File:Briançonnais modèles 7F.jpg
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Summary
| Description |
Français : Septfontaine M. (1995) : Eclogae geol. Helv. 88/3, 553-576.
Blocs diagrammes et profils palinspastiques des Préalpes médianes "dépliées" au Jurassique (Bajocien et Callovien). Ce modèle est valable pour le Chablais français et la Romandie. Il est aussi applicable dans les Hautes Alpes française (Briançon, lac de l'Ascension etc.). La "Brèche du Télégraphe" est située dans une zone équivalente à la zone Château-dOche/Corbeyrier, en transpression à la fin du Dogger. Le profil palinspastique présenté remplace celui de Baud & Septfontaine (1980) qui ne répond plus aux données de terrain et ne devrait pas être cité dans les publications sur les Préalpes !
English: Septfontaine M. (1995) : Eclogae geol. Helv. 88/3, 553-576.
9a. Block diagram and palinspastic profile of eastern Chablais (France) during Bajocian times, showing relations between paleostructures at depth and superficial relief evolution. 9b. Same area during late Callovian times. Compressive movements trigger the uplift of the central part of the Briançonnais carbonate platform (Bise-Tour d'Aï zone) with emersion and erosion in the Château d'Oche zone. The middle Jurassic Mytilus formation (stippled) is strongly eroded by karstic dissolution. Along the northern coast, rivers brought coarse sediments coming from middle liassic outcrops of the Bise-Tour d'Aï zone. This paleotectonic event has been previously called the Callovo-Oxfordian Phase by Septfontaine (1984). The new palinspastic profile replaces the old model of Baud & Septfontaine (1980) which is now obsolete. |
| Date | |
| Source | Own work |
| Author | Septfontaine |
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 02:47, 4 October 2011 | 1,677 × 1,896 (385 KB) | Septfontaine |
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