Sylhet-Kopili/Barail-Tipam Composite Total Petroleum System, Assam Geologic Province, India
By C.J. Wandrey
Petroleum Systems and Related Geologic Studies in Region 8, South Asia
Edited by Craig J. Wandrey
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Abstract
The Sylhet-Kopili/Barail-Tipam Composite Total Petroleum system (TPS) (803401) is located in the Assam Province in northeasternmost India and includes the Assam Shelf south of the Brahmaputra River. The area is primarily a southeast-dipping shelf overthrust by the Naga Hills on the southeast and the Himalaya Mountain range to the north. The rocks that compose this TPS are those of the Sylhet-Kopili/Barail-Tipam composite petroleum system. These rocks are those of the Eocene-Oligocene Jaintia Group Sylhet and Kopili Formations, the Oligocene Barail Group, and the Oligocene-Miocene Surma and Tipam Groups. These groups include platform carbonates, shallow marine shales and sandstones, and the sandstones, siltstones, shales, and coals of deltaic and lagoonal facies.