Upper Tertiary chronosequence stratigraphy of offshore Sabah and Sarawak, NW Borneo, Malaysia: A unified scheme based on graphic correlation


Author : William N. KrebsPublication : Bulletin of the Geological Society of MalaysiaVolume : 57Page : 39 - 46Year : 2011DOI : 10.7186/bgsm57201106


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Bulletin of the Geological Society of Malaysia, Volume 57, December 2011, pp. 39-46

Upper Tertiary chronosequence stratigraphy of offshore Sabah and Sarawak, NW Borneo, Malaysia: A unified scheme based on graphic correlation

William N. Krebs

PETRONAS Carigali Sdn. Bhd., Petronas Twin Towers, 50088 Kuala Lumpur, Malaysia
Present address: 2506 Plumfield Lane, Katy, Texas 77450 USA
Email Address: wnkrebs@hotmail.com

 

Abstract: Graphic correlation analysis of biostratigraphic data from wells drilled in Sabah and Sarawak reveals that their Upper Tertiary sections consist of numerous chronosequences that are separated by hiatuses (unconformities or condensed sections). These hiatuses converge and diverge and are highly variable in duration, but their timing and maximum durations are similar, although not identical, between Sabah and Sarawak. This similarity forms the basis for a single, unified stratigraphic framework for Sabah and Sarawak. Major tectonic, and possibly eustatic, events had a widespread effect on sedimentation in both regions.

Keywords: graphic correlation, biostratigraphy, Sabah, Sarawak

 https://doi.org/10.7186/bgsm57201106