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Book Chapter

Late Ordovician zooplankton maps and the climate of the Early Palaeozoic Icehouse

By
Thijs R. A. Vandenbroucke
Thijs R. A. Vandenbroucke
Géosystèmes, UMR 8217 du CNRS, Université Lille 1, Avenue Paul Langevin, bâtiment SN5, 59655 Villeneuve d'Ascq cedex, France
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Howard A. Armstrong
Howard A. Armstrong
Palaeozoic Environments Group, Department of Earth Sciences, Durham University, Science Labs, Durham DH1 3LE, UK
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Mark Williams
Mark Williams
Department of Geology, University of Leicester, University Road, Leicester LE1 7RH, UK
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Florentin Paris
Florentin Paris
Géosciences, Université de Rennes I, UMR 6118 du CNRS, Campus de Beaulieu, 35042 Rennes-cedex, France
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Koen Sabbe
Koen Sabbe
Protistology and Aquatic Ecology, Department of Biology, Ghent University, Krijgslaan 281-S8, 9000 Ghent, Belgium
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Jan A. Zalasiewicz
Jan A. Zalasiewicz
Department of Geology, University of Leicester, University Road, Leicester LE1 7RH, UK
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Published:
January 01, 2013

Abstract

Chitinozoans and graptolites are the main components of preserved Ordovician zooplankton. As with much of the modern plankton, the ‘first-order’ species distributions of Ordovician plankton reflect water masses defined on the basis of sea surface temperatures. For ‘time slices’ of less than a few million years, zooplankton distribution patterns can be used to infer latitudinal sea surface temperature gradients, key palaeoceanographical boundaries and the position of Ordovician climate belts. Here, using two Late Ordovician time intervals – the early Sandbian and Hirnantian – we review how zooplankton distribution patterns identify Late Ordovician cooling and reflect the development of severe icehouse conditions.

Supplementary material:

Additional information on methods and material is available at: http://www.geolsoc.org.uk/SUP18670

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Contents

Geological Society, London, Memoirs

Early Palaeozoic Biogeography and Palaeogeography

D. A. T. Harper
D. A. T. Harper
Durham University, UK
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T. Servais
T. Servais
CNRS–Université de Lille 1, France
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Geological Society of London
Volume
38
ISBN electronic:
9781862396425
Publication date:
January 01, 2013

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