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The stable isotopic composition of a phosphorite deposit: ??13C, ??34S, and ??18O

Deep Sea Research Part A, Oceanographic Research Papers

By:
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Abstract

The stable isotopes of carbon and sulfur in a major marine sedimentary phosphate deposit from the northwestern United States (the Phosphoria Formation of Permian age) characterize the chemical properties of the depositional environment. The ??34S and ??13C analyses suggest deposition under conditions of variable redox from a solution the acidity of which was controlled by reaction with carbonate rocks and exchange with seawater. The ??18O concentration of apetite indicates phosphatization in a shallow sea, during three glacial and intervening interglacial stages. These data tend to corroborate the interpretation of field studies by others, that the apatite formed on a continental shelf in an area of intense oceanic upwelling during several episodes of sea level change. ?? 1987.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
The stable isotopic composition of a phosphorite deposit: ??13C, ??34S, and ??18O
Series title:
Deep Sea Research Part A, Oceanographic Research Papers
Volume
34
Issue:
5-6
Year Published:
1987
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Deep Sea Research Part A, Oceanographic Research Papers
First page:
897
Last page:
911