Iron Ore – Deposit to Global Scale Processes – S05

James Conliffe (Geological Survey of Newfoundland)
Steffen Hagemann (University of Western Australia)
Kurt Konhauser (University of Alberta)
Sedimentary iron formations are common in Archean and Paleoproterozoic sedimentary successions, and are host to > 90% of the world’s economic iron ore deposits. In addition to their economic importance, sedimentary iron formations can provide information on the co-evolution of life and the surface environment on the early Earth. This session will deal with the sedimentology, stratigraphy and geochemistry of primary iron formations, implications for our understanding of the redox changes affecting the Archean and Paleoproterozoic atmosphere-hydrosphere-biosphere, and current perspectives on the formation of high-grade hypogene and supergene (> 55% Fe) iron ore deposits and districts.
Types of presentation: Posters only