News tagged with ancient oceans
Thawing permafrost 50 million years ago led to extreme global warming events
In a new study reported in Nature, climate scientist Rob DeConto of the University of Massachusetts Amherst and colleagues elsewhere propose a simple new mechanism to explain the source of carbon that fed a ...
Space & Earth / Earth Sciences
Apr 04, 2012 |
4.3 / 5 (28) |
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New map reveals giant fjords beneath East Antarctic ice sheet
Scientists from the U.S., U.K. and Australia have used ice-penetrating radar to create the first high- resolution topographic map of one of the last uncharted regions of Earth, the Aurora Subglacial Basin, ...
Space & Earth / Earth Sciences
Jun 01, 2011 |
not rated yet |
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New study indicates an ancient ocean may have covered one-third of Mars
A vast ocean likely covered one-third of the surface of Mars some 3.5 billion years ago, according to a new study conducted by University of Colorado at Boulder scientists.
Space & Earth / Earth Sciences
Jun 13, 2010 |
4.8 / 5 (26) |
4
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New picture of ancient ocean chemistry argues for chemically layered water
A research team led by biogeochemists at the University of California, Riverside has developed a detailed and dynamic three-dimensional model of Earth's early ocean chemistry that can significantly advance ...
Space & Earth / Earth Sciences
Feb 11, 2010 |
5 / 5 (3) |
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Study: Animals populated Madagascar by rafting there
How did the lemurs, flying foxes and narrow-striped mongooses get to the large, isolated island of Madagascar sometime after 65 million years ago?
Other Sciences / Archaeology & Fossils
Jan 20, 2010 |
4.5 / 5 (2) |
3
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Earth's early ocean cooled more than a billion years earlier than thought (w/ Video)
(PhysOrg.com) -- The scalding-hot sea that supposedly covered the early Earth may in fact never have existed, according to a new study by Stanford University researchers who analyzed isotope ratios in 3.4 ...
Space & Earth / Earth Sciences
Nov 11, 2009 |
4.3 / 5 (12) |
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Ancient oceans offer new insight into the origins of animal life
(PhysOrg.com) -- Analysis of a rock type found only in the world's oldest oceans has shed new light on how large animals first got a foothold on the Earth.
Space & Earth / Earth Sciences
Sep 09, 2009 |
4.4 / 5 (10) |
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Meteorite bombardment may have made Earth more habitable
(PhysOrg.com) -- Large bombardments of meteorites approximately four billion years ago could have helped to make the early Earth and Mars more habitable for life by modifying their atmospheres, suggests the ...
Space & Earth / Earth Sciences
Jun 01, 2009 |
4.3 / 5 (7) |
3
Fossil raindrop impressions imply greenhouse gases loaded early Earth's atmosphere
In ancient Earth history, the sun burned as much as 30 percent dimmer than it does now. Theoretically that should have encased the planet in ice, but there is geologic evidence for rivers and ocean sediments ...
Space & Earth / Earth Sciences
Mar 28, 2012 |
not rated yet |
4
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Mars Express radar gives strong evidence for former Mars ocean
(PhysOrg.com) -- ESA's Mars Express has returned strong evidence for an ocean once covering part of Mars. Using radar, it has detected sediments reminiscent of an ocean floor within the boundaries of previously ...
Space & Earth / Space Exploration
Feb 07, 2012 |
4.3 / 5 (7) |
3
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Research group finds ancient deep sea mud volcano as possible site for origin of life
(PhysOrg.com) -- An international consortium of scientists and researchers has been studying some ancient rocks found on the southwestern coast of Greenland. They believe the rocks were once part of a deep ...
Space & Earth / Earth Sciences
Oct 18, 2011 |
4.4 / 5 (5) |
2
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New technique unlocks secrets of ancient ocean
Earth's largest mass extinction event, the end-Permian mass extinction, occurred some 252 million years ago. An estimated 90 percent of Earth's marine life was eradicated. To better understand the cause of ...
Space & Earth / Earth Sciences
Oct 11, 2011 |
4.8 / 5 (10) |
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Reservoirs of ancient lava shaped Earth
Geological history has periodically featured giant lava eruptions that coat large swaths of land or ocean floor with basaltic lava, which hardens into rock formations called flood basalt. New research from Matthew Jackson ...
Space & Earth / Earth Sciences
Jul 27, 2011 |
4.7 / 5 (6) |
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Plankton key to origin of Earth's first breathable atmosphere
Researchers studying the origin of Earth's first breathable atmosphere have zeroed in on the major role played by some very unassuming creatures: plankton.
Space & Earth / Earth Sciences
Feb 21, 2011 |
4 / 5 (5) |
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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 |
5 / 5 (3) |
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