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Page 5443, results 136051 - 136075

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Rutile and sphene in blueschist and related high-pressure facies rocks
M.C. Blake, Benjamin A. Morgan
1975, Open-File Report 75-36
Sphene and rutile are characteristic accessory minerals of blueschist facies metamorphic rocks. However, only sphene is present in the lowerr grade blueschist assemblages. In many areas of the world these blueschists pass into, or are in fault contact with, higher grade glaucophane schists, rutile-bearing amphibolites, and eclogites. The origin of...
A geologic analysis of the Side-Looking Airborne Radar imagery of southern New England
Paul T. Banks
1975, Open-File Report 75-207
Analysis of the side looking airborn radar imagery of Massachusetts, Connecticut and Rhode Island indicates that radar shows the topography in great detail. Since bedrock geologic features are frequently expressed in the topography the radar lends itself to geologic interpretation. The radar was studied by comparisons with field mapped geologic...
Audio-magnetotelluric methods in reconnaissance geothermal exploration
Donald B. Hoover, Carl L. Long
1975, Open-File Report 75-362
About three years ago, at the initiation of a major effort by the U.S. Geological Survey into studies of geothermal systems, a decision was made to evaluate the audio-magnetotelluric, AMT, technique for this application. At that time we had had no real experience with the method nor any equipment. Some...
A river-quality assessment of the upper White River, Indiana
William J. Shampine
1975, Water-Resources Investigations Report 75-10
This report attempts to interrelate the physical, chemical, biological, esthetic, and cultural aspects of the upper White River (above Centerton, Ind.) by assessing the mass of available data. Relatively few new data were collected.The White River can be subdivided into five distinct river-quality sections. Section 1, above Winchester, drains a...