Gong, C, Wang, Y, Hodgson, DM et al. (4 more authors) (2014) Origin and anatomy of two different types of mass-transport complexes: a 3D seismic case study from the northern South China Sea margin. Marine and Petroleum Geology, 54. 198 - 215. ISSN 0264-8172
Abstract
Integration of 2D and 3D seismic data from the Qiongdongnan Basin along the northwestern South China Sea margin has enabled the seismic stratigraphy, seismic geomorphology and emplacement mechanisms of eight separate, previously undocumented, mass-transport complexes (MTCs) to be characterized. These eight MTCs can be grouped into two types:. (1) Localized detached MTCs, which are confined to submarine canyons and cover hundreds of km, consist of a few tens of km remobilized sediments and show long striations at their base. They resulted from small-scale mass-wasting processes induced by regional tectonic events and gravitational instabilities on canyon margins.(2) Regional attached MTCs, which occur within semi-confined or unconfined settings and are distributed roughly perpendicular to the strike of the regional slope. Attached MTCs occupy hundreds to thousands of km and are composed of tens to hundreds of km of remobilized sediments. They contain headwall escarpments, translated blocks, remnant blocks, pressure ridges, and basal striations and cat-claw grooves. They were created by large-scale mass-wasting processes triggered by high sedimentation rates, slope oversteepening by shelf-edge deltas, and seismicity.Our results show that MTCs may act as both lateral and top seals for underlying hydrocarbon reservoirs and could create MTC-related stratigraphic traps that represent potential drilling targets on continental margins, helping to identify MTC-related hydrocarbon traps.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2014, Elsevier. NOTICE: this is the author’s version of a work that was accepted for publication in Marine and Petroleum Geology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Marine and Petroleum Geology, 54, 2014, http://dx.doi.org/10.1016/j.marpetgeo.2014.03.006 |
Keywords: | Mass–transport complexes; Northern south China sea margin; Seismic stratigraphy; Seismic geomorphology; MTC-related hydrocarbon traps |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 30 Jul 2014 10:06 |
Last Modified: | 16 Jan 2018 00:39 |
Published Version: | http://dx.doi.org/10.1016/j.marpetgeo.2014.03.006 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.marpetgeo.2014.03.006 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:79867 |