Full text loading...
-
An Erosional Unconformity at the Top of the Nyalau Formation, Central Sarawak: Regional Context and Significance
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Asia Petroleum Geoscience Conference and Exhibition (APGCE), Nov 2022, Volume 2022, p.1 - 5
Abstract
Summary
This paper documents an erosional unconformity at the top of the Nyalau Formation (Oligocene-Early Miocene) exposed in a road-cut near Bintulu in central Sarawak. The outcrop of interest, which we call Outcrop no. 7 (longitude 113.212502°, latitude 3.325615°), is located about 25 km to the northeast of Bintulu between Tg. Kidurong and the Similajau Industrial Park. The main exposure is a 100 m-long road cut on the eastern side of the Bintulu-Miri road. It exposes sandstones of the Nyalau Formation overlain by mudstone in a channel-like feature with an erosional base. The erosional surface is irregular, and has a concave-upward surface, which is interpreted as representing a major regional unconformity.
© EAGE Publications BV