States: the eastern part of the Anadarko basin in central Oklahoma, the Marietta basin in south-central Oklahoma, and the Bravo dome area of the central Texas Panhandle. Inferred directions of maximum horizontal principal stress (SHmax) are ENE for the eastern Anadarko b
Authors
Richard L. Dart
How to obtain information on nongame migratory birds: Patuxent Wildlife Research Center
No abstract available.
Authors
M.A. Howe, R.M. Erwin, M.R. Fuller, C.E. Keller, C.S. Robbins
Hydrologic studies of wetlands in the northern prairie
No abstract available.
Authors
Thomas C. Winter
Immunostimulation by levamisole in rainbow trout (Salmo gairdneri) in vivo
No abstract available at this time
Authors
D. P. Anderson, A.K. Siwicki, O. W. Dixon, E. F. Lizzio
In vitro assays for chemicals and drugs causing immunomodulation in fish
No abstract available at this time
Authors
D. P. Anderson, O. W. Dixon, A.K. Siwicki
Inventory and management of trespass recreation use at Upper Delaware and Scenic and Recreational River
Recreational trespass on private lands within the Upper Delaware Scenic and Recreational River, located along the eastern border between Pennsylvania and New York, prompted this survey of recreational trespass sites. The National Park Service has been mandated to manage river recreational use within its boundaries but land ownership shall remain predominantly private. This survey was conducted t
Authors
J. L. Marion
Isolation of a reovirus from coho salmon (Oncorhynchus kisutch) in Oregon, USA
Reoviruses isolated from aquatic animals share certain common characteristics: (1) a typical reovirus-like morphology which shows an icosahedral particle with a double capsid that is approximately 75 nm in diameter; (2) a genome with eleven segments of double-stranded RNA (dsRNA) distributed as three large, three medium and five small segments with a total molecular weight of approximately 15 x 10
Authors
J. R. Winton, C.N. Arakawa, C.N. Lannan, J. L. Fryer
Kirtland's warblers on their wintering grounds in the Bahama archipelago--a preliminary report
No abstract available.
Authors
P.W. Sykes