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Researchers Detect Hint of Oxygen 50 to 100 Million-Years-Earlier than First Believed

September 27, 2007

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Two multinational teams of scientists, including researchers from Arizona State University, are reporting that traces of oxygen appeared in the earth's atmosphere 50 to 100 million-years-before the "Great Oxidation Event." Analyzing layers of sedimentary rock in a core sample from the Hamersley Basin in Western Australia, the researchers report finding evidence that a small but significant amount of oxygen--a whiff--was present in the oceans and possibly in the earth's atmosphere. Full Story

Arizona State University

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The National Science Foundation (NSF) is an independent federal agency that supports fundamental research and education across all fields of science and engineering. In fiscal year (FY) 2018, its budget is $7.8 billion. NSF funds reach all 50 states through grants to nearly 2,000 colleges, universities and other institutions. Each year, NSF receives more than 50,000 competitive proposals for funding and makes about 12,000 new funding awards.

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