The effects of radioactive decay of uranium on elemental and isotopic ratios of Alum Shale kerogen

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doi: 10.1016/0883-2927(88)90090-X
Authors:Dahl, Jeremy; Hallberg, Rolf; Kaplan, Isaac R.
Author Affiliations:Primary:
Univ. Calif., Dep. Earth and Planet. Sci., Los Angeles, CA, United States
Stockholms Univ., Sweden
Volume Title:Applied Geochemistry
Source:Applied Geochemistry, 3(6), p.583-589. Publisher: Pergamon, Oxford-New York-Beijing, International. ISSN: 0883-2927
Publication Date:1988
Note:In English. 21 refs.; illus. incl. 2 tables, sketch maps
Summary:The organic matter in the Swedish Alum shale shows effects of irradiation. For kerogens, H/C ratios were found to be inversely correlated, and 13C/12C ratios positively correlated to the natural log of the U concentration. This agrees with previous work. The O/C ratios tend to increase with increasing U concentrations. It is possible that the level of oxidation to which a sample has been subjected may be proportional to its level of radiation. The 'Rock-Eval' maturity parameters 'P.I.' and 'Tmax' decrease with increasing U concentration. The decrease in 'P.I.' is believed to be related to bitumen destruction or polymerization by radiation in samples with high U concentrations. [R.E.S.]
Subjects:Actinides; Geochemistry; Isotopes; Kerogen; Metals; Organic compounds; Oxidation; Uranium; Europe; Scandinavia; Sweden; Western Europe; Alum Shale; Organic materials; Ratios
Abstract Numbers:89M/3441
Record ID:1989019110
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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