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Page 2560, results 63976 - 64000

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Relation of temperature distribution to ground-water movement in carbonate rocks of central Israel
Robert Schneider
1964, Geological Society of America Bulletin (75) 209-216
The Cenomanian-Turonian formations of central Israel constitute a highly permeable dolomite and limestone aquifer. In this area it is on the west limb of an anticlinorium that trends north-northeast, and it contains water under artesian pressure. A graph of water temperatures and well depths suggests that there is a very small vertical temperature gradient in local segments of the aquifer. The small gradient...
Sedimentology: general introduction and definitions : fluvial sediment and channel morphology
Roger G. Wolff, Paul C. Benedict
1964, Report
Sedimentology, the study of sedimentary rocks and the processes by which they are formed, includes and is related to a large number of phenomena. Sedimentology includes the five fundamental processes defined by the term sediaentation --weathering, erosion, transportation, deposition and diagenesis. Sedimentology shares with geomorphology the study of the surface...
Hydrologic factors pertinent to ground‐water contamination
R. Brown
1964, Groundwater (2) 5-12
Predictions of where and how a fluid waste may travel from disposal site to the water table require detailed information on the physical characteristics, location, and extent of all pervious and impervious materials in the unsaturated zone. Principles concerning the flow system in the unsaturated zone indicate the importance of choice of...
Hydrologic factors pertinent to ground‐water contamination
R. Brown
1964, Groundwater (2) 5-12
Predictions of where and how a fluid waste may travel from disposal site to the water table require detailed information on the physical characteristics, location, and extent of all pervious and impervious materials in the unsaturated zone. Principles concerning the flow system in the unsaturated zone indicate the importance of choice of...
Surface water records of California, 1964; Volume 2: Northern Great Basin and Central Valley
Water Resources Division, U.S. Geological Survey
1964, Water Data Report CA-64-2
The surface-water records for the 1964 water year for gaging stations, partial-record stations, and miscellaneous sites within the State of California are given in this report. For convenience there are also included records for a few pertinent gaging stations in bordering States. The records were collected and computed by the...
Ground water in North America
Harold E. Thomas, Luna Bergere Leopold
1964, Science (143) 1001-1006
The fast-growing demands on this natural resource expose a need to resolve many hydrologic unknowns....
Spectrophotometric determination of fluorine in silicate rocks
L. C. Peck, V. C. Smith
1964, Talanta (11) 1343-1347
The rock powder is sintered with a sodium carbonate flux containing zinc oxide and magnesium carbonate, the sinter-cake leached with water and the resulting solution filtered. Fluorine is separated from the acidified filtrate by steam distillation and determined spectrophotometrically by means of a zirconium-SPADNS reagent. If...
Apparatus for continuous extraction of nonpolar compounds from water applied to determination of chlorinated pesticides and intermediates
L. Kahn, C. H. Wayman
1964, Analytical Chemistry (36) 1340-1343
A continuous, multichamber liquid-liquid extractor, with internal solvent recycle, for the extraction of nonpolar contaminants from natural waters is described. The multichamber arrangement makes it possible to judge the completeness of extraction of a given component from the aqueous stream. Recoveries as high as 100% are obtained by applying the...
Minor-element composition and organic carbon content of marine and nonmarine shales of Late Cretaceous age in the western interior of the United States
H. A. Tourtelot
1964, Geochimica et Cosmochimica Acta (28) 1579-1604
The composition of nonmarine shales of Cretaceous age that contain less than 1 per cent organic carbon is assumed to represent the inherited minor-element composition of clayey sediments delivered to the Cretaceous sea that occupied the western interior region of North America. Differences in minor-element content between these samples and...
Catalytic determination of vanadium in water
M. J. Fishman, M. W. Skougstad
1964, Analytical Chemistry (36) 1643-1646
A kinetic determination of V(V) as a catalyst was spectrophotometrically performed by using the indicator reaction of Gallamine blue (GB+) and bromate at pH 2.0. The reaction was followed by measuring absorbance change for a fixed-time of 3 min at 537 nm. The variables such as reagent...