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Content with the tag: “banded iron formations”
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Rock Bands Spin an Oxygen Record
The rise of oxygen on early Earth may have been caused by a microbial changing of the guard between methane-producers and oxygen-producers. This swap may have been initiated by a drop in the ocean’s nickel abundance. Continuing studies of the world’s largest iron ore deposits could cement the case.
Source: [Astrobiology Magazine]
June 21, 2009 / Written by: Michael Schirber
Sulfur biogeochemistry of the Early Earth
ROADMAP OBJECTIVES: 1.1, 1.2, 4.1, 4.2, 5.1, 5.2, 5.3, 6.1, 7.1, 7.2
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