Correlating tectono-stratigraphic events along the East African Margin: udCombining high-resolution plate kinematic models, platescale stress udsimulations and regional sedimentary basin fill histories

摘要

The Northwest Indian Ocean and the passive continental margins of East Africa and West Madagascar formed during the breakup of Gondwana in the Mid-Jurassic. It was during this time that the marginal sedimentary basins, currently attracting attention for hydrocarbon exploration, were formed. ududSince initial rifting, the development of the Indian Ocean has been punctuated by a number of boundary relocations. As a result of this complicated history, it has proven difficult to reconcile the area into a coherent tectonic model. A new high-resolution plate kinematic model of the opening of the NW Indian Ocean has been developed using finite rotation poles generated by a mixture of visual fitting and iterative joint inversion of magnetic isochron and fracture zone data [2,3]. The model is correlated with the tectono-stratigraphy and subsidence history of the sedimentary basins. It will also be used to predict and then quantify the regional stress field of the African plate at important tectonic stages.ud