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Page 4933, results 123301 - 123325

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Quantitative analysis of saltwater-freshwater relationships in groundwater systems-A historical perspective
T. E. Reilly, A.S. Goodman
1985, Journal of Hydrology (80) 125-160
Although much progress has been made toward the mathematical description of saltwater-freshwater relationships in groundwater systems since the late 19th century, the advective and dispersive mechanisms involved are still incompletely understood. This article documents the major historical advances in this subject and summarizes the major direction of current studies. From...
Hydraulic gradient control for groundwater contaminant removal
Atwood D. Fisher, S.M. Gorelick
1985, Journal of Hydrology (76) 85-106
The Rocky Mountain Arsenal near Denver, Colorado, U.S.A., is used as a realistic setting for a hypothetical test of a procedure that plans the hydraulic stabilization and removal of a groundwater contaminant plume. A two-stage planning procedure successfully selects the best wells and their optimal pumping/recharge schedules to contain the...
Quaternary sedimentation of the Alaskan Beaufort shelf: Influence of regional tectonics, fluctuating sea levels, and glacial sediment sources
David A. Dinter
1985, Tectonophysics (114) 133-161
The offshore stratigraphy of the Quaternary Gubik Formation of Arctic Alaska has been studied on high-resolution seismic profiles with a maximum sub-seafloor penetration of about 100 m. In general, marine transgressive subunits of the Gubik Formation are wedge-shaped on the shelf, thickening slightly seaward to the shelf break, beyond which...
Determination of gold, indium, tellurium and thallium in the same sample digest of geological materials by atomic-absorption spectroscopy and two-step solvent extraction
A.E. Hubert, T. T. Chao
1985, Talanta (32) 568-570
A rock, soil, or stream-sediment sample is decomposed with hydrofluoric acid, aqua regia, and hydrobromic acid-bromine solution. Gold, thallium, indium and tellurium are separated and concentrated from the sample digest by a two-step MIBK extraction at two concentrations of hydrobromic add. Gold and thallium are first extracted from 0.1M hydrobromic acid medium,...
A method for the determination of vanadium and iron oxidation states in naturally occurring oxides and silicates
R. B. Wanty, M. B. Goldhaber
1985, Talanta (32) 395-398
A valence-specific analytical method for determining V3+ in ore minerals has been developed that involves two steps: dissolution of a mineral sample without disturbing the V3+/Vtot ratio, followed by determination of V3+ in the presence of V4+. The samples are dissolved in a mixture of hydrofluoric and sulphuric acids at 100° in Teflon-lined...
Post-Eruption Changes in Channel Geometry of Streams in the Toutle River Drainage Basin, 1980-82, Mount St. Helens, Washington
D. F. Meyer, K. Michael Nolan, J.E. Dodge
1985, Open-File Report 85-412
The May 18, 1980, eruption of Mount St. Helens, Washington, generated a debris avalanche, lateral blast, lahars, and tephra deposits that altered mainstem and tributary channels within the Toutle River drainage basin. Channel cross sections were monumented and surveyed on North Fork Toutle River and its tributaries, on South Fork...
Water resources data, Michigan, water year 1984
John B. Miller, John L. Oberg, Theodore Sieger Jr.
1985, Water Data Report MI-84-1
Water resources data for the 1984 water year for Michigan consist of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and water levels and water temperature of ground water. This report contains discharge records for 142 gaging stations; stage only...
Proceedings of workshop XXVIII on the Borah Peak, Idaho earthquake
Ross S. Stein, Robert C. Bucknam, editor(s)
1985, Open-File Report 85-290-A
A large earthquake leaves clues of its nature that can be interpreted only by a diverse group of scientists. We cannot hope to form a coherent picture of the Borah Peak shock, a rare Great Basin event, without listening to each other and reflecting on the historical and geological record...
Maps showing distribution of copper in heavy-mineral concentrates, Richfield 1° x 2° quadrangle, Utah
William R. Miller, Jerry M. Motooka, John B. McHugh
1985, Miscellaneous Field Studies Map 1246-F
These maps are part of a folio of maps of the Richfield 1° x 2 ° quadrangle, Utah, prepared under the Conterminuous United States Mineral Assessment Program. Other publications in this folio are listed in the selected references.Located in west-central Utah, the Richfield quadrangle covers the eastern part of the...
Maps showing distribution of lead in heavy-mineral concentrates, Richfield 1° x 2° quadrangle, Utah
William R. Miller, Jerry M. Motooka, John B. McHugh
1985, Miscellaneous Field Studies Map 1246-G
These maps are part of a folio of maps of the Richfield 1° x 2 ° quadrangle, Utah, prepared under the Conterminuous United States Mineral Assessment Program. Other publications in this folio are listed in the selected references.Located in west-central Utah, the Richfield quadrangle covers the eastern part of the...
Maps showing distribution of tungsten in heavy-mineral concentrates, Richfield 1° x 2° quadrangle, Utah
William R. Miller, Jerry M. Motooka, John B. McHugh
1985, Miscellaneous Field Studies Map 1246-J
These maps are part of a folio of maps of the Richfield 1° x 2 ° quadrangle, Utah, prepared under the Conterminuous United States Mineral Assessment Program. Other publications in this folio are listed in the selected references.Located in west-central Utah, the Richfield quadrangle covers the eastern part of the...
Maps showing distribution of thorium in heavy-mineral concentrates, Richfield 1° x 2° quadrangle, Utah
William R. Miller, Jerry M. Motooka, John B. McHugh
1985, Miscellaneous Field Studies Map 1246-H
These maps are part of a folio of maps of the Richfield 1° x 2 ° quadrangle, Utah, prepared under the Conterminuous United States Mineral Assessment Program. Other publications in this folio are listed in the selected references.Located in west-central Utah, the Richfield quadrangle covers the eastern part of the...
Maps showing distribution of tin in heavy-mineral concentrates, Richfield 1° x 2° quadrangle, Utah
William R. Miller, Jerry M. Motooka, John B. McHugh
1985, Miscellaneous Field Studies Map 1246-I
These maps are part of a folio of maps of the Richfield 1° x 2 ° quadrangle, Utah, prepared under the Conterminuous United States Mineral Assessment Program. Other publications in this folio are listed in the selected references.Located in west-central Utah, the Richfield quadrangle covers the eastern part of the...
Base-flow characteristics of segments of the Piney River, and East and West Piney Rivers, Dickson and Hickman Counties, Tennessee
V.J. May
1985, Open-File Report 85-155
Base-flow profiles based on discharge measurements made during a seepage investigation on August 28, 1984, define losing and gaining reaches of segments of the Piney River, and East and West Piney Rivers, Dickson and Hickman Counties, central Tennessee. A similar profile defines losing and gaining reaches for the average 3-day...