C-isotopic stratification in a Neoproterozoic postglacial ocean

We report C-isotopic data from the cap carbonate overlying the terminal Proterozoic Nantuo diamictites in south China. The C-isotopic measurements reveal a large C-isotopic gradient of ∼3‰ along paleoenvironmental transect from shelf to deep basinal sedimentary facies. The C-isotopic stratification...

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Bibliographic Details
Published in:Precambrian research 2005-06, Vol.137 (3), p.243-251
Main Authors: Shen, Yanan, Zhang, Tonggang, Chu, Xuelei
Format: Article
Language:English
Subjects:
13C/12C
Cap carbonate
Marine
Neoproterozoic
Ocean chemistry
Stratification
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Summary:We report C-isotopic data from the cap carbonate overlying the terminal Proterozoic Nantuo diamictites in south China. The C-isotopic measurements reveal a large C-isotopic gradient of ∼3‰ along paleoenvironmental transect from shelf to deep basinal sedimentary facies. The C-isotopic stratification may attribute to the effect of biological pumping in a postglacial ocean. Our results confirm that the sea-level rise was rapid and that atmospheric CO 2 was significantly high immediately following deglaciation.
ISSN:0301-9268
1872-7433
DOI:10.1016/j.precamres.2005.03.004