Late Cretaceous winter sea ice in Antarctica?
Vanessa C. Bowman et al., School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK; firstname.lastname@example.org or email@example.com. Co-authors: Jane E. Francis, and James B. Riding. Posted online ahead of print 16 Oct. 2013; http://dx.doi.org/10.1130/G34891.1.
Scientists have found evidence of sea ice at a time in the geological past when forests covered Antarctica and the climate was thought to be very warm. Geologists from the University of Leeds, UK, and the British Geological Survey, supported by the British Antarctic Survey, undertook fieldwork and laboratory analysis over a period of four years. They interpreted the record of fossil marine plankton in Cretaceous sediments (70 million years ago) as indicators of sea ice formation and retreat. This implies that ice sheets may have existed on Antarctica under a high CO2 climate. These results help us reconstruct the history of the Antarctic ice sheet in order to understand how the ice sheet is responding to climate warming today and how it may behave in the future.
A re-evaluation of the Pleistocene behavior of the Scoresby Sund sector of the Greenland Ice Sheet
Jan Sverre Laberg et al., Department of Geology, University of Troms, N-9037 Troms, Norway; firstname.lastname@example.org. Co-authors: Matthias Forwick, Katrine Husum, and Tove Nielsen. Posted online ahead of print 16 Oct. 2013; http://dx.doi.org/10.1130/G34784.1.
The Greenland Ice Sheet is the largest ice sheet outside of Antarctica. The amount of water stored equals seven meters of global sea-level rise so that the fu
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Geological Society of America