on 05-11-201704:39 AM - edited on 11-09-202104:14 AM by usermigration2
1) Institute of Earth and Planetary Sciences, University College London and Birkbeck, University of London, Gower Street, London WC1E 6BT, UK, 2) Bristol Isotope Group, School of Earth Sciences, Bristol University, Wills Memorial Building, Queen’s Road, Bristol BS8 1RJ, UK, 3) Department of Earth and Space Sciences, University of Washington, Seattle, Washington 98195, USA, 4) School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK, 5) Department of Geology, Utah State University, Logan, Utah 84322, USA, 6) NordCEE, University of Southern Denmark, 5230 Odense M, Denmark Nature Communications (2015), V6:10157, doi:10.1038/ncomms10157 Selenium isotope evidence for progressive oxidation of the Neoproterozoic biosphere Philip A.E. Pogge von Strandmann (1,2), Eva E. Stüeken (3), Tim Elliott (2), Simon W. Poulton (4), Carol M. Dehler (5), Don E. Canfield (6) and David C. Catling (2,3) Neoproterozoic (1,000–542 Myr ago) Earth experienced profound environmental change, including ‘snowball’ glaciations, oxygenation and the appearance of animals. However, an integrated understanding of these events remains elusive, partly because proxies that track subtle oceanic or atmospheric redox trends are lacking. Here we utilize selenium (Se) isotopes as a tracer of Earth redox conditions.