Journal article
Ca and Sr isotope constraints on the formation of the Marinoan cap dolostones
GY Wei, AVS Hood, X Chen, D Li, W Wei, B Wen, Z Gong, T Yang, ZF Zhang, HF Ling
Earth and Planetary Science Letters | ELSEVIER SCIENCE BV | Published : 2019
Abstract
Neoproterozoic cap dolostones, which ubiquitously overlie Marinoan glacial diamictites, may record marine and climatic paleo-environmental conditions at the termination of the largest glacial epoch in Earth's history. Many geochemical indices have been used to interpret cap dolostone formation in the context of extreme climate change in the aftermath of the Marinoan glaciation. However, there are significant debates about whether these geochemical data represent global signals or regional sedimentary and/or diagenetic processes. Here we analyzed cap dolostones from three different continental cratons for their Ca-isotope, Sr-isotope and trace element compositions in order to obtain new insig..
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Awarded by National Aeronautics and Space Administration
Funding Acknowledgements
We thank Dr. Dan Asael for assistance with the lab work; Dr. Noah J. Planaysky and Ming-Yu Zhao for useful discussion and Emily Stewart for collecting samples. We gratefully acknowledge the constructive comments by Editor Prof. Derek Vance and three anonymous reviewers. This study was funded by the Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) (XDB26000000) and the National Natural Science Foundation of China (NSFC) program (41661134048, 41672026, 41872002). Guang-Yi Wei is also funded by a state scholarship grant from China Scholarship Council (CSC) and the program A for Outstanding PhD. Candidate of Nanjing University (No. 201802A020). A.v.S. Hood acknowledges a NASA Astrobiology Postdoctoral Fellowship and the University of Melbourne Puzey Fellowship.