(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 oxygen spike marks ...
Earth Sciences
Oct 29, 2009
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(Phys.org) —A team of geoscientists from the U.K. and the U.S. has found that measuring the contour of hilly regions using a laser scanner can reveal aspects of the geographical history that led to its formation. In their ...
Incision of canyons into mountains is often interpreted by geoscientists as a proxy for surface uplift of the surroundings by geodynamic and tectonic processes. However, another possible cause for incision is climate change. ...
Earth Sciences
Aug 16, 2013
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Carbon capture and storage has been heralded as a new technology for reducing greenhouse gas emissions. In an effort to help slow climate change, human-produced carbon dioxide (CO2) is captured at point-source emitters like ...
Environment
Jul 8, 2013
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(Phys.org) —The North Sea oil and gas industry's pursuit of new oil reserves has contributed to a greater understanding of where life exists on Earth and may even help us look for life on other planets.
Earth Sciences
May 20, 2013
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Analyses of the longest continental sediment core ever collected in the Arctic, recently completed by an international team led by Julie Brigham-Grette of the University of Massachusetts Amherst, provide "absolutely new knowledge" ...
Earth Sciences
May 9, 2013
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Geoscientist Michele Cooke and colleagues at the University of Massachusetts Amherst take an uncommon, "Earth is lazy" approach to modeling fault development in the crust that is providing new insights into how faults grow. ...
Earth Sciences
Apr 3, 2013
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The islands Reunion and Mauritius, both well-known tourist destinations, are hiding a micro-continent, which has now been discovered. The continent fragment known as Mauritia detached about 60 million years ago while Madagascar ...
Earth Sciences
Feb 24, 2013
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(Phys.org)—Princeton geoscientists Christopher Harig and Frederik Simons have been applying new methods to study the amount of ice melt in the Greenland ice sheet. They report in a paper published in the Proceedings of ...
On a time scale of tens to hundreds of millions of years, the geomagnetic field may be influenced by currents in the mantle. The frequent polarity reversals of Earth's magnetic field can also be connected with processes in ...
Earth Sciences
Jul 29, 2012
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