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Carbon isotopic change at the base of the upper permian zechstein sequence
Author(s) -
Magaritz Mordeckai,
And Peter Turner,
Käding KarlChristian
Publication year - 1981
Publication title -
geological journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.721
H-Index - 54
eISSN - 1099-1034
pISSN - 0072-1050
DOI - 10.1002/gj.3350160404
Subject(s) - permian , isotopes of carbon , geology , carbonate , carbon fibers , sequence (biology) , paleontology , total organic carbon , anoxic waters , oceanography , chemistry , environmental chemistry , structural basin , biochemistry , materials science , organic chemistry , composite number , composite material
Fluctuation of the carbon isotope composition of marine carbonates has recently been developed as a powerful tool for the identification of ocean‐wide anoxic conditions and changes in the world budget of carbon and oxygen. A change in δ 13 from the normal marine values (0 to + 2%) to values highly enriched in 13 C (+3·5 to 4·5%) is recorded at the base of the Zechstein sequence both in central Germany and northeastern England. The change occurred over a relatively short period of time indicating a rapid and pronounced change in the organic carbon/carbonate budget. Evidence from other Permian basins show similar highly enriched δ 13 C values. This change may correspond to that in carbon balance distinguished by the Garrels and Perry (1975) model and based on the change in sulphur isotopic composition during the Permian.