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Palaeoceanographic significance of new and revised palaeontological datings for the onset of Vigla Limestone sedimentation in the Ionian zone of Greece

Published online by Cambridge University Press:  01 November 1997

T. DANELIAN ,
P. DE WEVER  and
J. AZÉMA
T. DANELIAN
Affiliation:
Département de Géologie Sédimentaire, Université P. & M. Curie, Case 117-T 15-16-E4, 4, place Jussieu, 75252 Paris Cedex 05, France Present address: Department of Geology and Geophysics, The University of Edinburgh, West Mains Road, Edinburgh EH9 3JW, Scotland, UK
P. DE WEVER
Affiliation:
Département de Géologie Sédimentaire, Université P. & M. Curie, Case 117-T 15-16-E4, 4, place Jussieu, 75252 Paris Cedex 05, France Present address: Muséum National d'Histoire Naturelle, Laboratoire de Géologie, 43 rue de Buffon, 75005 Paris, France
J. AZÉMA
Affiliation:
Département de Géotectonique, Université P. & M. Curie, Case 129-T 26-E1, 4, place Jussieu, 75252 Paris Cedex 05, France
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Abstract

Radiolarian and calpionellid dating establish a significant sedimentary hiatus within a reduced pelagic sequence of the central part of the Ionian zone (western Greece). Bottom-current activity probably decreased during the Oxfordian, allowing encroachment of radiolarian-rich sediments onto a Jurassic high (at Kato Kouklessi), and then increased again during Kimmeridgian–Tithonian time. The onset of Vigla Limestone sedimentation is diachronous within the Ionian zone, spanning late Tithonian to various levels of early Berriasian time. This diachroneity can be explained by dispersal of fine-grained sediment by current activity.

Type
Research Article
Information
Geological Magazine , Volume 134 , Issue 6 , November 1997 , pp. 869 - 872
Copyright
© 1997 Cambridge University Press

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