Browsing FAS Scholarly Articles by Keyword "Chuar Group"
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Chuar Group of the Grand Canyon: Record of Breakup of Rodinia, Associated Change in the Global Carbon Cycle, and Ecosystem Expansion by 740 Ma
(Geological Society of America, 2000)The Chuar Group (similar to 1.600 m thick) preserves a record of extensional tectonism, ocean-chemistry fluctuations, and biological diversification during the late Neoproterozoic Era. An ash layer from the top of the ... -
Molybdenum evidence for expansive sulfidic water masses in ~750Ma oceans
(Elsevier BV, 2011)The Ediacaran appearance of large animals, including motile bilaterians, is commonly hypothesized to reflect a physiologically enabling increase in atmospheric and oceanic oxygen abundances (pO2). To date, direct evidence ...