Bulletin of the Geological Society of Malaysia, Volume 27, November 1990, pp. 1-25
128 rue du Bac, 75341 Paris cedex 07, France.
or CCOP 110/2, Sathorn Nua, 10400 Bangkok, Thailand.
Petroleum Research Institute-PETRONAS, Lot 1026, PKNS Industrial Estate, Ulu Kelang, 54200 Kuala Lumpur, Malaysia.
Abstract: A palaeontological and sedimentological study was carried out on samples from a well, Sotong B-1, drilled in the southern part ofthe Malay Basin. This study was confined
to the pre-Tertiary limestone basement rocks. This limestone has been assigned to the Late Triassic and displays characteristics similar to other Late Triassic limestones of the Tethyan realm. The age of the limestone suggests that a pre-Tertiary basement sequence ranging from the Lower Carboniferous to the Upper Triassic probably exists in the offshore areas of the Malay and Thai Basins.