Journal article
Neoproterozoic marine carbonates and their paleoceanographic significance
AVS Hood, MW Wallace
Global and Planetary Change | ELSEVIER SCIENCE BV | Published : 2018
Abstract
The primary mineralogy of marine carbonate precipitates has been a crucial factor in constraining the major element composition of ancient oceans. Secular changes in Phanerozoic marine chemistry, including Mg/Ca, have been well-documented using the original carbonate mineralogy of ooids, marine cements and biominerals. However, the history of Precambrian seawater chemistry is not as well constrained, partially due to the prevalence of dolomitisation in the Precambrian geological record. The Neoproterozoic (~ 1000 Ma to ~ 541 Ma) record of primary carbonate mineralogy is documented here using a combination of literature data and new analysis of marine carbonate precipitates from the Otavi Fol..
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Awarded by Australian Research Council
Funding Acknowledgements
The authors would like to thank the editor, Thomas Cronin, and reviewers Rachel Wood and Sarbani Patranabis-Deb for their comments, which improved the manuscript. In addition we thank Ian Fairchild for his earlier comments on the manuscript. We would like to acknowledge ARC Discovery Grant DP130102240 for partially funding this research. A.v.S.H. acknowledges the support of a NAI Postdoctoral Fellowship and the Elizabeth and Vernon Puzey Fellowship. We are ever grateful to Marg and Doug Sprigg of Arkaroola Wilderness Sanctuary for their generous support of fieldwork over many years. We also thank Charlie Hoffman (Namibian Geological Survey) and Chris Reed and others at Teck Namibia Ltd. for their support in Namibia. Additionally, this work has been aided greatly by those involved in BITSERA.