| Literature DB >> 17816370 |
E C Perry, J Monster, T Reimer.
Abstract
Sedimentary barites from the Swaziland System of South Africa (more than 3000 million years old) have sulfur-34 ratios that are enriched by only 2.5 per mil with respect to contemporary sulfides. To explain this small fractionation, it is proposed that oxygen pressure in the earth's atmosphere was very low and that local oxidation occurred in a photosynthetic layer of the ocean.Entities:
Year: 1971 PMID： 17816370 DOI： 10.1126/science.171.3975.1015
Source DB: PubMed Journal: Science ISSN： 0036-8075 Impact factor: 47.728