Deposition of 1.88-billion-year-old iron formations as a consequence of rapid crustal growth

Birger Rasmussen (), Ian R. Fletcher, Andrey Bekker, Janet R. Muhling, Courtney J. Gregory and Alan M. Thorne
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Birger Rasmussen: Curtin University, Kent Street, Bentley, Western Australia 6102, Australia
Ian R. Fletcher: Curtin University, Kent Street, Bentley, Western Australia 6102, Australia
Andrey Bekker: University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
Janet R. Muhling: Centre for Microscopy, Characterisation and Analysis, The University of Western Australia, Crawley, Western Australia 6009, Australia
Courtney J. Gregory: Curtin University, Kent Street, Bentley, Western Australia 6102, Australia
Alan M. Thorne: Geological Survey of Western Australia, Mineral House, 100 Plain Street, East Perth, Western Australia 6004, Australia

Nature, 2012, vol. 484, issue 7395, 498-501

Abstract: The reappearance of major iron formations at 1.88 billion years ago (after the rise in atmospheric oxygen) is puzzling because their deposition requires anoxic and iron-rich sea water, but is here explained as a consequence of major mantle activity and rapid crustal growth at that time.

Date: 2012
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DOI: 10.1038/nature11021

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