Le Bassin lusitanien (Portugal) à l'Aptien supérieur–Albien : organisation séquentielle,proposition de corrélations, évolutionThe Lusitanian Basin (Portugal) during the late Aptian–Albian: sequential arrangement,proposal of correlations,evolution |
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Authors: | Jorge Dinis Jacques Rey Pierre-Charles de Graciansky |
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Affiliation: | 1. Departamento de Ciências da Terra, Universidade de Coimbra, 3000 Coimbra, Portugal;2. Laboratoire de dynamique des bassins sédimentaires, université Paul-Sabatier, 39, allées Jules-Guesde, 31062 Toulouse cedex, France;3. École nationale supérieure des mines de Paris, 60, bd Saint-Michel, 75272 Paris cedex 05, France |
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Abstract: | . Three transgressive–regressive 2nd-order cycles were identified in the Upper Aptian–Albian fluvial and marine deposits of the Lusitanian Basin. Its widespread nature, probably including eustatic origin, allows correlation between the southern package, with precise stratigraphic positioning, and the northern series with a poorly constrained age. The main unconformities can be related to the onset of an oceanic crust, in the western margin of Galicia during the Late Aptian, in the bay of Biscay during the Early Albian, and, to the northwest of the Galicia triple point, during the Middle to Late Albian transition, and, at the Albian–Cenomanian boundary, to a probable compressive event with Africa due to the rotation of Iberia. To cite this article: J. Dinis et al., C. R. Geoscience 334 (2002) 757–764. |
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Keywords: | eustacy tectonics Aptian Albian Lusitanian Basin Portugal Atlantic margin eustatisme tectonique Aptien Albien Bassin lusitanien Portugal marge atlantique |
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