(Phys.org) —Zunli Lu and Xiaoli Zhou, an assistant professor and Ph.D. student, respectively, in the Department of Earth Sciences, are part of an international team of researchers whose findings have been published by the ...
Earth Sciences
Jun 10, 2014
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A team of biogeochemists at the University of California, Riverside, give us a nontraditional way of thinking about the earliest accumulation of oxygen in the atmosphere, arguably the most important biological event in Earth ...
Earth Sciences
Feb 19, 2014
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(Phys.org) —A team of European researchers has published a paper in the journal Proceedings of the National Academy of Sciences, offering a possible explanation for the apparent drop in early Earth's oxygen levels following ...
Banded ironstone core samples from the Pilbara have aided in dating the first appearance of atmospheric oxygen at 2.48 billion years ago.
Earth Sciences
Nov 25, 2011
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Geologists at the University of California, Riverside have found chemical evidence in 2.6-billion-year-old rocks that indicates that Earth's ancient oceans were oxygen-free and, surprisingly, contained abundant hydrogen sulfide ...
Earth Sciences
Jan 10, 2011
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(PhysOrg.com) -- Bacteria that produce oxygen may have evolved hundreds of millions of years earlier than previously thought, a new study into ancient rock formations in Western Australia suggests.
Earth Sciences
Sep 9, 2010
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In "The Sign of the Four" Sherlock Holmes tells Watson he has written a monograph on 140 forms of cigar-, cigarette-, and pipe-tobacco, "with colored plates illustrating the difference in the ash." He finds the ash invaluable ...
Earth Sciences
Aug 19, 2010
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