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Deccan flood basalts at the Cretaceous/Tertiary boundary? |
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| Authors: | Vincent Courtillot Jean Besse Didier Vandamme Raymond Montigny Jean-Jacques Jaeger Henri Cappetta |
| Affiliation: | 1Laboratoire de Paléomagnétisme et Géodynamique, Institut de Physique du Globe, Place Jussieu, 75005 Paris France 2Laboratoire de Géochimie, Institut de Physique du Globe, Rue Descartes, Strasbourg France 3Laboratoire de Paléontologie des Vertébrés, UniversitéP. et M. Curie, Place Jussieu, 75252 Paris France 4Institut des Sciences de l'Evolution, Universitédes Sciences et Techniques du Languedoc, Place Bataillon, 34060 Montpellier CedexFrance |
| Abstract: | Joint consideration of new paleomagnetic, paleontological and geochronological data from the Deccan continental flood basalts in India and critical discussion of earlier results lead us to suggest that volcanic activity may have lasted less than 1 Ma, thus possibly ranking as one of the largest volcanic catastrophes in the last 200 Ma. Available data are best satisfied if volcanism spanned the Cretaceous/Tertiary boundary, followed shortly afterwards by rifting of the Arabian Sea. These results point out the need for further work which may help in choosing between “external” and “internal” models of the Cretaceous/Tertiary boundary events. |
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