Collisional tectonics between the Eurasian and Philippine Sea plates from tomography evidences in Southeast China

Zheng, Hangping; Gao, Rui; Li, Tingdong; Li, Qiusheng; He, Rizheng

doi:10.1016/j.tecto.2013.03.018

Cited by 33 publications

(37 citation statements)

References 46 publications

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“…The subducted Eurasian lithosphere colliding with the subducted PHS plate may have contributed to mountain building, active seismicity and crustal deformation in and around Taiwan . Zheng et al (2013) obtained improved tomographic images in the same region, which have confirmed the early results of Wang et al (2006). Huang et al (2010) applied a tomography method (Zhao et al 1994) to 5671 relative travel-time residuals from 257 teleseismic events recorded by 69 seismic stations to determine the 3-D P-wave velocity model of the upper mantle under SE China (Fig.…”

Section: Southeast Chinasupporting

confidence: 68%

“…The PHS plate moves toward the northwest at a rate of ∼ 40 mm/year (e.g., Seno et al 1993;Yu et al 1997), resulting in the Taiwan orogen which is one of the youngest and most active orogens in the world (e.g., Sibuet and Hsu 2004). The structure and tectonics around Taiwan and SE China have been of interest to many researchers who have investigated the detailed bathymetry, seismicity, earthquake mechanisms, morphological features, seismogenic structures, and the state of strain and stress in this region (e.g., Kao et al 1998Kao et al , 2000Wang et al 2006;Chen et al 2009;Cheng 2009;Wu et al 2009;Huang et al 2010;Zheng et al 2013).…”

Section: Southeast Chinamentioning

confidence: 99%

“…Pn-wave tomography has been used to determine two-dimensional (2-D) P-wave velocity variation and anisotropy in the uppermost mantle directly beneath the Moho discontinuity (e.g., Hearn et al 2004;Liang et al 2004;Pei et al 2007;Wang et al 2013a). The waveform modeling approach has been adopted to study the detailed structure of the crust and the subducting slab (e.g., Zhao 2005, 2014;Tajima et al 2009;Ye et al 2011;Li et al 2013). Bodywave tomography methods have been applied widely to study 3-D P-and S-wave velocity (Vp, Vs) structures of the crust and mantle down to a depth of ∼ 1300 km beneath East Asia, and they generally have a much higher spatial resolution than surface-wave tomography (e.g., Zhao 2006, 2009;Zhao 2005, 2009;Tian et al 2009;Tian and Zhao 2011;Xu and Zhao 2009;Wang et al 2006Wang et al , 2010Wei et al 2012).…”

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confidence: 99%

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East Asia Structure and Tectonics

Zhao

2015

Multiscale Seismic Tomography

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In this chapter, we review seismic tomography studies of the East Asia region and new insights into plate deep subductions, continental seismotectonics, intraplate magmatism, and mantle dynamics. The subducting Pacific slab is stagnant in the mantle transition zone under the Korean Peninsula and East China, and a big mantle wedge (BMW) has formed above the stagnant slab. Hot and wet upwelling flows in the BMW have caused intraplate volcanoes in NE Asia, lithospheric thinning and reactivation of the North China Craton, and large earthquakes in and around East China. Deep earthquakes in the Pacific slab may be related to a metastable olivine wedge in the slab. The deepest earthquakes (~ 600 km depth) under NE Asia may release more fluids preserved in the slab to the overlying BMW, contributing to the Changbai volcanism. The descending Indian plate beneath the Tibetan Plateau is clearly revealed. The Hainan volcano in South China is a hotspot fed by a deep mantle plume associated with plate deep subductions in the east and the west.

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Section: Southeast Chinasupporting

confidence: 68%

Section: Southeast Chinamentioning

confidence: 99%

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confidence: 99%

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East Asia Structure and Tectonics

Zhao

2015

Multiscale Seismic Tomography

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“…The combined results of all the drill locations calculated from the magnetic inclinations show a well-defined trend with age, suggesting Eocene-Recent northward movement from a sub-equatorial location (Hall et al, 1995). Despite a significant amount of magnetic, paleomagnetic, and seafloor topographic data, details of tectonic models of the development of the PSP are still under discussion (e.g., Deschamps and Lallemand, 2002;Pubellier et al, 2003aPubellier et al, , 2003bQueano et al, 2007;Yamazaki et al, 2010;Zheng et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Philippine Sea Plate motion history: Eocene-Recent record from ODP Site 1201, central West Philippine Basin

Richter

Ali

2015

Earth and Planetary Science Letters

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“…However, Moho deepening in the Central Range has been proposed mainly based on the detections of varying Moho depths (e.g., Rau and Wu 1995;Yeh et al 1998;Yen et al 1998;Kuo-Chen et al 2012;McIntosh et al 2013;Zheng et al 2013;Wu et al 2014), the temporal variation of surface uplift rate/ exhumation rate (e.g., Gourley et al 2007), or other geophysical observations associated with the 1999 M w 7.6 ChiChi, Taiwan earthquake (e.g., Hsu and Lo 2004;Shin et al 2011). In addition, several 2D fault models have been used to simulate the surface deformation across the Taiwan mountain belt (e.g., Johnson et al 2005;Ching et al 2011).…”

Section: Gravity Changes Due To Moho Deepening and Plate Subductionmentioning

confidence: 99%

Absolute gravity change in Taiwan: Present result of geodynamic process investigation

Kao¹,

Hwang²,

Kim³

et al. 2017

Terr. Atmos. Ocean. Sci.

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Gravity values at 24 sites over 2004 -2016 measured with absolute gravimeters are used to study geodynamic processes in Taiwan. We model rain-induced gravity effects and other temporal effects of non-geodynamic origins to obtain residual gravity, which cannot be fully explained by GPS-derived vertical displacements. We explain the gravity changes associated with deposited debris, earthquake, volcanism and Moho deepening. Gravity changes of 53.37 and 23.38 μGal near Sinwulyu and Laonong Rivers are caused by typhoon Morakot, leading to estimated volumes of 6.0 × 10 5 and 3.6 × 10 5 m 3 in deposited debris. The observed co-seismic gravity change near the epicenter of the M 6.9 Pingtung earthquake (26 December 2006) is 3.12 ± 0.99 μGal, consistent with a dislocation-based gravity change at the μGal level, thereby supplying a gravity constraint on the modeled fault parameters. The AG record at the Tatun Volcano Group is the longest, but large temporal gravity effects here has led to a current gravity signal-to-noise ratio of less than one, which cannot convince a sinking magma chamber, but supply an error bound for gravity detections of long-term or transient magma movements. The gravity values at Ludao and Lanyu decline steadily at the rates of -2.20 and -0.50 μGal yr -1 , consistent with the expected magma states of the two extinct volcanoes. The gravity rates at an uplifting site in central Taiwan and three subsiding sites in eastern Taiwan are negative, and are potentially caused by Moho deepening at a rate of -3.34 cm yr -1 and a combined Moho deepening and plate subduction at the rates of -0.18, -2.03, and -1.34 cm yr -1 . Article history:Received 10

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Collisional tectonics between the Eurasian and Philippine Sea plates from tomography evidences in Southeast China

Cited by 33 publications

References 46 publications

East Asia Structure and Tectonics

East Asia Structure and Tectonics

Philippine Sea Plate motion history: Eocene-Recent record from ODP Site 1201, central West Philippine Basin

Absolute gravity change in Taiwan: Present result of geodynamic process investigation

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