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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.
Filter Total Items: 6197
Methods of characterizing fluid movement and chemical transport in fractured rock Methods of characterizing fluid movement and chemical transport in fractured rock
No abstract available.
Authors
Paul A. Hsieh, Allen M. Shapiro, C.C. Barton, F.P. Haeni, C. D. Johnson, C. Martin, F.L. Paillet, T. C. Winter, D.L. Wright
Chronostratigraphic assignment of volcanopelagic strata above the Coast Range Ophiolite Chronostratigraphic assignment of volcanopelagic strata above the Coast Range Ophiolite
No abstract available
Authors
D.M. Hull, E.A. Pessagno, C.D. Blome, C.A. Hopson, I.M. Munoz
Northward displacements of forearc slivers in the Coast Ranges of California and Southwest Oregon during the late Mesozoic and early Cenozoic Northward displacements of forearc slivers in the Coast Ranges of California and Southwest Oregon during the late Mesozoic and early Cenozoic
North American-Farallon-Kula plate motion data, combined with estimated strikeslip displacements obtained from the obliquity of convergence along active circumPacific subduction zones, can be used to estimate the amount of strike-slip displacement along the forearc region of western North America. This evidence suggests a minumum of 500 km and maximum of 1600 km displacement with respect...
Authors
A. S. Jayko, M.C. Blake
U-Pb Zircon Geochronology of the Emigrant Gap Composite Pluton, Northern Sierra Nevada, California: Implications for the Nevadan Orogeny U-Pb Zircon Geochronology of the Emigrant Gap Composite Pluton, Northern Sierra Nevada, California: Implications for the Nevadan Orogeny
The undeformed Emigrant Gap composite pluton postdates the Lower to Middle Jurassic Sailor Canyon and Middle Jurassic Tuttle Lake Formations. According to earlier workers, these latter formations contain main and late phase Nevadan-aged (155 +/-3 Ma) spaced, slaty, phyllitic, and crenulation cleavage. Recently discovered fossils indicate that the upper part of the Sailor Canyon Formation...
Authors
G. H. Girty, S. Yoshinobu, M.D. Wracher, M.S. Girty, K.A. Bryan, J.E. Skinner, B.A. McNulty, K.A. Bracchi, D. S. Harwood, R.E. Hanson
Mesozoic geology of Mt. Jura, northern Sierra Nevada, California; a progress report. Mesozoic geology of Mt. Jura, northern Sierra Nevada, California; a progress report.
No abstract available
Authors
D.S. Hardwood
Hydrologic budget and nitrogen distribution for an agricultural study plot in claypan soil and glacial till near Centralia, Mo.--May 1991 to May 1992 Hydrologic budget and nitrogen distribution for an agricultural study plot in claypan soil and glacial till near Centralia, Mo.--May 1991 to May 1992
No abstract available.
Authors
Brian P. Kelly, L.N. Plummer
Options for water-level control in developed wetlands Options for water-level control in developed wetlands
Wetland habitats in the United States currently are lost at a rate of 260,000 acres/year (105,218 ha/year). Consequently, water birds concentrate in fewer and smaller areas. Such concentrations may deplete food supplies and influence behavior, physiology, and survival. Continued losses increase the importance of sound management of the remaining wetlands because water birds depend on...
Authors
J. R. Kelley, M. K. Laubhan, F. A. Reid, J. S. Wortham, L. H. Fredrickson
American white pelican (Pelecanus erythrorhynchos) American white pelican (Pelecanus erythrorhynchos)
No abstract available.
Authors
R. M. Evans, F. L. Knopf
Legal considerations in inland fisheries management Legal considerations in inland fisheries management
No abstract available.
Authors
B. L. Lamb, B. A. K. Coughlan
Postproject analyses of fish and wildlife mitigation Postproject analyses of fish and wildlife mitigation
No abstract available.
Authors
J. E. Roelle, K. M. Manci