Link between growth faulting and initiation of a mass transport deposit in the northern Taranaki Basin, New Zealand

© 2017 The Authors. Basin Research © 2017 John Wiley & Sons Ltd, European Association of Geoscientists & Engineers and International Association of Sedimentologists The Neogene section in the northern Taranaki Basin, offshore New Zealand, displays an interaction among prograding clinofor...

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Main Authors: Nuttakarn Panpichityota, Christopher K. Morley, Jaydeep Ghosh
Format: Journal
Published: 2018
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85044416716&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/48415
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spelling th-cmuir.6653943832-484152018-04-25T10:12:08Z Link between growth faulting and initiation of a mass transport deposit in the northern Taranaki Basin, New Zealand Nuttakarn Panpichityota Christopher K. Morley Jaydeep Ghosh © 2017 The Authors. Basin Research © 2017 John Wiley & Sons Ltd, European Association of Geoscientists & Engineers and International Association of Sedimentologists The Neogene section in the northern Taranaki Basin, offshore New Zealand, displays an interaction among prograding clinoforms, listric growth faults formed at the base of slope and mass transport deposits that fill the growth fault depocentres. This study focuses on one of these systems, the Karewa Fault and mass transport deposit (MTD), in order to understand the genetic relationship between the fault and the MTD in its hangingwall depocentre, i.e. did the MTD fill existing accommodation space? Did the MTD trigger growth fault displacement? Or is there some other relationship? Most mass transport deposits are elongate in the transport direction and exhibit a length:width aspect ratio of more than 1. However, the 90 km 2 Karewa Fault MTD is at least three times wider than it is long, which is atypical for MTDs reported in the literature, where ~80% have a length:width ratio > 1. The transport direction of the MTD is to the WNW, as indicated by the location and internal structure of the compressional toe and the headwall scarp region of the Karewa Fault. The structural and sequence geometries on seismic reflection data indicate the MTD formed during the late stage of growth fault activity, and locally truncates the upper part of the Karewa Fault. The MTD is inferred to have originated by local destabilization of the sediment package overlying the Karewa Fault related to the escape of overpressured fluids along the fault. The resulting MTD was translated locally by only a few kilometres. This unusual cause for an MTD also resulted in its atypical length–width–thickness aspect ratios. 2018-04-25T10:12:08Z 2018-04-25T10:12:08Z 2018-04-01 Journal 13652117 0950091X 2-s2.0-85044416716 10.1111/bre.12251 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85044416716&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/48415
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description © 2017 The Authors. Basin Research © 2017 John Wiley & Sons Ltd, European Association of Geoscientists & Engineers and International Association of Sedimentologists The Neogene section in the northern Taranaki Basin, offshore New Zealand, displays an interaction among prograding clinoforms, listric growth faults formed at the base of slope and mass transport deposits that fill the growth fault depocentres. This study focuses on one of these systems, the Karewa Fault and mass transport deposit (MTD), in order to understand the genetic relationship between the fault and the MTD in its hangingwall depocentre, i.e. did the MTD fill existing accommodation space? Did the MTD trigger growth fault displacement? Or is there some other relationship? Most mass transport deposits are elongate in the transport direction and exhibit a length:width aspect ratio of more than 1. However, the 90 km 2 Karewa Fault MTD is at least three times wider than it is long, which is atypical for MTDs reported in the literature, where ~80% have a length:width ratio > 1. The transport direction of the MTD is to the WNW, as indicated by the location and internal structure of the compressional toe and the headwall scarp region of the Karewa Fault. The structural and sequence geometries on seismic reflection data indicate the MTD formed during the late stage of growth fault activity, and locally truncates the upper part of the Karewa Fault. The MTD is inferred to have originated by local destabilization of the sediment package overlying the Karewa Fault related to the escape of overpressured fluids along the fault. The resulting MTD was translated locally by only a few kilometres. This unusual cause for an MTD also resulted in its atypical length–width–thickness aspect ratios.
format Journal
author Nuttakarn Panpichityota
Christopher K. Morley
Jaydeep Ghosh
spellingShingle Nuttakarn Panpichityota
Christopher K. Morley
Jaydeep Ghosh
Link between growth faulting and initiation of a mass transport deposit in the northern Taranaki Basin, New Zealand
author_facet Nuttakarn Panpichityota
Christopher K. Morley
Jaydeep Ghosh
author_sort Nuttakarn Panpichityota
title Link between growth faulting and initiation of a mass transport deposit in the northern Taranaki Basin, New Zealand
title_short Link between growth faulting and initiation of a mass transport deposit in the northern Taranaki Basin, New Zealand
title_full Link between growth faulting and initiation of a mass transport deposit in the northern Taranaki Basin, New Zealand
title_fullStr Link between growth faulting and initiation of a mass transport deposit in the northern Taranaki Basin, New Zealand
title_full_unstemmed Link between growth faulting and initiation of a mass transport deposit in the northern Taranaki Basin, New Zealand
title_sort link between growth faulting and initiation of a mass transport deposit in the northern taranaki basin, new zealand
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85044416716&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/48415
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