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Page 6274, results 156826 - 156850

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Publication Extents

Not all publications have extents, not all extents are completely accurate
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,...
The copper and uranium deposits of the Coyote district, Mora County, New Mexico
C.M. Tschanz, D.C. Laub, G.W. Fuller
1954, Trace Elements Investigations 356
The copper and uranium-vanadium deposits of the Coyote district, Mora County, N. Mec, are confined to the lower 2,000 feet of the Sangre de Gristo formation of Pennsylvanian and Permian age. A narrow belt of deposits in steeply dipping or overturned rocks extends for 7 miles along Coyote Creek south...
Monazite in Atlantic shore-line features
Lincoln Dryden, Glen A. Miller
1954, Trace Elements Investigations 407
This report is a survey of present and potential production of monazite from part of the Maryland-Florida section of the Atlantic Coastal Plain. The part of the Coastal Plain covered here is the outer (shore-ward) half. In this area, all the large heavy-mineral placers so far discovered occur in sand bodies...
Geology of the Uravan quadrangle, Montrose county, Colorado
Fred W. Cater Jr., A.P. Butler Jr., E. J. McKay, Robert L. Boardman
1954, Trace Elements Memorandum 707
The Uravan quadrangle is one of eighteen 7 1/2-minute quadrangles covering the principal carnotite-producing area of the southwestern Colorado. The geology of these quadrangles was mapped by the U.S. Geological Survey for the Atomic Energy Commission as part of a comprehensive study of carnotite deposits. The rocks exposed in...
U.S. Geological Survey Trace Elements and related reports through 1953
Jane H. Wallace, Virginia K. Blatcher, Harriet B. Smith
1954, Trace Elements Investigations 400
This report combines and brings up-to-date the information previously given in Trace Elements Investigations Report 325, "Numerical list of U.S. Geological Survey Trace Elements Reports to April 30, 1953," and Trace Elements Investigations Report 301, "Topical index and bibliography of U.S. Geological Survey Trace Elements and related reports." Part I is...