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Milankovitch-scale palynological turnover across the Triassic-Jurassic transition at St. Audrie's Bay, SW UK

Abstract:

A high-resolution palynological study of the Triassic-Jurassic boundary in the St. Audrie's Bay section revealed a palynofloral transition interval with four pronounced spore peaks in the Lilstock Formation. Regular cyclic increases in palynomorph concentrations can be linked with periods of increased runoff, and correspond to the orbital eccentricity cycle. Spore peaks can be related to precession-induced variations in monsoon strength. An implication is that the initial carbon isotope excur...

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Publisher copy:
10.1144/0016-76492009-141

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Earth Sciences
Role:
Author
Journal:
Journal of the Geological Society
Volume:
167
Issue:
5
Pages:
877-888
Publication date:
2010-09-01
DOI:
ISSN:
0016-7649
Source identifiers:
385553
Language:
English
Pubs id:
pubs:385553
UUID:
uuid:8690871d-0446-4412-a2ab-eab26c636acd
Local pid:
pubs:385553
Deposit date:
2013-11-16

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