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Late Cretaceous extinction patterns in Antarctica

Crame, J.A.; Lomas, S.A.; Pirrie, D.; Luther, A.. 1996 Late Cretaceous extinction patterns in Antarctica. Journal of the Geological Society, 153 (4). 503-506. 10.1144/gsjgs.153.4.0503

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Abstract/Summary

New correlations of marine clastic sedimentary rocks exposed within the James Ross Basin, Antarctica have shown that the mid-to late Cretaceous succession is in excess of 5 km thick. Plotting the ranges of the principal molluscan macrofossils against the revised stratigaphy indicates that inoceramid bivalves are totally absent, and dimitobelid belemnites extremely rare, throughout an extensive 1400 m thick Maastrichtian succession. These early extinction patterns are interpreted to be due to both a regional shallowing event and a pronounced phase of high-latitude, Campanian–Maastrichtian cooling. Cool polar bottom waters may have been forming by as early as mid- to late Campanian times.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1144/gsjgs.153.4.0503
Programmes: BAS Programmes > Pre 2000 programme
ISSN: 0016-7649
Additional Keywords: Antarctica, K-T boundary, Inoceramidae, belemnites, extinction
Date made live: 02 Nov 2016 09:25 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/515009

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