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Page 6266, results 156626 - 156650

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Ground-water field trip, Tucson to Nogales, Arizona
D.R. Coates, L.C. Halpenny
1954, Open-File Report 54-52
A field excursion following the route described herein was conducted as a part of the curriculum of the 6th Ground Water Short Course, which was held by the Geological Survey at the University of Arizona in April 1954. The route log and descriptive text were designed to provide a general...
Symposium on land erosion: Introduction
H.V. Peterson
1954, Eos, Transactions, American Geophysical Union (35) 243-244
One of the very obvious geologic phenomena that is continuously in operation throughout the Earth's land surface is erosion, the process of wearing away the soil or the surface mantle. The falling of rain drops on an unprotected slope, the flow of water across land or in a channel, the borings of a rodent, the...
A new sphenopsid cone from Iowa
S.H. Mamay
1954, Annals of Botany (18) 229-239
A new Pennsylvanian cone genus (Litostrobus iowensis, n. gen., n. sp.), apparently of sphenophyllalean affinity, is described on the basis of a coal-ball specimen from the Urbandale Mine, Urbandale, Iowa. The cone is small and extremely simple in organization. It consists of superposed whorls of twelve bracts each. The bases of the bracts are fused to form shallow cuplike...
Marsh and aquatic weed problems in wildlife habitat
A. C. Martin
1954, Weeds (3) 139-142
To most people, the word weeds signifies pest plants of the farm, roadside, or other upland areas. However, weeds also occur on, under, or near water. Fifteen million dollars have been spent on a single aquatic nuisance in the South—the prolific water-hyacinth which clogs navigable streams and lakes with its growth....
Chatanooga shale investigations along the Sequatchie anticline of Tennessee and Alabama
Lynn Glover
1954, Trace Elements Investigations 470
In 1953 the Chattanooga shale in the Sequatchie anticline was tested for its uranium content by seven diamond drill cores. Concurrent with the drilling, geologic field work was done to determine the distribution, thickness, and structural setting of the shale. The results of this investigation indicate that the Chattanooga...
Wet Mountains, Colorado, thorium investigations, 1952-1954
Robert Adam Christman, M. R. Brock, R. C. Pearson, Q. D. Singewald
1954, Trace Elements Investigations 354
A 22-square mile tract (McKinley Mountain Area) of pre-Cambrian rocks and veins containing thorium was mapped at the scale of 1:6,000. This tract lies on the west flank of the Wet Mountains, Custer and Fremont Counties, northeast of Westcliffe, Colo. The bedrock is a complexly interlayered sequence of gneisses of metasedimetary...
Appraisal of the accuracy of U.S. Geological Survey ore reserve estimates for uranium-vanadium deposits on the Colorado Plateau
Alfred Lerner Bush, Harold Keith Stager
1954, Trace Elements Investigations 288
The U.S. Geological Survey has made estimates of the reserves of uranium and vanadium in the carnotite deposits explored by Geological Survey drilling on the Colorado Plateau. This report presents an appraisal of the accuracy of the reserve estimates for deposits in the Uravan mineral belt, the causes of inaccuracy,...