Correlation of 13 C / 12 C and 34 S / 32 S secular variations

Details Correlation of 13 C / 12 C and 34 S / 32 S secular variations Correlation of 13 C / 12 C and 34 S / 32 S secular variations

Apr 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980gecoa..44..579v&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 44, Issue 4, pp.579-587

Mathematics

Logic

40

Scientific paper

Statistical evaluation of 3056 13 C measurements in carbonate rocks and fossils shows that they record a 2 13 C depletion from the late Proterozoic to the early Paleozoic, a 2.5 enrichment to the Permian, and a 1.5 depletion to the Cenozoic. These variations, not controlled primarily by facies or alteration phenomena, correlate negatively with the 34 S sulfate secular trend, as confirmed by collation of 1083 34 S measurements. The correlation suggests that the biologically mediated redox fluxes of the C and S cycles have been approximately balanced through this long span of geological time, generally levelling available oxygen. Such a redox system is consistent with the controlling mechanism proposed by and (1974). Consequently, the sedimentary reservoirs of C organic as well as S bacteriological' have varied through geological time.

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