Abstract

The Upper Assam Basin is a foreland basin, bounded by the eastern Himalayan foot hills to the North, Mishmi Hills to the northeast and Assam Arakan fold thrust belt to the south. The sedimentary succession in the basin have been characterized with different depositional environments viz. Shallow Marine (Langpar & Lakadong+Theria: Paleocene-Eocene), Deltaic (Barail-Oligocene), Fluvial (Tipam-Early Miocene), Fluvial-Lacustrine (Girujan-Late Miocene) and Fluvial (Alluvium-Pleistocene)