%0 Journal Article
%A Arias Fernández, María Del Carmen
%T Palaeoceanography and biogeography in the Early Jurassic Panthalassaand Tethys Oceans
%D 2008
%@ 1342-937X
%U https://hdl.handle.net/20.500.14352/49550
%X A first conceptual palaeoceanographic model for the Early Jurassic Panthalassa and Tethys Oceans is outlined in the present paper. The newpalaeoceanographic model uses fundamental physic–oceanographic principles known from the modern world and a global palaeogeographicreconstruction for the Early Jurassic to examine the long-term response of the Panthalassic and Tethyan fossil invertebrate faunas to the proposedsurface ocean circulation. Analysis of palaeobiogeographical data (ostracods, ammonites, brachiopods and bivalves) has enabled circulationchanges to be reconstructed over the studied period in some detail. Panthalassic circulation pattern shows an almost hemispherical symmetricpattern, with the development of the two large subtropical gyres that rotates clockwise in the northern hemisphere and anti-clockwise in thesouthern hemisphere. Surface circulation in the Tethyan Ocean is dominated by monsoonal westerly-directed equatorial surface currents thatreached its western corner and droved them off to the north, along the northern side of the Tethys Ocean, during summer and in opposite directionduring the winter.
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