News tagged with great oxygenation event
Debut of chromium signatures clocks great oxidation event
Banded ironstone core samples from the Pilbara have aided in dating the first appearance of atmospheric oxygen at 2.48 billion years ago.
Space & Earth / Earth Sciences
Nov 25, 2011 |
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Oxygen-free early oceans likely delayed rise of life on planet
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 ...
Space & Earth / Earth Sciences
Jan 10, 2011 |
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Geologists revisit the Great Oxygenation Event
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 ...
Space & Earth / Earth Sciences
Aug 19, 2010 |
4.9 / 5 (16) |
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Search results for great oxygenation event
Geological record shows air up there came from below
(Phys.org) -- The influence of the ground beneath us on the air around us could be greater than scientists had previously thought, according to new research that links the long-ago proliferation of oxygen ...
Space & Earth / Earth Sciences
May 23, 2012 |
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Group finds circadian clock common to almost all life forms
(Phys.org) -- A group of biology researchers, led by Akhilesh Reddy from Cambridge University have found an enzyme that they believe serves as a circadian clock that operates in virtually all forms of life. ...
May 17, 2012 |
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Scientists core into California's Clear Lake to explore past climate change
(Phys.org) -- University of California, Berkeley, scientists are drilling into ancient sediments at the bottom of Northern California's Clear Lake for clues that could help them better predict how today's ...
Space & Earth / Earth Sciences
May 03, 2012 |
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Solution to ancient rock puzzle posited
A superplume, or massive episode of volcanic eruptions that related to extensive melting of the Earth's mantle, could explain the puzzling reappearance of major iron formations long after the rise in atmospheric ...
Space & Earth / Earth Sciences
Apr 27, 2012 |
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From fins to limbs
Tonight Cambridge vertebrate palaeontologist Professor Jenny Clack is the subject of BBC Four’s Beautiful Minds series. The programme looks at her contribution to our understanding of early tetrapods ...
Other Sciences / Archaeology & Fossils
Apr 12, 2012 |
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On-site rescue plan urged for confined spaces
Many employers are mistakenly relying upon public fire departments to rescue workers from confined spaces, such as water and sewer pipes, manholes and tunnels, according to an analysis by University of California, Berkeley, ...
Feb 14, 2012 |
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Global extinction: Gradual doom is just as bad as abrupt
A painstakingly detailed investigation shows that mass extinctions need not be sudden events. The deadliest mass extinction of all took a long time to kill 90 percent of Earth's marine life, and it killed ...
Space & Earth / Earth Sciences
Feb 03, 2012 |
4.2 / 5 (20) |
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Space Weather Center to add world's first 'ensemble forecasting' capability
Improved Forecasting to Coincide with Peak in Solar Activity
Space & Earth / Space Exploration
Jan 28, 2012 |
4 / 5 (2) |
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Horseshoe crabs are one of nature's great survivors
It may look like something out of a science fiction movie, but the horseshoe crab is definitely real. In fact it is one of nature’s great survivors, lasting through 3 of the Earth’s major extinction ...
Jan 24, 2012 |
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Elusive matter found to be abundant far above Earth
(PhysOrg.com) -- Cold plasma has been well-hidden. Space physicists have long lacked clues to how much of this electrically charged gas exists tens of thousands of miles above Earth and how the stuff may impact our planet's ...
Space & Earth / Space Exploration
Jan 24, 2012 |
4.9 / 5 (12) |
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List of search results for great oxygenation event
