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ravity. Traditionally, weathering of rocks and minerals and the transportation of weathered products in cold climates has been regarded as being very slow or non-existent. Results of recent research by Dixon et al. have shown the contrary however. These researchers have shown that measurable weathering of rocks in an Arctic environment has occurred since the disappearance of glacial ice some 10,000 years ago. They recognize the importance of sulfuric acids derived from local bedrock in rock weathering as well as in the transportation of weathering products to form a variety of chemical coatings on rocks in the landscape.

Multivariate hierarchical analyses of Miocene mollusk assemblages of Europe: Paleogeographic, paleoecological, and biostratigraphic implications.
Michal Kowalewski et al. Department of Geological Sciences, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA. Pages 239-256.
In the Middle Miocene, 15 million years ago, large areas of Europe were flooded by shallow seas, including the Boreal Province in the north and the partly isolated bays and seaways of the Paratethys Province in the southeastern and central parts of the continent. Abundant fossil shellfish, found in many regions, provide an intriguing testament to diverse marine ecosystems that thrived during Miocene times in Europe. In an international project, aimed at rigorously exploring diversity and ecology of the Miocene marine life, a total of over 8,000 specimens of fossil shellfish were collected from the Netherlands, Belgium, Germany, Poland, Austria, and Hungary. Computer-intensive statistical analyses show that the diversity of the fossil shellfish was much higher in the north in the Boreal Province (the Netherlands, Belgium, Germany) than in the Paratethys (Austria, Hungary, Poland, Romania). This is consistent with the general tendency of partly isolated seaways and bays to display impoverished fauna (perhaps due to geographic bar
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Contact: Ann Cairns
acairns@geosociety.org
303-357-1056
Geological Society of America
8-Feb-2002


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Related biology news :

1. Other highlights in the February 18 issue of JNCI
2. JCI table of contents, 16 February 2004
3. USGS February science picks
4. Story tips from the Department of Energys Oak Ridge National Laboratory, February 2004
5. Other highlights in the February 4 issue of JNCI
6. JCI table of contents, February 2, 2004
7. Research news from Tufts University, Friedman School of Nutrition Science and Policy: February 2004
8. Story tips from the Department of Energys Oak Ridge National Laboratory February 2003
9. Science picks -- leads, feeds and story seeds (February 2003)
10. NIH and NSF team up to link math and biology at February 12 Symposium
11. Tips from the Journals of the American Society for Microbiology: February 2002

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