Publication Date:
2008-03-01
Description:
The western flank of the Jerudong Anticline, onshore Brunei Darussalam, provides a rare opportunity to analyse the base of a major Miocene mud-rich delta in outcrop, including kilometre-scale prograding clinoforms, delta-front turbidites and large-scale syndepositional faults. The lateral continuation of this system in the subsurface of the Belait Syncline is documented on two-dimensional (2D) reflection seismic data and wireline logs. In order to link geological observations at surface with corresponding geophysical subsurface signatures, we constructed a combined, quantitative 3D surface-subsurface model of onshore Brunei Darussalam. This 3D model is used to analyse and discuss the relation between field geology and geophysical subsurface interpretation, and provides the base for a quantitative kinematic restoration of the Miocene Belait delta to its original shape before folding. Final decompaction of the balanced rock volume allows the reconstruction of the palaeo-relief of a series of Miocene clinoforms, indicating a close relation between delta-lobe activity, clinoform morphology and the generation of delta-front turbidites. © 2008 The Authors. Journal compilation © 2008 Blackwell Publishing.
Print ISSN:
0950-091X
Electronic ISSN:
1365-2117
Topics:
Geosciences
