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Zn isotope evidence for immediate resumption of primary productivity after snowball Earth

Kunzmann, Marcus; Halverson, Galen P; Sossi, Paolo; Raub, Timothy D; Payne, Justin L; Kirby, Jason


The Ediacaran period began with the deglaciation of the ca. 635 Ma Marinoan snowball Earth and the deposition of cap dolostones on continental shelves worldwide during postglacial sea-level rise. These carbonates sharply overlie glacial sediments deposited at low paleolatitudes and preserve negative carbon isotope excursions. The snowball Earth hypothesis invokes an almost complete cessation of primary productivity in the surface ocean. Because assimilatory uptake of Zn appears to fractionate...[Show more]

CollectionsANU Research Publications
Date published: 2013
Type: Journal article
Source: Geology
DOI: 10.1130/G33422.1


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