The effects of the Jenkyns Event on the radiation of Early Jurassic dinoflagellate cysts-Reference-Cited by-同舟云学术

The effects of the Jenkyns Event on the radiation of Early Jurassic dinoflagellate cysts

Published:2021 Issue:1 Volume:514 Page:13-30
ISSN:0305-8719
Container-title:Geological Society, London, Special Publications
language:en
Short-container-title:Geological Society, London, Special Publications

Author:

Correia Vânia F.¹²^ORCID,Riding James B.³^ORCID,Duarte Luís V.⁴^ORCID,Fernandes Paulo¹^ORCID,Pereira Zélia²^ORCID

Affiliation:

1. Centro de Investigação Marinha e Ambiental, Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal

2. LNEG, Rua da Amieira, 4465-965 S. Mamede de Infesta, Portugal

3. British Geological Survey, Keyworth, Nottingham NG12 5GG, UK

4. University of Coimbra, MARE – Marine and Environmental Sciences Centre and Department of Earth Sciences, Rua Sílvio Lima, 3030-790 Coimbra, Portugal

Abstract

AbstractThis contribution is an overview of the Early Jurassic dinoflagellate cysts of the Lusitanian Basin in Portugal, with particular emphasis on the effects of the Jenkyns Event (Toarcian Oceanic Anoxic Event) on the evolution of this planktonic group. We review and discuss data from 214 samples from six Lower Jurassic successions (upper Sinemurian to upper Toarcian) in the Lusitanian Basin. The late Pliensbachian radiation of dinoflagellate cysts was well recognized in this basin. The pre-Jenkyns Event interval is highly productive, with maximum abundance and species richness values. However, this palaeoenvironmental perturbation severely affected the evolution of this group for the remainder of the Early Jurassic. The prolonged recovery of the dinoflagellates in the Toarcian following the Jenkyns Event is not typical of the northern regions (Arctic and Boreal realms), where new species began to evolve earlier compared with southern European basins.

Publisher

Geological Society of London

Subject

Geology,Ocean Engineering,Water Science and Technology

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