and Indo-Burman Ranges, comprises three geo-tectonic provinces:(1) The Stable Shelf;(2)
The Central Deep Basin (extending from the Sylhet Trough in the northeast towards the
Hatia Trough in the south); and (3) The Chittagong–Tripura Fold Belt. Due to location of the
basin at the juncture of three interacting plates, viz., the Indian, Burma and Tibetan
(Eurasian) Plates, the basin-fill history of these geo-tectonic provinces varied considerably …