Migration of Uranium and Thorium-Exploration Significance

Gabelman, John W.

doi:10.1306/st3392

Cited by 24 publications

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“…The detailed interpretation of U/Th ratios requires examination of several geochemical parameters and will not be attempted in this report. However, in general terms, the greater the U/Th ratio, the greater the amount of soluble uranium (Gabelman, 1977;Roberts et al, 1978). Nishimori et al (1977) state that most known vein-and sedimentary-uranium-ore deposits have U/Th ratios greater than 1.00.…”

Section: Thorium Concentrations In Sediment Samplesmentioning

confidence: 99%

“…To summarize, sediment samples with high U/Th ratios are associated with Precambrian granitic and metavolcanic rocks of the 1700-million-year age group. In these samples, which contain relatively low (usually near 10 ppm) amounts of uranium and thorium, the high U/Th ratios may indicate that the uranium is readily mobilized (Gabelman, 1977;Nishimori et al, 1977).…”

Section: Thorium Concentrations In Sediment Samplesmentioning

confidence: 99%

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Uranium hydrogeochemical and stream sediment reconnaissance of the Craig NTMS Quadrangle, Colorado, including concentrations of forty-three additional elements

Bolivar¹,

Hill²

1979

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Plate No. I. Sample location overlay for the Craig NTMS quadrangle, Colorado. pocket II. Uranium concentrations (ppb) in watersoverlay to the Craig NTMS quadrangle, Colorado. pocket III. Conductivities (yimho/cm) in watersoverlay to the Craig NTMS quadrangle, Colorado. pocket IV. Uranium concentrations (ppm) in sedimentsoverlay to the Craig NTMS quadrangle, Colorado. pocket V. Thorium concentrations (ppm) in sedimentsoverlay to the Craig NTMS quadrangle, Colorado. pocket LIST OF TABLES Table No. I. Principal Rock Units in the Craig Quadrangle, Colorado 6 II. Generalized Descriptions of Major Uranium Districts in the Craig Quadrangle, Colorado 10 III. Summary of Uranium Data for Water Samples from the Craig Quadrangle, Colorado 13 IV. Clusters of Water Samples with Anomalous Uranium Concentrations (greater than 10 ppb) from the Craig Quadrangle, Colorado 15 V. Summary of Uranium Data for Sediment Samples from the Craig Quadrangle, Colorado 17 VI. Clusters of Sediment Samples with Anomalous Uranium Concentrations (greater than 20 ppm) from the Craig Quadrangle,

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Section: Thorium Concentrations In Sediment Samplesmentioning

confidence: 99%

Section: Thorium Concentrations In Sediment Samplesmentioning

confidence: 99%