Primary Oxidation Variation and Distribution of Uranium and Thorium in a Lava Flow
Abstract
An Icelandic basalt lava flow has a systematic oxidation variation, formed during the initial cooling, with a resultant maximum oxidation just below the center of the lava. The ratio of thorium to uranium shows a clear dependence on this primary oxidation variation. Between-lava comparisons of thorium and uranium may be critically dependent on the position of the samples in each lava.
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Science
Volume 155 | Issue 3762
3 February 1967
3 February 1967
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© 1967.
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Published in print: 3 February 1967
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