News tagged with geochemical conditions
Banded rocks reveal early Earth conditions, changes
(PhysOrg.com) -- The strikingly banded rocks scattered across the upper Midwest and elsewhere throughout the world are actually ambassadors from the past, offering clues to the environment of the early Earth ...
Space & Earth / Earth Sciences
Oct 11, 2009 |
4.5 / 5 (17) |
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Search results for geochemical conditions
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 |
4.7 / 5 (7) |
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Geologists map prehistoric climate changes in Canada's Yukon Territory
Researchers at the University of Pittsburgh have joined an international group of scientists to study past climate changes in the Arctic. Comprising geologists from Pitt's Department of Geology and Planetary Science, the ...
Space & Earth / Earth Sciences
May 08, 2012 |
3.5 / 5 (2) |
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Earth's sister in the crosshairs
Earth’s sister is out there, somewhere, and scientists searching for planets that may support life believe they are closing in on finding just that.
Apr 20, 2012 |
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Rock sleuths: Researchers seek clues to atmospheric changes ahead of animal life
For more than a decade, scientists have dismissed claims that examining carbon-rich rocks could yield clues to the atmospheric and oceanic conditions on Earth hundreds of millions of years ago, but now researchers ...
Space & Earth / Earth Sciences
Mar 20, 2012 |
5 / 5 (1) |
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New study queries interactions of metal-reducing bacteria with plutonium oxide
(PhysOrg.com) -- Recent work by scientists at Pacific Northwest National Laboratory has shed new light on the perplexing environmental chemistry of plutonium. They demonstrated that under anaerobic, or oxygen-free, ...
Mar 19, 2012 |
5 / 5 (1) |
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Hazy shades of life on early Earth
A 'see-sawing' atmosphere over 2.5 billion years ago preceded the oxygenation of our planet and the development of complex life on Earth, a new study has shown.
Space & Earth / Earth Sciences
Mar 18, 2012 |
4.7 / 5 (3) |
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Study links past changes in monsoon to major shifts in Indian civilizations
(PhysOrg.com) -- A fundamental shift in the Indian monsoon has occurred over the last few millennia, from a steady humid monsoon that favored lush vegetation to extended periods of drought, reports a new study ...
Space & Earth / Earth Sciences
Mar 15, 2012 |
4.8 / 5 (4) |
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An avalanche of planning for multi-national Arctic field campaigns
The U.S. GEOTRACES Science Steering Committee (SSC) has established a U.S. Arctic GEOTRACES initiative to help characterize and understand regional biogeochemical changes associated with rapid climate change. ...
Space & Earth / Earth Sciences
Mar 14, 2012 |
not rated yet |
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Taking stock of subsurface microbial communities at Hanford
Taking a census provides valuable information about residents' ages, employment, makeup, living conditions, etc. Most censuses are taken door to door or by mail. But if the community lives in areas that are ...
Mar 13, 2012 |
4.5 / 5 (2) |
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Mechanism for Burgess Shale-type preservation
The Burgess Shale of British Columbia is arguably the most important fossil deposit in the world, providing an astounding record of the Cambrian "Explosion," the rapid flowering of complex life from single-celled ancestors. ...
Space & Earth / Earth Sciences
Mar 07, 2012 |
5 / 5 (2) |
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List of search results for geochemical conditions
