Preuves de la discordance de l'Ordovicien supérieur dans la zone axiale des Pyrénées : exemple du dôme de la Garonne (Espagne,France) |
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| Authors: | Joaqu??n Garc??a-Sansegundo Jordi Gavaldá Juan Luis Alonso |
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| Institution: | 1. Departamento de Geolog??a, Universidad de Oviedo, c/Jesús Arias de Velasco, s/n. 33208 Oviedo, Espagne;2. Conselh Generau d''Aran, Vielha (Lleida), Espagne |
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| Abstract: | The geological mapping of the Garonne Dome had already shown an angular unconformity between the Upper Ordovician and the underlying series. This paper presents data from a nearby location, Planelh deth Pas Estret, southeast of the Garonne Dome, where the unconformity can be seen at outcrop scale. The unconformity angles amount to up to 20°. This unconformity is interpreted as a result of an extensional event of pre-Upper Ordovician age. To cite this article: J. Garc??a-Sansegundo et al., C. R. Geoscience 336 (2004). |
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| Keywords: | discordance Ordovicien supérieur Pyrénées tectonique hercynienne unconformity Upper Ordovician Pyrenees Hercynian structure |
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