Tectonic control on mass‐transport deposit and canyon‐fed fan system in the Ulleung Basin, East Sea (Sea of Japan)

Park, Yongjoon; Yoo, Dong‐Geun; Kang, Nyeon‐Keon; Yi, Bo‐Yeon; Kim, Byoung-Yeop

doi:10.1111/bre.12501

Cited by 8 publications

(3 citation statements)

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“…Aggradational channels form in high accommodation regimes in the lower course of relatively steep out‐of‐grade systems (Pirmez et al ., 2000; Kneller, 2003; Samuel et al ., 2003; Hodgson et al ., 2011) and up‐dip of topographic obstacles (growing tectonic or salt‐related structures, mass transport deposits, and a combination thereof) due to flow blocking by (Kane et al ., 2012; Hansen et al ., 2015, 2017; Torres Carbonell & Olivero, 2019; Watson et al ., 2020; Park et al ., 2021; Tek et al ., 2021) or in systems at grade in which an equilibrium sinuosity has been reached and overspilling of finer‐grained sediments promotes levee aggradation (Peakall et al ., 2000). Alternatively, Kneller (2003) proposed that changes in flow parameters towards less dense, thick and finer‐grained flows might force a channel to aggrade, irrespective of its along dip profile.…”

Section: Discussionmentioning

confidence: 99%

Stratigraphic evolution of a spectacularly exposed turbidite channel belt from the Tachrift System (late Tortonian, north‐East Morocco)

et al. 2023

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The sedimentary architecture of channelized turbidites can be highly complex as it reflects the response of submarine channels to several interplaying factors. Although intensively investigated through seismic imaging, turbidite channel fills are not convincingly calibrated for sedimentary facies at a sub‐seismic scale. This contribution addresses the sedimentary architecture and the controls on the evolution of a ca 20 m thick channel‐levee complex of the Tachrift turbidite subunit (Upper Miocene, the Melloulou Formation), which accumulated along the southern slope of the Neogene Taza‐Guercif Basin (Rifian Corridor of north‐east Morocco). Facies and architectural analyses indicate that the studied channel‐levee complex is the result of three‐fold evolution. From base to top, it is comprised of: (i) a ca 7 m thick lower mud‐prone interval containing relatively small and vertically stacked channel fills with poorly developed muddy levees; (ii) a ca 4 m thick and >1 km wide sandstone‐rich middle interval made of lateral accretion packages that become progressively less amalgamated and fine‐grained and is overlain by ca 5 m of thin‐bedded mud‐rich turbidites intercalated with hemiplegic marlstones; and (iii) an up to ca 9 m thick upper interval constituted by aggradational channel fills with well‐developed levees and variously directed lateral accretion packages. This organization suggests that, following a phase of inception (lower interval), the channel underwent extensive meandering with very minor vertical aggradation, prior to being blanketed by ‘retrogressive’ muddy lobes (middle interval) during a phase of reduced sediment input. In turn, the uppermost interval records a late phase of channel re‐establishment and aggradation that likely terminated as a result of up‐dip avulsion. It is suggested that the observed change of architectural style reflected the feedback of changing sediment input, slope equilibrium profile and channel morphodynamics.

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Section: Discussionmentioning

confidence: 99%

Stratigraphic evolution of a spectacularly exposed turbidite channel belt from the Tachrift System (late Tortonian, north‐East Morocco)

et al. 2023

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“…Hitherto, this two-stage tectonic scenario is most widely referred to as the evolutionary framework of the Ulleung Basin (Bahk et al, 2017;Cukur et al, 2018;Park et al, 2019;Horozal et al, 2021;Park et al, 2021). However, the scenario omits the final tectonic phase of the East Sea, marked by the nucleation of a new embryonic subduction system under E-W compressional stress since the Early Pliocene.…”

Section: Regional Settingmentioning

confidence: 99%

Two Distinct Back-Arc Closure Phases of the East Sea: Stratigraphic Evidence From the SW Ulleung Basin Margin

Lee

Yoon

et al. 2022

Front. Earth Sci.

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This study focuses on revisiting the tectostratigraphic framework of the Ulleung Basin and conceptualizing neotectonics around the western East Sea margin. Based on the analysis of 2D and 3D multi-channel seismic reflection data and offshore drill wells, we divided the entire sedimentary successions of the Ulleung Basin into four tectostratigraphic sequences, named TS1 (c. 23–16 Ma), TS2 (c. 16–9 Ma), TS3 (c. 9–4 Ma), and TS4 (c. 4 Ma–present), in ascending order. The results show that each sequence has been deformed once or multiple times in different periods by juxtaposing two major compressional structures named the Dolgorae Thrust-Fold Belt and the Gorae Anticline. Interpretation of the stratal deformation and termination patterns of the syn- and post-deformational sequences of each structures suggests that the thrusting and folding of the Dolgorae Thrust-Fold Belt was active from c. 16 Ma to c. 9 Ma under the NNW–SSE compressional stress regime (Stage-2), whereas the Gorae Anticline was active from 4 Ma to the present under the ENE–WSW compressional stress regime (Stage-4). Between these two compressional events, there was an intervening period of regional slow subsidence driven by thermal contraction of the back-arc lithosphere and isostatic sedimentary loading (Stage-3). Based on the stratigraphic and structural reconstruction, we propose a 4-stage tectonic model: Stage-1) back-arc opening stage associated with the southward drift of the Japanese islands (c. 23–16 Ma), Stage-2) tectonic-inversion stage in association with the reorganization of the Pacific and Philippine Sea plates and clockwise rotation of SW Japan (c. 16–9 Ma), Stage-3) post-inversion stage with regional thermal and isostatic subsidence (c. 9–4 Ma), and Stage-4) neotectonic stage in which embryonic subduction is nucleating on the East Sea margins under the E–W compressional stress regime (c. 4 Ma–present).

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“…Some researchers thought that the folds in Tsushima are the onshore part of the Taiwan-Shinji fold belt (Itoh & Nagasaki, 1996), which was formed mainly in the latest Miocene (Cukur et al, 2011;Gungor et al, 2012;Kong et al, 2000;Lee et al, 2006Lee et al, , 2011Tanaka & Ogusa, 1981). However, Korean geologists revealed that the folding began at 12 Ma (Figure 16) (Kim et al, 2019;Lee et al, 2001Lee et al, , 2011Park et al, 2020;Yoon et al, 2002Yoon et al, , 2003. It means that the folding in the belt was not simultaneous with the main phase of the folding in Tsushima (Figure 16).…”

Section: Implications For Regional Tectonicsmentioning

confidence: 99%

Styles of mesoscale brittle deformations associated with the Miocene folding of the Taishu Group, Tsushima, between the Japan Sea and East China Sea backarc basins

2021

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The Taishu Group is a folded, Eocene-Lower Miocene, thick sedimentary package exposed widely on Tsushima Island between the Japan Sea and East China Sea. This location makes the strata important to understand tectonics and paleo-environments in the Far East, but the timing of the folding is controversial. We studied the styles of brittle deformations of the strata. It was found that flextural-slip folds were dominant. Mesoscale faults were classified into two groups: NE-SW trending reverse faults and NW-SE trending strike-slip faults. Members of both the groups showed movements largely perpendicular to the fold axes. The latter group consisted of sinistral and dextral faults.Accordingly, we interpreted that they were transfer faults activated during the folding.Consequently, mesoscale faults and flexural-slip faults evidence the map-scale plane strain of the Taishu Group in the plane perpendicular to the NE-trending fold axes. There were few transpressional deformations in the group. This is inconsistent with the transpression hypothesis for explaining the simultaneous folding and Japan Sea opening. Another hypothesis in which the folds in Tsushima are regarded as an onshore part of the Taiwan-Shinji fold belt is inconsistent with the timing of folding suggested by mining geologists to be consistent with and contemporaneous with this deformation. On the other hand, we found that dolerite dikes and sills were involved in the folding. Therefore, we conclude that the folding began during the late Early Miocene time and climaxed during the ore mineralization at around 15 Ma. We suggest that the folding in Tsushima was the easternmost manifestation of the compressional regime around the Yellow Sea and East China Sea in the Early to early Middle Miocene, and that the compression was brought about by the arrival of the Philippine Sea plate to initiate buoyant subduction under Kyushu.

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Tectonic control on mass‐transport deposit and canyon‐fed fan system in the Ulleung Basin, East Sea (Sea of Japan)

Abstract: Mass-transport deposits (MTDs) and submarine fan complexes are the results of gravity-induced sedimentary flows occurring mainly in deep-water environments (Bouma,

Cited by 8 publications

References 88 publications

Stratigraphic evolution of a spectacularly exposed turbidite channel belt from the Tachrift System (late Tortonian, north‐East Morocco)

Stratigraphic evolution of a spectacularly exposed turbidite channel belt from the Tachrift System (late Tortonian, north‐East Morocco)

Two Distinct Back-Arc Closure Phases of the East Sea: Stratigraphic Evidence From the SW Ulleung Basin Margin

Styles of mesoscale brittle deformations associated with the Miocene folding of the Taishu Group, Tsushima, between the Japan Sea and East China Sea backarc basins

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