Radioactivity as a guide to ore

Gross, W. H.

doi:10.2113/gsecongeo.47.7.722

Cited by 14 publications

(4 citation statements)

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“…It may be inferred that the primordiaJ sulfur isotope ratios of the subcrust or mantle are similar to that for meteorites and that there is a genetic connection. These results are in accord with the original sug- These and other granitic intrusives had been investigated by Gross [1952Gross [ , 1956 in an effort to determine the direction of flow of late gold-bearing solutions from these bodies. The intrusivc;'• are of particular interest because of their variation in SiO• content (shown in Figures 6 and 7), which could be a manifestation of differentiation within the magma.…”

Section: The Results Of Chemical Analyses and Mass Spectrometric A•alsupporting

confidence: 82%

Sulfur isotope abundances in basic sills, differentiated granites, and meteorites

Shima¹,

Gross²,

Thode³

1963

J. Geophys. Res.

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Studies have been made of the S32/S34 ratios in four large basic sills presumably of deep‐seated origin. The average ratio for these sills was determined by weighting each sample according to sulfur content and in accordance with the thickness of rock represented by each sample. These average ratios were within 1.0 per mil of the value for meteoritic sulfur. This is comparable with a spread of about 12.0 per mil for igneous rocks and an over‐all spread of about 120.0 per mil for terrestrial samples. In the study of igneous rocks, both intrusive and extrusive, a number of granitic intrusives were found to have S32/S34 ratios completely outside the range of values for all other igneous rocks. The results suggest that these intruded granites are regenerated sediments rather than acidic differentiates that have risen from the subcrust or mantle.

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Section: The Results Of Chemical Analyses and Mass Spectrometric A•alsupporting

confidence: 82%

Sulfur isotope abundances in basic sills, differentiated granites, and meteorites

Shima¹,

Gross²,

Thode³

1963

J. Geophys. Res.

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“…Otherwise they could reach the atmosphere. It is known that soil gases containing iodine are potentially valuable sampling media in prospecting for Pb-Zn sulphides and other heavy metal deposits [26], which also often display enhanced radioactivity [30]. These deposits apparently serve as geochemical traps for iodine in reducing environments and turn under effect of irradiation into sources of its volatile compounds under oxidizing conditions.…”

Section: Formation Watersmentioning

confidence: 99%

Radiolysis as a Factor Influencing Migration Behaviour of Iodine in the Geosphere

Vovk

1988

Radiochimica Acta

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Iodine /Radiation chemistry /GeochemistrySummary This paper provides a literature review of the studies which elucidate the influence of radiolysis on the migration of iodine in the geosphere in relation to safety assessments of underground disposal of 119 1 and lead as well to a better understanding of the geochemistry of this element. Radiation has been shown in a number of publications to have a considerable effect on the chemical behaviour of iodine in aqueous solutions, water-rock and similar heterogeneous systems. Some geochemical features of iodine in uranium deposits and in very old formation waters manifesting its radiolytic behaviour in nature are also discussed.

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“…The radiometric method measures naturally occurring radioactivity in the form of gamma-rays [1][2][3]. Most of this radiation originates from mineral species, containing radioactive isotopes of three elements ( 40 K, 238 U, 232 Th).…”

Section: Introductionmentioning

confidence: 99%

Determination of Natural Radioactivity from²³²Th with Gamma-Ray Spectrometer in Dereköy-Yazır (Southwestern Anatolia)

et al. 2015

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This study presents new data on the baseline concentrations of Thorium over the Dereköy-Yazır (Ağlasun-Burdur) volcanic area. Portable gamma-ray spectrometer was used for natural thorium mapping. In situ measurements were made in the field, in the area of 7.5 km 2 at 165 points. Variations in the Th concentration in the surficial environment of the Dereköy-Yazır region appear to be related to bedrock lithology. The measured thorium concentration varies between 0.68-36 ppm, in the studied area. The highest concentration values were obtained from volcanic rocks. The outcropping volcanic rocks in the region are Pliocene alkaline basalts.

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Radioactivity as a guide to ore

Cited by 14 publications

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Sulfur isotope abundances in basic sills, differentiated granites, and meteorites

Sulfur isotope abundances in basic sills, differentiated granites, and meteorites

Radiolysis as a Factor Influencing Migration Behaviour of Iodine in the Geosphere

Determination of Natural Radioactivity from²³²Th with Gamma-Ray Spectrometer in Dereköy-Yazır (Southwestern Anatolia)

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Radioactivity as a guide to ore

Cited by 14 publications

References 0 publications

Sulfur isotope abundances in basic sills, differentiated granites, and meteorites

Sulfur isotope abundances in basic sills, differentiated granites, and meteorites

Radiolysis as a Factor Influencing Migration Behaviour of Iodine in the Geosphere

Determination of Natural Radioactivity from232Th with Gamma-Ray Spectrometer in Dereköy-Yazır (Southwestern Anatolia)

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Determination of Natural Radioactivity from²³²Th with Gamma-Ray Spectrometer in Dereköy-Yazır (Southwestern Anatolia)