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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Reconstructing Earth's surface oxidation across the Archean-Proterozoic transition
Geology, Volume 37, No. 5, Year 2009
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Description
The Archean-Proterozoic transition is characterized by the widespread deposition of organic-rich shale, sedimentary iron formation, glacial diamictite, and marine carbonates recording profound carbon isotope anomalies, but notably lacks bedded evaporites. All deposits reflect environmental changes in oceanic and atmospheric redox states, in part associated with Earth's earliest ice ages. Time-series data for multiple sulfur isotopes from carbonate-associated sulfate as well as sulfides in sediments of the Transvaal Supergroup, South Africa, capture the concomitant buildup of sulfate in the ocean and the loss of atmospheric mass-independent sulfur isotope fractionation. In phase with sulfur is the earliest recorded positive carbon isotope anomaly, convincingly linking these environmental perturbations to the Great Oxidation Event (ca. 2.3 Ga). © 2009 Geological Society of America.
Authors & Co-Authors
Guo, Qingjun
China, Guiyang
Institute of Geochemistry Chinese Academy of Sciences
Germany, Munster
University of Münster
Strauss, Harald
Germany, Munster
University of Münster
Kaufman, Alan Jay
Germany, Munster
University of Münster
United States, College Park
University of Maryland, College Park
Schröder, Stefan
South Africa, Johannesburg
University of Johannesburg
France, Paris
Total S.a.
Gutzmer, Jens
South Africa, Johannesburg
University of Johannesburg
Germany, Freiberg
Technische Universität Bergakademie Freiberg
Wing, Boswell A.
Canada, Montreal
Université Mcgill
Baker, Margaret A.
United States, College Park
University of Maryland, College Park
Bekker, Andrey Yu
Canada, Winnipeg
University of Manitoba
Jin, Quesheng
United States, Eugene
University of Oregon
Kim, Sang Tae
United States, College Park
University of Maryland, College Park
Farquhar, James
United States, College Park
University of Maryland, College Park
Statistics
Citations: 259
Authors: 11
Affiliations: 9
Identifiers
Doi:
10.1130/G25423A.1
ISSN:
00917613
e-ISSN:
00917613
Research Areas
Environmental
Study Locations
South Africa