Boulder, Colo., USA New Geology papers cover ancient iron oceans; the Antarctic and global climate/carbon-cycle feedbacks; evidence of catastrophic spillover from kilometer-deep bodies of water on Mars; the role of volcanic emissions in ozone depletion; "fingerprinting" San Andreas fault sandstone; a climax in Earth's mountain-building cycle; the last place on land undergoing continental breakup; garnet as a proxy for subduction zone dehydration; and evidence of migrating mammals at the Venta del Moro fossil site, Spain.
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Stability of the nitrogen cycle during development of sulfidic water in the redox-stratified late Paleoproterozoic Ocean
Linda V. Godfrey et al., Institute of Marine and Coastal Sciences, Rutgers University, New Brunswick, New Jersey 08901, USA. Posted online ahead of print on 29 April 2013; http://dx.doi.org/10.1130/G33930.1.
Around 1,840 million years ago, a widespread transition to euxinia occurred along productive continental margins. Anoxic sulﬁdic condition
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