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title of the reference :
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Recent tectonics in Northern Tunisia
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Publication Date:
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1993
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Author :
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Rebai Samira
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Catalogue type :
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Livre
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Catalogue reference :
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Vol.VII, N°2 (ITA) Ann. Tectonicae Vol.VII, N°2 Recent tectonics in Northern Tunisia coexistence of compressive and extensional structures. " A field study has been carried out within the eastern part of the north Maghrebian mountain ranges in Northern Tunisia (Teboursouk-Medjez Al Bab area), in order to clarify (at regional scale)the relaioships between compression and extension during the Quaternary. In fact, this region is caracterized by active tectonics, associating both NW-SE compressive (NE-SW thrusts and folds)and NE-SW extensional (NW-SE normal faults)structures accompanied by NW-SE right lateral strike-slip faults. These different structures are all intricately imbricated and can be observed at different scales. This general setting implies an important local variation of the stress stade : for instance, this passes from a NW-SE compression on the south-western flank of the El Cheid mountains fault zone NE-SW extension at the Gafour-El Aroussa basin. These results are in good agreement with the roughly north-south convergence between Africa and Eurasia. This regional example recalls that evidence on the scale of Tunisia between the ""graben zonr"" of the central Atlas and northern Tunisia with compressional tectonics." bibliogr. compression ; faille ; contrainte ; Quaternaire ; tectonique récente ; extension ; Tunisie ; Tunisie Nord Occidentale ; Téboursouk ; Mejez el Bab Rebai Samira Tectonique
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Indexation decimale :
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Tectonique
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Keywords :
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compression ; faille ; contrainte ; Quaternaire ; tectonique récente ; extension ; Tunisie ; Tunisie Nord Occidentale ; Téboursouk ; Mejez el Bab
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Summary :
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" A field study has been carried out within the eastern part of the north Maghrebian mountain ranges in Northern Tunisia (Teboursouk-Medjez Al Bab area), in order to clarify (at regional scale)the relaioships between compression and extension during the Quaternary. In fact, this region is caracterized by active tectonics, associating both NW-SE compressive (NE-SW thrusts and folds)and NE-SW extensional (NW-SE normal faults)structures accompanied by NW-SE right lateral strike-slip faults. These different structures are all intricately imbricated and can be observed at different scales. This general setting implies an important local variation of the stress stade : for instance, this passes from a NW-SE compression on the south-western flank of the El Cheid mountains fault zone NE-SW extension at the Gafour-El Aroussa basin. These results are in good agreement with the roughly north-south convergence between Africa and Eurasia. This regional example recalls that evidence on the scale of Tunisia between the ""graben zonr"" of the central Atlas and northern Tunisia with compressional tectonics."
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Exemplaries :
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TU1764
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