Noah Planavsky, Andrey Bekker, Olivier J Rouxel, Balz Kamber, Axel Hofmann, Andrew Knudsen, Timothy W Lyons

2010/11/15

Geochimica et Cosmochimica Acta

74

22

6387-6405

Pergamon

The ocean and atmosphere were largely anoxic in the early Precambrian, resulting in an Fe
cycle that was dramatically different than today's. Extremely Fe-rich sedimentary deposits—
ie, Fe formations—are the most conspicuous manifestation of this distinct Fe cycle. Rare
Earth Element (REE) systematics have long been used as a tool to understand the origin of
Fe formations and the corresponding chemistry of the ancient ocean. However, many earlier
REE studies of Fe formations have drawn ambiguous conclusions, partially due to ...