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title of the reference :
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Tethyan margins in space and time.
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Publication Date:
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1991
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Author :
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Stampfli Gérard, Marcoux J., Baud Aymon, Channell J.E.T., Winterer, Jansa L.F.
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Catalogue type :
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Livre
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Catalogue reference :
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(NLD) Palaeogeogr., Palaeoclimatol., Palaeoecol. Tethyan margins in space and time. 28th Int. Geol. Congr. Rifting processes, leading to sea-floor spreading, are characterized by a sequence of events transtensive phase of extension with syn-rift volcanism: simple shear extension accompanied by lithospheric thinning and asthenospheric up-welling and thermal uplift of the rift shoulder and asymmetric volcanism. The simple shear model of extension leads to an asymmetric model of passive margin: a lower plate tilted block margin and an upper plate flexural, ramp-like margin. Both will be affected by thermal contraction and subsidence, staring soon after sea-floor spreading. Based on these actualistic models Tethyan margins are classified as one type of the other.
Téthys ; Marge continentale passive ; Formation rift ; Primaire ; Extension tectonique ; Asthénosphère ; Upwelling ; Modèle ; Phase transtension ; Tunisie ; Iran ; Inde ; Oman Winterer Jansa L.F. Marcoux J. Baud Aymon Channell J.E.T. Stampfli Gérard Tectonique
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Indexation decimale :
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Tectonique
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Keywords :
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Téthys ; Marge continentale passive ; Formation rift ; Primaire ; Extension tectonique ; Asthénosphère ; Upwelling ; Modèle ; Phase transtension ; Tunisie ; Iran ; Inde ; Oman
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Summary :
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Rifting processes, leading to sea-floor spreading, are characterized by a sequence of events transtensive phase of extension with syn-rift volcanism: simple shear extension accompanied by lithospheric thinning and asthenospheric up-welling and thermal uplift of the rift shoulder and asymmetric volcanism. The simple shear model of extension leads to an asymmetric model of passive margin: a lower plate tilted block margin and an upper plate flexural, ramp-like margin. Both will be affected by thermal contraction and subsidence, staring soon after sea-floor spreading. Based on these actualistic models Tethyan margins are classified as one type of the other.
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