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Chapitre D'ouvrage Année : 2022

The Continental Margins of the Gulf of Aden

Sylvie Leroy

Résumé

The Gulf of Aden is an oceanic basin that extends for about 1,400 km between the Red Sea and the Indian Ocean. It is the result of an Oligo-Miocene continental rifting process that led to the separation of the Arabian and Somali plates. The continental domain is structured by a succession of tilted blocks. For the conjugate margins of the central Gulf of Aden, crustal thinning is dominated by north-verging normal faults. In the central Gulf of Aden, the formation of the ocean-continent transition is associated with significant volcanism related to the increasing westward influence of the Afar plume. In the eastern Gulf of Aden, the basement of the exhumed domain is affected by local volcanism. The oceanic domain is characterized by steady-state oceanic crust, emplaced around ~17 Myr. The oceanic crust formation occurs during a period of intense magmatic production that localizes deformation and creates the stable oceanic ridge.
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Dates et versions

hal-04215091 , version 1 (12-10-2023)

Licence

Paternité - Pas d'utilisation commerciale

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Sylvie Leroy, Chloé Nonn. The Continental Margins of the Gulf of Aden. Continental Rifted Margins 2: Case Examples, John Wiley & Sons, Inc., pp.93-106, 2022, ⟨10.1002/9781119986959.ch4⟩. ⟨hal-04215091⟩
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