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GEOLOGY starts 2013 with 25 new articles posted online ahead of print
Date:1/30/2013

target="_Blank"href="http://geology.gsapubs.org/content/early/recent">http://geology.gsapubs.org/content/early/recent. All abstracts are open-access at http://geology.gsapubs.org/; representatives of the media may obtain complimentary GEOLOGY articles by contacting Kea Giles at the address above.

Please discuss articles of interest with the authors before publishing stories on their work, and please make reference to GEOLOGY in articles published. Contact Kea Giles for additional information or assistance.

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Earth is (mostly) flat: Apportionment of the flux of continental sediment over millennial time scales
Jane K. Willenbring et al., Dept. of Earth and Environmental Science, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA, and National Center for Earth-Surface Dynamics, 2 Third Ave. SE, Minneapolis, Minnesota 55414, USA. Posted online 4 Jan. 2013; http://dx.doi.org/10.1130/G33918.1.

Although churning smokestacks and gasoline-burning vehicles are contributing to greenhouse gas emissions, some natural processes do the reverse by pulling carbon dioxide out of the atmosphere. One of these processes is chemical weathering, which occurs when rock turns into soil. Carbon dioxide molecules and rain combine and dissolve rocks; the weathering products eventually become sequestered in the ocean. For years, geologists believed that mountains, due to their steep slopes and high rates of erosion, were large contributors to this "carbon drawdown" effect. Here, Jane K. Willenbring and colleagues suggest that mountains do not play a significant role in this activity. They analyzed published cosmogenic nuclide-derived erosion rat
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Contact: Kea Giles
kgiles@geosociety.org
303-357-1057
Geological Society of America
Source:Eurekalert  

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