Trap styles of the Tenggol Arch and the southern part of the Malay Basin


Author : Ng Tong SanPublication : Bulletin of the Geological Society of MalaysiaVolume : 21Page : 177-193Year : 1987


Description

Bulletin of the Geological Society of Malaysia, Volume 21, Dec. 1987, pp. 177 – 193

 

Trap styles of the Tenggol Arch and the southern part of the Malay Basin

NG TONG SAN

PETRONAS Carigali Sdn. Bhd.

 

Abstract: The Tenggol Arch and the southern part of the Malay Basin are situated in offshore Terengganu, Peninsular Malaysia. They are believed to form parts of an Early Oligocene (?) rift system.

Drape and anticlinal features and fault/dip closures have been identified in the area. The drapes are common features of the Tenggol Arch, and they are generally of low reliefs associated with basement topography. The anticlinal features are characteristics of the Malay Basin, and they are generally elongated with great reliefs. Fault/dip closures are found near the eastern flank of the basin against the faulted margin of the Tenggol Arch. These anticlines and fault/dip closures are believed to be related to the shear movement during Miocene.

The above trap styles have been tested and commercial hydrocarbons accumulations have been found in some of them.