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L’océanisation :

L’océanisation :. Manteau lithosphérique. Sédiments anté-rift. Croûte continentale. 0. Bloc basculé. Faille normale. 20. 40. Asthénosphère. Sédiments syn-rift. I. Lithosphère continentale :. 0. 20. 40. Profondeur (en km). II. Stade fossé d’effondrement / rift : les Afars.

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L’océanisation :

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  1. L’océanisation : Manteau lithosphérique Sédiments anté-rift Croûte continentale 0 Bloc basculé Faille normale 20 40 Asthénosphère Sédiments syn-rift I. Lithosphère continentale : 0 20 40 Profondeur (en km) II. Stade fossé d’effondrement / rift :les Afars.

  2. Sédiments syn-rift 0 Croûte océanique 20 40 Sédiments post-rift 0 Dorsale Océan 20 Marge passive Lithosphère océanique Lithosphère continentale 40 La formation de la lithosphère océanique III. Stade jeune océan : la mer Rouge. Fusion partielle III. Stade océan : l’Atlantique.

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