Ferruginous Conditions Dominated Later Neoproterozoic Deep-Water Chemistry Export

@article{citeulike:4023115, abstract = {Earth's surface chemical environment has evolved from an early anoxic condition to the oxic state we have today. Transitional between an earlier Proterozoic world with widespread deep-water anoxia and a Phanerozoic world with large oxygen-utilizing animals, the Neoproterozoic Era [1000 to 542 million years ago (Ma)] plays a key role in this history. The details of Neoproterozoic Earth surface oxygenation, however, remain unclear. We report that through much of the later Neoproterozoic (<742 {+/-} 6 Ma), anoxia remained widespread beneath the mixed layer of the oceans; deeper water masses were sometimes sulfidic but were mainly Fe2+-enriched. These ferruginous conditions marked a return to ocean chemistry not seen for more than one billion years of Earth history. 10.1126/science.1154499}, author = {Canfield, Donald E. and Poulton, Simon W. and Knoll, Andrew H. and Narbonne, Guy M. and Ross, Gerry and Goldberg, Tatiana and Strauss, Harald}, citeulike-article-id = {4023115}, citeulike-linkout-0 = {http://dx.doi.org/10.1126/science.1154499}, citeulike-linkout-1 = {http://view.ncbi.nlm.nih.gov/pubmed/18635761}, citeulike-linkout-2 = {http://www.hubmed.org/display.cgi?uids=18635761}, day = {15}, doi = {10.1126/science.1154499}, journal = {Science}, keywords = {anoxia, chemistry, climate, deep-water, iron, neoproterozoic, ocean, paleoclimate, proterozoic}, month = {August}, number = {5891}, pages = {949--952}, posted-at = {2009-02-08 15:36:18}, priority = {2}, title = {Ferruginous Conditions Dominated Later Neoproterozoic Deep-Water Chemistry}, url = {http://dx.doi.org/10.1126/science.1154499}, volume = {321}, year = {2008} }

TY - JOUR ID - citeulike:4023115 L3 - citeulike-article-id:4023115 N2 - Earth's surface chemical environment has evolved from an early anoxic condition to the oxic state we have today. Transitional between an earlier Proterozoic world with widespread deep-water anoxia and a Phanerozoic world with large oxygen-utilizing animals, the Neoproterozoic Era [1000 to 542 million years ago (Ma)] plays a key role in this history. The details of Neoproterozoic Earth surface oxygenation, however, remain unclear. We report that through much of the later Neoproterozoic (<742 {+/-} 6 Ma), anoxia remained widespread beneath the mixed layer of the oceans; deeper water masses were sometimes sulfidic but were mainly Fe2+-enriched. These ferruginous conditions marked a return to ocean chemistry not seen for more than one billion years of Earth history. 10.1126/science.1154499 IS - 5891 JF - Science EP - 952 TI - Ferruginous Conditions Dominated Later Neoproterozoic Deep-Water Chemistry VL - 321 SP - 949 KW - anoxia KW - chemistry KW - climate KW - deep-water KW - iron KW - neoproterozoic KW - ocean KW - paleoclimate KW - proterozoic AU - Canfield, Donald AU - Poulton, Simon AU - Knoll, Andrew AU - Narbonne, Guy AU - Ross, Gerry AU - Goldberg, Tatiana AU - Strauss, Harald PY - 2008/08/15/ UR - http://dx.doi.org/10.1126/science.1154499 ER -