News tagged with earths oceanic
Great Unconformity: Evidence for a geologic trigger of the Cambrian explosion
(Phys.org) -- The oceans teemed with life 600 million years ago, but the simple, soft-bodied creatures would have been hardly recognizable as the ancestors of nearly all animals on Earth today.
Space & Earth / Earth Sciences
Apr 18, 2012 |
4.8 / 5 (19) |
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Amasia: As next supercontinent forms, Arctic Ocean, Caribbean will vanish first
(PhysOrg.com) -- Geologists at Yale University have proposed a new theory to describe the formation of supercontinents, the epic process by which Earth’s major continental blocks combine into a single ...
Space & Earth / Earth Sciences
Feb 08, 2012 |
4.1 / 5 (14) |
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Methane may be answer to 56-million-year question
(PhysOrg.com) -- The release of massive amounts of carbon from methane hydrate frozen under the seafloor 56 million years ago has been linked to the greatest change in global climate since a dinosaur-killing ...
Space & Earth / Earth Sciences
Nov 09, 2011 |
4.9 / 5 (21) |
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First life may have arisen above serpentine rock, researchers say
(PhysOrg.com) -- About 3.8 billion years ago, Earth was teeming with unicellular life. A little more than 4.5 billion years ago, the Earth was a ball of vaporous rock. And somewhere in between, the first organisms ...
Space & Earth / Earth Sciences
Sep 23, 2011 |
4.7 / 5 (7) |
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What caused a giant arrow-shaped cloud on Saturn's moon Titan?
(PhysOrg.com) -- Why does Titan, Saturn's largest moon, have what looks like an enormous white arrow about the size of Texas on its surface?
Space & Earth / Space Exploration
Aug 16, 2011 |
4.5 / 5 (20) |
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NOAA study suggests aerosols might be inhibiting global warming
(PhysOrg.com) -- A new study led by the U.S, National Oceanic and Atmospheric Administration (NOAA) shows that tiny particles that make their way all the way up into the stratosphere may be offsetting a global ...
Space & Earth / Earth Sciences
Jul 22, 2011 |
4.4 / 5 (17) |
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A water ocean on Titan?
Oddities in the rotation of Saturn's largest moon Titan might add to growing evidence that it harbors an underground ocean, researchers suggest.
Space & Earth / Space Exploration
May 05, 2011 |
5 / 5 (23) |
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Taking the temperature of the ancient earth
(PhysOrg.com) -- A new technique has allowed scientists to pin down the timing of ancient glaciations, linking them more firmly to two bursts of extinction.
Space & Earth / Earth Sciences
Mar 08, 2011 |
4.5 / 5 (10) |
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Antarctic sea temperatures cooled in Holocene but now rising: study
(PhysOrg.com) -- A new study of an ocean sediment core taken from deep water off the coast of the western Antarctic Peninsula is beginning to fill in some of the gaps in our knowledge of climate variability ...
Space & Earth / Earth Sciences
Feb 10, 2011 |
4.2 / 5 (18) |
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Ancient ocean chemistry: Effects of biological oxygen production 100 million years before it accumulated in atmosphere
(PhysOrg.com) -- Scientists widely accept that around 2.4 billion years ago, the Earth's atmosphere underwent a dramatic change when oxygen levels rose sharply. Called the "Great Oxidation Event" (GOE), the ...
Space & Earth / Earth Sciences
Oct 29, 2009 |
4.7 / 5 (15) |
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Two More Earth's Chandler Wobble Jumps Revealed, Last in 2005
(PhysOrg.com) -- The Chandler Wobble is a small variation in the rotation of the Earth on its axis. It has been known for some time that the phase of the Chandler Wobble jumped by 180 degrees in the 1920s, ...
Sep 02, 2009 |
4.6 / 5 (17) |
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Water in Earth's mantle may be associated with subduction
A team of scientists from Oregon State University has created the first global three-dimensional map of electrical conductivity in the Earth's mantle and their model suggests that that enhanced conductivity ...
Space & Earth / Earth Sciences
Aug 19, 2009 |
4.3 / 5 (10) |
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Long debate ended over cause, demise of ice ages -- may also help predict future
Researchers have largely put to rest a long debate on the underlying mechanism that has caused periodic ice ages on Earth for the past 2.5 million years - they are ultimately linked to slight shifts in solar radiation caused ...
Space & Earth / Earth Sciences
Aug 06, 2009 |
4.5 / 5 (24) |
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Scientists discover Amazon river is 11 million years old
Researchers at the University of Liverpool have discovered that the Amazon river, and its transcontinental drainage, is around 11 million years old and took its present shape about 2.4 million years ago.
Space & Earth / Earth Sciences
Jul 29, 2009 |
4.4 / 5 (7) |
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The rise of oxygen caused Earth's earliest ice age
(PhysOrg.com) -- Geologists may have uncovered the answer to an age-old question - an ice-age-old question, that is. It appears that Earth's earliest ice ages may have been due to the rise of oxygen in Earth's ...
Space & Earth / Earth Sciences
May 07, 2009 |
4.6 / 5 (20) |
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