Tectonic erosion and the removal of forearc lithosphere during arc-continent collision: Evidence from recent earthquake sequences and tomography results in eastern Taiwan

Ôta, Yôko; Wu, Yih‐Min; Chang, C. C.; Huang, Hsin‐Hua

doi:10.1016/j.jseaes.2011.05.015

Cited by 30 publications

(20 citation statements)

References 45 publications

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“…Figure 5 shows a reconstruction of tectonic processes during the Caledonian orogeny, assuming that the subduction of the SNC occurred in an arc-continent collision and that exhumation occurred by extraction of the forearc lithospheric block. As a template, we used the presently ongoing arc-continent collision in Taiwan (e.g., Malavieille and Trullenque, 2009) where downward extraction of the forearc block is observed by seismic tomography and earthquake hypocenter relocation (Shyu et al, 2011). We assume that the Middle Allochthon was part of the outer margin of Baltica, separated from the inner margin by a mantle culmination where the crust was nearly or completely interrupted by rifting (Andersen et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Microdiamond discovered in the Seve Nappe (Scandinavian Caledonides) and its exhumation by the “vacuum-cleaner” mechanism

Majka

Rosén

Janák

et al. 2014

Geology

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Section: Discussionmentioning

confidence: 99%

Microdiamond discovered in the Seve Nappe (Scandinavian Caledonides) and its exhumation by the “vacuum-cleaner” mechanism

Majka

Rosén

Janák

et al. 2014

Geology

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“…Compression across the forearc basin appears to have stacked part of the accretionary wedge on forearc basement southeast of Taiwan [ Chi et al ., ]. Similarly, the southern portion of the Central Range may overthrust the forearc on the Hengchun Peninsula [ Shyu et al ., ]. The mode of deformation may be different farther north: Seismic velocity images and seismicity maps in southeastern Taiwan suggest that most of the convergence here is accommodated on east dipping thrust faults emerging just west of the Luzon Arc [ Lee et al ., ; McIntosh et al ., ; Huang et al ., ].…”

Section: Discussionmentioning

confidence: 99%

Deep crustal structure of an arc‐continent collision: Constraints from seismic traveltimes in central Taiwan and the Philippine Sea

et al. 2014

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The collision of continental crust of the Eurasian Plate with the overriding Luzon Arc in centralTaiwan has led to compression, uplift, and exhumation of rocks that were originally part of the Chinese rifted margin. Though the kinematics of the fold-thrust belt on the west side of the orogen has been described in detail, the style of deformation in the lower crust beneath Taiwan is still not well understood. In addition, the fate of the Luzon Arc and Forearc in the collision is also not clear. Compressional wave arrival times from active-source and earthquake seismic data from the Taiwan Integrated Geodynamic Research program constrain the seismic velocity structure of the lithosphere along transect T5, an east-west corridor in central Taiwan. The results of our analysis indicate that the continental crust of the Eurasian margin forms a broad crustal root beneath central Taiwan, possibly with a thickness of 55 km. Compressional seismic velocities beneath the Central Range of Taiwan are as low as 5.5 km/s at 25 km depth, whereas P wave seismic velocities in the middle crust on the eastern flank of the Taiwan mountain belt average 6.5-7.0 km/s. This suggests that the incoming sediments and upper crust of the Eurasian Plate are buried to midcrustal depth in the western flank of the orogen before they are exhumed in the Central Range. To the east, the Luzon Arc and Forearc are deformed beneath the Coastal Range of central Taiwan. Fragments of the rifted margin of the South China Sea that were accreted in the early stages of the collision form a new backstop that controls the exhumation of Eurasian strata to the west in this evolving mountain belt.

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“…6; Chemenda et al, 1997;Malavieille et al, 2002;Shyu et al, 2011). The width of the forearc basement does not exceed 60 km at the latitude of the Batan islands south of Taiwan so that, if we consider that the forearc block was fully locked with the subducting plate (extreme case) and a splay (out of sequence) fault accommodated its underthrusting, about 1 m.y.…”

Section: Effects Of the Collision Between The Luzon Arc And The Chinementioning

confidence: 99%

Strain modes within the forearc, arc and back-arc domains in the Izu (Japan) and Taiwan arc-continent collisional settings

Lallemand

2014

Journal of Asian Earth Sciences

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Tectonic erosion and the removal of forearc lithosphere during arc-continent collision: Evidence from recent earthquake sequences and tomography results in eastern Taiwan

Cited by 30 publications

References 45 publications

Microdiamond discovered in the Seve Nappe (Scandinavian Caledonides) and its exhumation by the “vacuum-cleaner” mechanism

Microdiamond discovered in the Seve Nappe (Scandinavian Caledonides) and its exhumation by the “vacuum-cleaner” mechanism

Deep crustal structure of an arc‐continent collision: Constraints from seismic traveltimes in central Taiwan and the Philippine Sea

Strain modes within the forearc, arc and back-arc domains in the Izu (Japan) and Taiwan arc-continent collisional settings

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