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Miocene shallow-water limestones from Sao Nicolau (Cabo Verde) : Caribbean-type benthic fauna and time constraints for volcanism

Bernoulli, D. and Hottinger, L. and Spezzaferri, S. and Stille, P.. (2007) Miocene shallow-water limestones from Sao Nicolau (Cabo Verde) : Caribbean-type benthic fauna and time constraints for volcanism. Swiss Journal of Geosciences, Vol. 100. pp. 215-225.

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Official URL: http://edoc.unibas.ch/dok/A4998941

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Abstract

Shallow-water limestones of presumed Late Cretaceous and Eocene age, interbedded with basaltic lavas, were described by earlier authors from São Nicolau in the northwestern part of the Cabo Verde archipelago. If confirmed, these ages would imply late Mesozoic shallow-marine and subaerial volcanic activity in the Cabo Verde archipelago, and document a geological history very different from that known so far from other Cabo Verde Islands, from which no subaerial volcanic activity before the mid-Cenozoic is known. Our re-investigation of the foraminiferal fauna indicates a Late Miocene age for the presumed Late Cretaceous and Eocene limestones. The hypothesis of a long-lived hot spot, active by the Early Cretaceous, and of a major islandbuilding stage in the Cabo Verde Islands during this period, is therefore not supported by the present bio- or chronostratigraphic data.
Faculties and Departments:05 Faculty of Science > Departement Umweltwissenschaften > Geologie-Paläontologie > Tektonik (nn)
UniBasel Contributors:Bernoulli, Daniel
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Birkhäuser
ISSN:1661-8726
Note:Note: Zugleich als Sonderdruck erschienen -- Publication type according to Uni Basel Research Database: Journal article
Last Modified:22 Mar 2012 14:28
Deposited On:22 Mar 2012 14:01

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