Kump, L.R., Junium, C., Arthur, M.A., Brasier, A., Fallick, A.E., Melezhik, V., Lepland, A., CCrne, A.E. and Luo, G. (2011) Isotopic evidence for massive oxidation of organic matter following the great oxidation event. Science, 334(6063), pp. 1694-1696. (doi: 10.1126/science.1213999)
Full text not currently available from Enlighten.
Publisher's URL: http://dx.doi.org/10.1126/science.1213999
Abstract
The stable isotope record of marine carbon indicates that the Proterozoic Eon began and ended with extreme fluctuations in the carbon cycle. In both the Paleoproterozoic [2500 to 1600 million years ago (Ma)] and Neoproterozoic (1000 to 542 Ma), extended intervals of anomalously high carbon isotope ratios (δ<sup>13</sup>C) indicate high rates of organic matter burial and release of oxygen to the atmosphere; in the Neoproterozoic, the high δ<sup>13</sup>C interval was punctuated by abrupt swings to low δ<sup>13</sup>C, indicating massive oxidation of organic matter. We report a Paleoproterozoic negative δ<sup>13</sup>C excursion that is similar in magnitude and apparent duration to the Neoproterozoic anomaly. This Shunga-Francevillian anomaly may reflect intense oxidative weathering of rocks as the result of the initial establishment of an oxygen-rich atmosphere.
Item Type: | Articles |
---|---|
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Brasier, Dr Alexander and Fallick, Professor Anthony |
Authors: | Kump, L.R., Junium, C., Arthur, M.A., Brasier, A., Fallick, A.E., Melezhik, V., Lepland, A., CCrne, A.E., and Luo, G. |
College/School: | College of Science and Engineering > Scottish Universities Environmental Research Centre |
Journal Name: | Science |
Publisher: | American Association for the Advancement of Science |
ISSN: | 0036-8075 |
ISSN (Online): | 1095-9203 |
Published Online: | 01 December 2011 |
University Staff: Request a correction | Enlighten Editors: Update this record