Relationship of uranium and other trace elements to post-Cretaceous vulcanism

Trace Elements Investigations 159



A regional study of the distribution of uranium, boron, tin, beryllium, niobium, lanthanum, lead, zirconium, lithium, and fluorine in 112 samples of Cenozoic volcanic rocks of predominately rhyolitic and dacitic composition has shown that the content of uranium has a significantly high positive correlation with that of niobium, beryllium, and fluorine, a lower but still significant positive correlation with lithium and tin, a significant negative correlation with boron and lanthanum, and no significant correlation with zirconium and lead. A study of the relation of content of the several elements to the geographic provenance shows significant variation with provenance for all these elements, except tin and lanthanum. On the basis of these variations and on patterns of consistency, five comagmatic provinces, one of which is divided into three sub-provinces, have been delimited, in part, on a map of the western United States. The patter of distribution of boron is significantly different from that of the other elements. The regional difference are perhaps best explained by structural control of the effectiveness of vertical transport.

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Publication type Report
Publication Subtype USGS Numbered Series
Title Relationship of uranium and other trace elements to post-Cretaceous vulcanism
Series title Trace Elements Investigations
Series number 159
DOI 10.3133/tei159
Year Published 1955
Language English
Publisher U.S. Geological Survey
Description 66 p.
Country United States
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