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Page 6088, results 152176 - 152200

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Publication Extents

Not all publications have extents, not all extents are completely accurate
The trout fishery in Shenandoah National Park
Robert E. Lennon
1961, Special Scientific Report - Fisheries 395
Populations of brook trout in streams of Shenandoah National Park were reduced drastically early in the past decade by a succession of unusually severe droughts and floods. The drying of stream beds, predation, and scouring were principal factors in the loss of fish. The park was closed to fishing in...
Graphic and algebraic solutions of the discordant lead-uranium age problem
L. R. Stieff, T. W. Stern
1961, Geochimica et Cosmochimica Acta (22) 176-199
Uranium-bearing minerals that give lead-uranium and lead—lead ages that are essentially in agreement, i.e. concordant, generally are considered to have had a relatively simple geologic history and to have been unaltered since their deposition. The concordant ages obtained on such materials are, therefore, assumed to approach closely the actual age...
Records, ages, and growth of the mooneye, Hiodon tergisus, of the Great Lakes
John Van Oosten
1961, Transactions of the American Fisheries Society (90) 170-174
Mooneyes (Hiodon tergisus) are very scarce in the upper three Great Lakes since only four specimens have been received from Lake Michigan, one from Lake Huron, and none from Lake Superior. The published statistics of the mooneyes are erroneous. Those of 1931 of Lake Michigan were perhaps chubs (Coregonus spp.)...
Surface water records of Colorado, 1961
Water Resources Division U.S. Geological Survey
1961, Water Data Report CO-61-1
The surface-water records for the 1961 water year for gaging stations and miscellaneous sites within the State of Colorado 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 Water Resources...
Hydrology of the upper Cheyenne River basin: Part A. Hydrology of stock-water reservoirs in upper Cheyenne River basin; Part B. Sediment sources and drainage-basin characteristics in upper Cheyenne River basin
R. C. Culler, R. F. Hadley, S. A. Schumm
1961, Water Supply Paper 1531
The objective of this investigation was to determine the effect on runoff of the many stock reservoirs in the Cheyenne River basin above Angostura Dam. As a first step it was necessary to determine, within reasonable limits of accuracy, the number of reservoirs in the basin, the storage capacity, the...
Floods in the Skagit River basin, Washington
James E. Stewart, George Lawrence Bodhaine
1961, Water Supply Paper 1527
According to Indian tradition, floods of unusually great magnitude harassed the Skagit River basin about 1815 and 1856. The heights of these floods were not recorded at the time; so they are called historical floods. Since the arrival of white men about 1863, a number of large and damaging floods...
Aqua de Ney, California, a spring of unique chemical character
J. H. Feth, S. M. Rogers, C. E. Roberson
1961, Geochimica et Cosmochimica Acta (22) 75-86
The chemistry of water of Aqua de Ney, a cold spring of unusual character located in Siskiyou County, Calif., has been re-examined as part of a study of the relation of water chemistry to rock environment. The water has a pH of 11·6 and a silica content of 4000 parts...
Palæomagnetism of Hawaiian lava flows
Richard R. Doell, Allan Cox
1961, Nature (192) 645-646
PALÆOMAGNETIC investigations of volcanic rocks extruded in various parts of the world during the past several million years have generally revealed a younger sequence of lava flows magnetized nearly parallel to the field of a theoretical geocentric axial dipole, underlain by a sequence of older flows with exactly the opposite...
Palæomagnetic evidence relevant to a change in the earth's radius
Allan Cox, Richard R. Doell
1961, Nature (189) 45-47
INTEREST in the hypothesis that the Earth's radius has increased during geological history has been renewed in recent years because of several sets of independent observations and interpretations. From studies of the deformation of mountain ranges and the distribution of faults and oceans, Carey1 proposes an increase in the Earth's area...
Radio-tracer techniques for the study of flow in saturated porous materials
H.E. Skibitzke, H. T. Chapman, G.M. Robinson, Richard A. McCullough
1961, International Journal of Applied Radiation and Isotopes (10) 38-42
An experiment was conducted by the U.S. Geological Survey to determine the feasibility of using a radioactive substance as a tracer in the study of microscopic flow in a saturated porous solid. A radioactive tracer was chosen in preference to dye or other chemical in order to eliminate effects of...