West Antarctic Ice Sheet grounding events on the Ross sea outer continental shelf during the middle Miocene
Abstract New seismic^stratigraphic analysis of the Ross Sea continental shelf suggests that there were a at least five shelfwide grounding events of the West Antarctic Ice Sheet (WAIS) during the middle Miocene. Although the number of WAIS grounding events generally matches the number of extreme N 1...
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| Format: | Text |
| Language: | English |
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2003
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1077.5007 http://www.geol.lsu.edu/bart/bart/Bio_files/Chow%20and%20Bart%202003.pdf |
| Summary: | Abstract New seismic^stratigraphic analysis of the Ross Sea continental shelf suggests that there were a at least five shelfwide grounding events of the West Antarctic Ice Sheet (WAIS) during the middle Miocene. Although the number of WAIS grounding events generally matches the number of extreme N 18 O enrichments and eustatic lowstands, these results do not support the long-standing assumption that West Antarctica was substantially ice-free. Instead, seismicŝ tratigraphic evidence from the Ross Sea shelf documents waxing and waning of a well-developed WAIS in the marine environment at least on the Pacific sector of the West Antarctic continental shelf. ß |
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