Arc-continent collision in Taiwan: New marine observations and tectonic evolution

Malavieille, Jacques; Lallemand, Serge; Dominguez, Stéphane; Deschamps, A.; Chang-yi, LU; Liu, Char‐Shine; Schnuerle, Philippe; Angelier, Jacques; Collot, Jean‐Yves; Deffontaines, Benoı̂t; Fournier, Marc; Hsu, Shu-Kun; Formal, J.-P. Le; Liu, S. Y.; Sibuet, Jean-Claude; Thareau, Nicolas; Wang, F.

doi:10.1130/0-8137-2358-2.187

Cited by 139 publications

(205 citation statements)

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“…1). The morphological expressions, structural characteristics and tectonic evolution of the incipient arc-continent collision zone offshore of southeastern Taiwan have been reported extensively (e.g., Chen and Juang 1986;Chen et al 1988;Huang et al 1992Huang et al , 1995Huang et al , 1997Lundberg et al 1992Lundberg et al , 1997Fuh et al 1997;Liu et al 1998;Malavieille et al 2002). Offshore of southwestern Taiwan, where the outgrowth of the submarine accretionary wedge extends westward to the China continental slope, prominent morphological features are anticlinal ridges and submarine canyons (Fig.…”

Section: Morphotectonic Featuresmentioning

confidence: 97%

Distribution and Characters of Gas Hydrate Offshore of Southwestern Taiwan

Liu¹,

Schnürle²,

Wang³

et al. 2006

Terr. Atmos. Ocean. Sci.

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ABSTRACT1 Institute of Oceanography, National Taiwan University, Taipei, Taiwan, ROC 2 Central Geologic Survey, Taipei, Taiwan, ROC 3 Exploration Department, Chinese Petroleum Company, Miaoli, Taiwan, ROC * Corresponding author address: Prof. Char-Shine Liu, Institute of Oceanography, National Taiwan University, Taipei, Taiwan, ROC; E-mail: csliu@ntu.edu.tw Bottom simulating reflector (BSR) is a key indicator for the presence of gas hydrate beneath the sea floor. Widely distributed BSRs have been observed in the area offshore of southwestern Taiwan where the active accretionary complex meets with the passive China continental margin. In order to better understand the distribution and characters of the gas hydrate in the region, closely spaced (1.86-km line spacing) multichannel seismic reflection surveys have been conducted in recent years under the support of the Central Geological Survey, ROC. Over 10000 km of multichannel seismic reflection profiles have been collected that cover an area of about 10000 km 2 offshore of southwestern Taiwan. BSRs can be identified along 50% of the seismic profiles that we collected. A newly compiled BSR distribution map suggests that gas hydrates are distributed both in the passive margin of the China continental slope as well as in the submarine Taiwan accretionary wedge, from water depths of 500 to over 3000 m. Gas hydrates are most concentrated underneath anticlinal ridges in the accretionary wedge, and underneath the slope ridges of the passive continental margin that were formed due to sedimentary processes. Active fluid activities are evident from various features observed on seismic reflection and chirp sonar profiles, such as mud volcanoes, gas plumes and gas charged shallow sedimentary layers. Fluid migration model has been established from a set of pseudo 3D seismic reflection data. The predicted locations of high fluid Terr. Atmos. Ocean. Sci., Vol. 17, No. 4, December 2006 616 flux correlate well with those interpreted from geochemical analyses that show very high methane concentrations and very shallow sulfate-methane interfaces (SMI). This demonstrates the importance of structural control over gas hydrate emplacement. From the observed gas hydrate distribution and characters, the area offshore of southwestern Taiwan provides an ideal place to study and compare the formation and migration of gas hydrates under different tectonic settings.

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Section: Morphotectonic Featuresmentioning

confidence: 97%

Distribution and Characters of Gas Hydrate Offshore of Southwestern Taiwan

Liu¹,

Schnürle²,

Wang³

et al. 2006

Terr. Atmos. Ocean. Sci.

Self Cite

149

108

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“…This paper focuses on characterizing the Present-day active surface deformation at the north end of the Longitudinal Valley. The study area, where Hualien City is located, is also at the transition zone of plate configuration flipping where the Philippine Sea plate turns from overriding the Eurasian plate in the south to subducting to it in the north (Suppe 1984;Burbank and Anderson 2001;Lallemand et al 2001;Malavieille et al 2002). According to previous seismological analyses, to the north of Hualien, the present shallow crustal deformation from Ilan to Hualien is accommodated by abundant faulting with a rather complex pattern, a mixture of normal faulting, thrust faulting and strike-slip faulting (Kao et al 1998;Rau et al 2008;Wu et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Campaigned GPS on Present-Day Crustal Deformation in Northernmost Longitudinal Valley Preliminary Results, Hualien Taiwan

Chen¹,

Lee²,

Chen³

et al. 2014

Terr. Atmos. Ocean. Sci.

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The Longitudinal Valley in Eastern Taiwan sits at the collision suture between the Eurasian and Philippine Sea plates. Based on repeated GPS campaigned measurements from 25 stations six times in 2007 -2009, we characterize the surface deformation in the northernmost Longitudinal Valley where the Coastal Range of the Philippine Sea plate turns northward diving under the Eurasian plate producing two major active faults: the Milun fault and the Longitudinal Valley fault. We reconstructed a GPS velocity field and conducted strain analyses and elastic block modeling. Our results suggest a rapid clockwise rotation of 33° Myr -1 and an eastward tectonic escape in the small Hualien City block (HUAL) area of ~10 × 10 km, which is apparently detached from the regional rotating RYUK block defined by previous studies. We interpret it as being initiated locally by the northwest indentation of the Coastal Range, which pushed the HUAL block to move upward and eastward. According to our strain analyses, the HUAL block shows a significant internal elastic strain inside the Milun Tableland, the hanging wall of the Milun fault. No significant deformation was observed across the surface trace of the fault, indicating that the Milun fault is now probably locked in the near surface. The deformation in the footwall of the fault was accommodated by pure-shear strain with a major NNW-compression and a minor ENE-extension. The deformation in the hanging wall is characterized by simple-shear strain with ENE-extension in its northern part and little deformation in the southern part, separated by a little known NW-trending active fault zone (Dongmingyi fault), which needs further investigation.

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“…Northeast of Taiwan, the Philippine Sea plate is being subducted beneath the Ryukyu arc of the Chinese continental margin, while south of Taiwan island, the oceanic lithosphere of the South China Sea subducts the Philippine Sea plate. The central part represents a major collision zone between these two plates [Biq, 1965;Chen and Wang, 1986;Ho, 1988;Teng, 1990;Malavieille et al, 2002] (Figure 1). The Philippine Sea plate moves in a NW direction by nearly 8 cm/a relative to the Eurasian plate, resulting in an oblique collision between the Luzon arc and the continental margin of the Eurasian plate.…”

Section: Introductionmentioning

confidence: 99%

Coseismic displacement and tectonic implication of 1951 Longitudinal Valley earthquake sequence, eastern Taiwan

Lee¹,

Chen²,

Rau³

et al. 2008

J. Geophys. Res.

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The Longitudinal Valley Fault (LVF) in eastern Taiwan is an extremely active fault with 3–4 cm of displacements consumed each year along its length. The fault forms the suture zone between the Philippine Sea and Eurasian plates as a result of an oblique arc continental collision. From 22 October to 5 December 1951, four earthquakes (Ms > 7) shook the LVF. We used triangulation (from 1917 to 1921 to 1976–1978) and interseismic GPS (from 1990 to 1995) data to estimate coseismic displacements of the 1951 earthquake sequences. Coseismic displacement progressively decreases from north to south and the azimuth changes from north to NE, then to a NW direction. According to the inverted faulting mechanism, the Longitudinal Valley fault can be separated into three segments. Both the northern and central segments have a high dip angle to the east, but the southern segment is of listric fault geometry. The northern segment exhibits dominantly left lateral strike‐slip faulting with reverse component, while the middle exhibits thrusting dominantly, and the southern segment exhibits thrusting with left‐lateral motion associated with a smaller coseismic displacement. In addition, this three‐segment deformation model can explain the pattern of recent crustal deformation along the LVF and Coastal Range.

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Arc-continent collision in Taiwan: New marine observations and tectonic evolution

Abstract: Geological Society of America. Special Paper, v. 358, p. 189-213, 2002. http://dx.doi.org/10.1130/0-8137-2358-2.187International audienc

Cited by 139 publications

References 59 publications

Distribution and Characters of Gas Hydrate Offshore of Southwestern Taiwan

Distribution and Characters of Gas Hydrate Offshore of Southwestern Taiwan

Campaigned GPS on Present-Day Crustal Deformation in Northernmost Longitudinal Valley Preliminary Results, Hualien Taiwan

Coseismic displacement and tectonic implication of 1951 Longitudinal Valley earthquake sequence, eastern Taiwan

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