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Mystery of isotope separation in lava is solved
Physics    Share    Share on FacebookTwitterShare on LinkedinE-mail article
Different isotopes of an element behave almost identically, but surprisingly, within matter that is at uneven temperature, such as magma that is slowly solidifying, heavier isotopes diffuse faster than lighter ones. In Physical Review Letters, a team of physicists and earth scientists now explains why. Their experiments and computer simulations suggest that the heavier molecules and atoms use their slightly larger momentum to push past the light-weights when moving from hot regions to colder ones. The results may give new insights into the physics of magma and the rocks that form from it. More

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Reminder: Development survey
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Please remember to enter your opinions on member benefits provided by the Geochemical Society — take the survey. The survey will close on Thursday, Feb. 23.

Upcoming geochemistry related conferences
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2012 Ocean Sciences Meeting, Feb. 20-24, Salt Lake City
XIV Experimental Mineralogy, Petrology and Geochemistry March, 4-7, Kiel, Germany
The Minerals Metals & Materials Society March, 11-15, Orlando
43rd Lunar and Planetary Science ConferenceMarch 19-23, The Woodlands, Texas
243rd American Chemical Society National Meeting, 25-29 March, San Diego

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Rare Martian meteorite given to science
BBC News    Share    Share on FacebookTwitterShare on LinkedinE-mail article
The Natural History Museum in London has acquired its largest Martian meteorite, which could hold new clues to life on Mars. More

Unearthing Antarctica's mysterious mountains
EARTH Magazine    Share    Share on FacebookTwitterShare on LinkedinE-mail article
In 1958, geologists discovered a mountain range buried more than a kilometer beneath the East Antarctica Ice Sheet. For more than half a century, the origins of the Gamburtsev Subglacial Mountains have proven to be a geological puzzle, but a new study may have finally solved the enigma, and simultaneously given geologists a new understanding of mountain-building processes. More

New volcano watch center opens in Menlo Park, Calif.
InMenlo    Share    Share on FacebookTwitterShare on LinkedinE-mail article
The U.S. Geological Survey has opened the California Volcano Observatory at its headquarters in Menlo Park with the purpose of increasing awareness of and resiliency to volcano threats in California. More

Darwin the geologist
Scientific American    Share    Share on FacebookTwitterShare on LinkedinE-mail article
Darwin today is mostly associated with terms like natural selection and evolution, but his first scientific achievements and publications were dealing — even against his own preconceptions — with geology. More

Palaeozoic landscapes shaped by plant evolution
Nature Geoscience    Share    Share on FacebookTwitterShare on LinkedinE-mail article
Fluvial landscapes diversified markedly over the 250 million years between the Cambrian and Pennsylvanian periods. The diversification occurred in tandem with the evolution of vascular plants and expanding vegetation cover. In the absence of widespread vegetation, landscapes during the Cambrian and Ordovican periods were dominated by rivers with wide sand-beds and aeolian tracts. More

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