Massive corals in Paleocene siliciclastic sediments of Chubut (Argentina) |
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| Authors: | Wolfgang Kiessling Eugenio Aragón Roberto Scasso Martin Aberhan Jürgen Kriwet Francisco Medina Diego Fracchia |
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| Affiliation: | (1) Institut für Paläontologie, Museum für Naturkunde, Humboldt-Universität Berlin, Invalidenstr. 43, D-10115 Berlin, Germany;(2) Centro de Investigaciones Geológicas, Universidad Nacional de La Plata 1 No 644, 1900 La Plata, Argentina;(3) Departamento de Ciencias Geológicas, FCEN, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, 1° Piso, 1428 Buenos Aires, Argentina;(4) Department für Geo- und Umweltwissenschaften, Ludwig-Maximilians-Universität München, Richard-Wagner-Str. 10, D-80333 München, Germany;(5) Instituto de Geología y Mineria, Universidad Nacional de Jujuy, C. Correo 258, 4600 S.S. de Jujuy, Argentina |
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| Abstract: | A horizon with large, massive corals in growth position was discovered in the Paleocene, probably upper Danian, part of the Maastrichtian–Paleocene Lefipán Formation of Chubut (Patagonia, Argentina). All corals belong to one species, the cosmopolitan Haimesiastraea conferta Vaughan, which survived the end-Cretaceous mass extinction. The occurrence of massive corals at this site is exceptional both because of the siliciclastic depositional regime and because of the high palaeolatitude setting. An unusual autecology of this coral and strongly reduced sedimentation rates, were probably the prerequisites for coral growth, but a link to palaeoclimate is less likely. |
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| Keywords: | Bioerosion Corals Ecology Mass extinction Paleocene Siliciclastics |
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