Universidad Complutense de Madrid
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Pliensbachian–Toarcian ostracod biogeography in NW Europe: Evidence for water mass structure evolution

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Arias Fernández, María del Carmen (2007) Pliensbachian–Toarcian ostracod biogeography in NW Europe: Evidence for water mass structure evolution. Palaeogeography, palaeoclimatology, palaeoecology (251). pp. 398-421. ISSN 0031-0182

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Resumen

This paper examines the role played by palaeoceanographic and climatic conditions on the palaeobiogeography of the
Pliensbachian–Toarcian ostracods (Early Jurassic) in the European Epicontinental Sea (EES). The influence of the
palaeogeography, ocean currents and sea level, temperature and salinity variations on ostracod abundance, diversity and migration
patterns is reconstructed. Ostracod migration follows an anticlockwise circulation in the eastern side of the EES, with a leading
northeast–southwest movement, and the frequent arrival of Tethyan faunas into the central and western parts of the EES during the
Pliensbachian. A three-fold classification of water masses based on salinity, temperature, lithological and fossil data is proposed.
The repeated inflow of Tethyan ostracods into the EES ended by the earliest Toarcian. This ostracod event is related to the opening
of the Hispanic Corridor and to the reorganization of the surface and deep circulations that may have generated a cold episode at the
beginning of the Toarcian.


Tipo de documento:Artículo
Palabras clave:Ostracod; Palaeobiogeography; Pliensbachian–Toarcian boundary; Water masses; Deep-water circulation; European Epicontinental Sea; Hispanic Corridor; Palaeoclimatology
Materias:Ciencias > Geología > Paleontología
Código ID:26707
Depositado:15 Sep 2014 07:36
Última Modificación:11 Dic 2018 08:42

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