Late Precambrian Oxygenation; Inception of the Clay Mineral Factory Export

@article{citeulike:1367848, abstract = {An enigmatic stepwise increase in oxygen in the late Precambrian is widely considered a prerequisite for the expansion of animal life. Accumulation of oxygen requires organic matter burial in sediments, which is largely controlled by the sheltering or preservational effects of detrital clay minerals in modern marine continental margin depocenters. Here, we show mineralogical and geochemical evidence for an increase in clay mineral deposition in the Neoproterozoic that immediately predated the first metazoans. Today most clay minerals originate in biologically active soils, so initial expansion of a primitive land biota would greatly enhance production of pedogenic clay minerals (the "clay mineral factory"), leading to increased marine burial of organic carbon via mineral surface preservation. 10.1126/science.1118929}, author = {Kennedy, Martin and Droser, Mary and Mayer, Lawrence M. and Pevear, David and Mrofka, David}, citeulike-article-id = {1367848}, citeulike-linkout-0 = {http://dx.doi.org/10.1126/science.1118929}, citeulike-linkout-1 = {http://www.sciencemag.org/cgi/content/abstract/311/5766/1446}, citeulike-linkout-2 = {http://view.ncbi.nlm.nih.gov/pubmed/16456036}, citeulike-linkout-3 = {http://www.hubmed.org/display.cgi?uids=16456036}, day = {10}, doi = {10.1126/science.1118929}, journal = {Science}, keywords = {cambrian-explosion, clay, environmental-change, evolution, oxygen}, month = {March}, number = {5766}, pages = {1446--1449}, posted-at = {2007-06-06 12:56:42}, priority = {0}, title = {Late Precambrian Oxygenation; Inception of the Clay Mineral Factory}, url = {http://dx.doi.org/10.1126/science.1118929}, volume = {311}, year = {2006} }

TY - JOUR ID - citeulike:1367848 L3 - citeulike-article-id:1367848 N2 - An enigmatic stepwise increase in oxygen in the late Precambrian is widely considered a prerequisite for the expansion of animal life. Accumulation of oxygen requires organic matter burial in sediments, which is largely controlled by the sheltering or preservational effects of detrital clay minerals in modern marine continental margin depocenters. Here, we show mineralogical and geochemical evidence for an increase in clay mineral deposition in the Neoproterozoic that immediately predated the first metazoans. Today most clay minerals originate in biologically active soils, so initial expansion of a primitive land biota would greatly enhance production of pedogenic clay minerals (the "clay mineral factory"), leading to increased marine burial of organic carbon via mineral surface preservation. 10.1126/science.1118929 IS - 5766 JF - Science EP - 1449 TI - Late Precambrian Oxygenation; Inception of the Clay Mineral Factory VL - 311 SP - 1446 KW - cambrian-explosion KW - clay KW - environmental-change KW - evolution KW - oxygen AU - Kennedy, Martin AU - Droser, Mary AU - Mayer, Lawrence AU - Pevear, David AU - Mrofka, David PY - 2006/03/10/ UR - http://dx.doi.org/10.1126/science.1118929 ER -