ABSTRACT

The Pangean depositional mega-sequence resulted from the specific environmental conditions during the mass accumulation of Pangea. Generally, the succession was initiated in the Late Carboniferous and extended to the Middle or Late Triassic. Deposits of the Pangean mega-sequence are distributed fairly ubiquiously on both Gondwana and Laurasia. The Malagassy Trough formed a roughly north-northeast trending incision into the Tethyan margin of Gondwana which progressively separated Afro-Arabia from Madagascar-India. This major rift system which was initiated in the Late Palaeozoic remained active until the Middle Triassic extended from about Lake Nyasa in southwestern Tanzania to the southern rim of the Arabian peninsula and to the Salt Range in northern Pakistan. It incorporated the various Karoo basins in Tanzania, southeastern Kenya and the Ogaden, Karoo equivalent basins of western Madagascar, Permo-Triassic basins of south Oman and Yemen and the Permian to Middle Triassic successions of the Salt Range and the Trans-Indus Mountains in northern Pakistan.