Entrained sand generates fault plane reflections on a deep-water thrust zone

Yukitsugu Totake* (Corresponding Author), Robert W. H. Butler, Clare E. Bond, Hiroyuki Tokunaga, Aznan Aziz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
18 Downloads (Pure)


Thrust zones in a deep-water fold-thrust belt, offshore NW Borneo, display prominent reflections that can be mapped through a 3D seismic volume. Unlike fault plane reflections obtained from thrusts in other systems, these have positive polarity. Well data show that the reflections in the Borneo data set originate from fault-bound sandstone slices, with porosity-occluding calcite cement, entrained along the thrust zone. The thrust zone can support elevated fluid pressures beneath the fault with the cemented sandstones. Multiple sandstone slices indicate complex patterns of thrust zone localization, perhaps a common feature for deformation in sedimentary multilayers typical of many deep-water depositional successions.
Original languageEnglish
Pages (from-to)1039-1042
Number of pages4
Issue number12
Early online date27 Sept 2018
Publication statusPublished - Dec 2018

Bibliographical note

This work is part of Ph.D. research supported by INPEX CORPORATION at University of Aberdeen. We thank Conrad Childs, Haakon Fossen, and an anonymous reviewer for their reviews and constructive suggestions. We thank Petronas and INPEX CORPORATION for the provision of seismic and well data to the Ph.D. research, and for permission to publish this work. Schlumberger and Midland Valley are thanked for the academic use of Petrel 2016.1 and Move 2017.2 software.


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