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Page 6271, results 156751 - 156775

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Surface adsorption of Cs137 ions on quartz crystals
Stephen Antkiw, H. Waesche, F. Senftle
1954, Trace Elements Memorandum 862
Adsorption tests were made on four large synthetic and three natural quartz crystals to see if surface defects might be detected by subsequent autoradiography techniques. The adsorbent used was radioactive Cs137 in a solution of Cs 137Cl. Natural quartz crystals adsorbed more cesium than the synthetic crystals. Certain surface defects...
Current velocities in Sagadahoc Bay, Maine
C. E. Knox, W. H. Bradley
1954, Open-File Report 54-149
During the summer of 1953 continuous velocities were obtained through a tidal cycle at each of the 17 stations indicated on the accompanying map. Tidal cycle as used in this report applies to the interval of 4 to 6 hours when the tidal flat at a given station is submerged....
Localization of uranium minerals in channel sediments at the base of the Shinarump conglomerate, Monument Valley, Arizona
I. J. Witkind
1954, Trace Elements Investigations 340
During the summers of 1951 and 1952 the U.S. Geological Survey mapped the geology and uranium deposits in three 15-minute quadrangles on the Navajo Indian Reservation in Apache and Navajo Counties, northeastern Arizona. Exposed sedimentary rocks range in age from the Halgaito tongue of the Cutler formation (Permian) to the Salt Wash...
Thorium and rare earth minerals in the Powderhorn district, Gunnison County, Colorado
Jerry C. Olson, Stewart R. Wallace
1954, Trace Elements Investigations 353
Thorium has been found since 1949 in at least 33 deposits in an area 6 miles wide and 20 miles long in the Powderhorn district, Gunnison County, Colo. The district is composed largely of pre-Jurassic metamorphic and igneous rocks, which are chiefly if not entirely pre-Cambrian in age. The metamorphic...
The quality and character of Pacific Northwest waters
Herbert A. Swenson
1954, Report
This paper is a general discussion of the quality and chemical character of surface and ground waters in the Pacific Northwest as shown by the available data. Previous quality of water studies reported in the literature are reviewed. The composition of natural waters is considered as to the source and...
Germanium and uranium in coalified wood from Upper Devonian black shale
Irving A. Breger, James M. Schopf
1954, Trace Elements Investigations 496
Microscopic study of black, vitreous, carbonaceous material occurring in the Chattanooga shale in Tennessee and in the Cleveland member of the Ohio shale in Ohio has revealed coalified woody plant tissue. Some samples have shown sufficient detail to be identified with the genus Callixylon. Similar material has been reported in...
Radioactive deposits in California
George W. Walker, Tom G. Lovering
1954, Trace Elements Investigations 229
Reconnaissance examination by Government geologists of many areas, mine properties, and prospects in California during the period between 1948 and 1953 has confirmed the presence of radioactive materials in place at more than 40 localities. Abnormal radioactivity at these localities is due to concentrations of primary and secondary uranium minerals,...
Criteria for the mode of emplacement of the alkaline stock at Mount Monadnock, Vermont
Randolph W. Chapman
1954, Geological Society of America Bulletin (65) 97-114
The alkaline stock at Mount Monadnock, Vermont, described briefly by Wolff (1929), has been restudied in detail. Its petrography and structure are discussed here and conclusions are drawn as to its mode of emplacement. The stock consists of plutonic and hypabyssal rocks which intrude folded Ordovician (?) schist and quartzite. The longer axis, trending north-northwest across the strike of the country...