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From convergent plate margin to arc-continent collision: formation of the Kenting Mélange, southern Taiwan

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From convergent plate margin to arc-continent collision : formation of the Kenting Mélange, southern Taiwan. / Zhang, Xinchang; Cawood, Peter Anthony; Huang, Chi-Yue; Wang, Yuejun ; Yan, Yi; Santosh, M. ; Chen, Wenhuang; Yu, Mengming.

In: Gondwana Research, Vol. 38, 10.2016, p. 171-182.

Research output: Contribution to journalArticle

Harvard

Zhang, X, Cawood, PA, Huang, C-Y, Wang, Y, Yan, Y, Santosh, M, Chen, W & Yu, M 2016, 'From convergent plate margin to arc-continent collision: formation of the Kenting Mélange, southern Taiwan' Gondwana Research, vol. 38, pp. 171-182. https://doi.org/10.1016/j.gr.2015.11.010

APA

Zhang, X., Cawood, P. A., Huang, C-Y., Wang, Y., Yan, Y., Santosh, M., ... Yu, M. (2016). From convergent plate margin to arc-continent collision: formation of the Kenting Mélange, southern Taiwan. Gondwana Research, 38, 171-182. https://doi.org/10.1016/j.gr.2015.11.010

Vancouver

Zhang X, Cawood PA, Huang C-Y, Wang Y, Yan Y, Santosh M et al. From convergent plate margin to arc-continent collision: formation of the Kenting Mélange, southern Taiwan. Gondwana Research. 2016 Oct;38:171-182. https://doi.org/10.1016/j.gr.2015.11.010

Author

Zhang, Xinchang ; Cawood, Peter Anthony ; Huang, Chi-Yue ; Wang, Yuejun ; Yan, Yi ; Santosh, M. ; Chen, Wenhuang ; Yu, Mengming. / From convergent plate margin to arc-continent collision : formation of the Kenting Mélange, southern Taiwan. In: Gondwana Research. 2016 ; Vol. 38. pp. 171-182.

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@article{db65f85f1fce44cfb28eadd18ab5f667,
title = "From convergent plate margin to arc-continent collision: formation of the Kenting M{\'e}lange, southern Taiwan",
abstract = "The Kenting M{\'e}lange on the Hengchun Peninsula, Taiwan, formed through tectonic shearing of subduction complex lithologies, probably within the plate boundary subduction channel between the Eurasian and Philippine Sea plates, with further deformation and exhumation in the Pliocene-Pleistocene during arc-continent collision. Field relations reveal a structural gradation from normal stratified turbidite sequence (Mutan Formation) through broken formation to highly sheared Kenting M{\'e}lange containing allochthonous polygenic blocks. This gradation is consistent with an increase of average vitrinite reflection values from ~ 0.72{\%} in the Mutan Formation through ~ 0.93{\%} in the broken formation to ~ 0.99{\%} in the m{\'e}lange, suggesting temperatures of at least 140 °C during formation of the Kenting M{\'e}lange. Zircons from gabbro in the Kenting M{\'e}lange are dated as 25.46 ± 0.18 Ma, which together with geochemical data constrains the source to South China Sea oceanic lithosphere. In combination with the field relationships, vitrinite reflectance values, microfossil stratigraphy and offshore geophysical data from S and SE Taiwan, we propose that the Kenting M{\'e}lange initially formed at the subduction plate boundary from offscraped trench deposits. Minor Plio-Pleistocene microfossils (< 5{\%}) occur within the m{\'e}lange in proximity to slope basin of equivalent age and were likely sheared into the m{\'e}lange during out-of-sequence thrusting associated with active arc-continent collision, which in the Hengchun Peninsula commenced after 6.5 Ma.",
keywords = "Accretionary complex, Kenting M{\'e}lange, Vitrinite reflectance, SHRIMP U-Pb dating, Splay fault",
author = "Xinchang Zhang and Cawood, {Peter Anthony} and Chi-Yue Huang and Yuejun Wang and Yi Yan and M. Santosh and Wenhuang Chen and Mengming Yu",
note = "his work was financially co-supported by the National Natural Science Foundation of China (grants 41190073, 41176041, 91128211), the National Basic Research Program of China (grant 42014CB440901), the Fundamental Research Funds for the Central Universities to SYSU and the GIGCAS 135 Project (grant Y234031001).",
year = "2016",
month = "10",
doi = "10.1016/j.gr.2015.11.010",
language = "English",
volume = "38",
pages = "171--182",
journal = "Gondwana Research",
issn = "1342-937X",
publisher = "Elsevier Inc.",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - From convergent plate margin to arc-continent collision

T2 - Gondwana Research

AU - Zhang, Xinchang

AU - Cawood, Peter Anthony

AU - Huang, Chi-Yue

AU - Wang, Yuejun

AU - Yan, Yi

AU - Santosh, M.

AU - Chen, Wenhuang

AU - Yu, Mengming

N1 - his work was financially co-supported by the National Natural Science Foundation of China (grants 41190073, 41176041, 91128211), the National Basic Research Program of China (grant 42014CB440901), the Fundamental Research Funds for the Central Universities to SYSU and the GIGCAS 135 Project (grant Y234031001).

PY - 2016/10

Y1 - 2016/10

N2 - The Kenting Mélange on the Hengchun Peninsula, Taiwan, formed through tectonic shearing of subduction complex lithologies, probably within the plate boundary subduction channel between the Eurasian and Philippine Sea plates, with further deformation and exhumation in the Pliocene-Pleistocene during arc-continent collision. Field relations reveal a structural gradation from normal stratified turbidite sequence (Mutan Formation) through broken formation to highly sheared Kenting Mélange containing allochthonous polygenic blocks. This gradation is consistent with an increase of average vitrinite reflection values from ~ 0.72% in the Mutan Formation through ~ 0.93% in the broken formation to ~ 0.99% in the mélange, suggesting temperatures of at least 140 °C during formation of the Kenting Mélange. Zircons from gabbro in the Kenting Mélange are dated as 25.46 ± 0.18 Ma, which together with geochemical data constrains the source to South China Sea oceanic lithosphere. In combination with the field relationships, vitrinite reflectance values, microfossil stratigraphy and offshore geophysical data from S and SE Taiwan, we propose that the Kenting Mélange initially formed at the subduction plate boundary from offscraped trench deposits. Minor Plio-Pleistocene microfossils (< 5%) occur within the mélange in proximity to slope basin of equivalent age and were likely sheared into the mélange during out-of-sequence thrusting associated with active arc-continent collision, which in the Hengchun Peninsula commenced after 6.5 Ma.

AB - The Kenting Mélange on the Hengchun Peninsula, Taiwan, formed through tectonic shearing of subduction complex lithologies, probably within the plate boundary subduction channel between the Eurasian and Philippine Sea plates, with further deformation and exhumation in the Pliocene-Pleistocene during arc-continent collision. Field relations reveal a structural gradation from normal stratified turbidite sequence (Mutan Formation) through broken formation to highly sheared Kenting Mélange containing allochthonous polygenic blocks. This gradation is consistent with an increase of average vitrinite reflection values from ~ 0.72% in the Mutan Formation through ~ 0.93% in the broken formation to ~ 0.99% in the mélange, suggesting temperatures of at least 140 °C during formation of the Kenting Mélange. Zircons from gabbro in the Kenting Mélange are dated as 25.46 ± 0.18 Ma, which together with geochemical data constrains the source to South China Sea oceanic lithosphere. In combination with the field relationships, vitrinite reflectance values, microfossil stratigraphy and offshore geophysical data from S and SE Taiwan, we propose that the Kenting Mélange initially formed at the subduction plate boundary from offscraped trench deposits. Minor Plio-Pleistocene microfossils (< 5%) occur within the mélange in proximity to slope basin of equivalent age and were likely sheared into the mélange during out-of-sequence thrusting associated with active arc-continent collision, which in the Hengchun Peninsula commenced after 6.5 Ma.

KW - Accretionary complex

KW - Kenting Mélange

KW - Vitrinite reflectance

KW - SHRIMP U-Pb dating

KW - Splay fault

U2 - 10.1016/j.gr.2015.11.010

DO - 10.1016/j.gr.2015.11.010

M3 - Article

VL - 38

SP - 171

EP - 182

JO - Gondwana Research

JF - Gondwana Research

SN - 1342-937X

ER -

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ID: 240104557