Is the Lishan fault of Taiwan active?

Kuo-Chen, Hao; Wu, Francis T.; Chang, Wu; Chang, C.; Cheng, Ching‐Yu; Hirata, Naoshi

doi:10.1016/j.tecto.2015.09.002

Cited by 12 publications

(7 citation statements)

References 19 publications

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“…We find a total of 1135 detections during the full day of data ( Figure S7). These detections show again that locations follow a linear trend between the depths of 20 and 35 km, parallel to the inferred projection of the Chaochou-Lishan Fault [Kuo-Chen et al, 2015;Rau et al, 2012;Wiltschko et al, 2010]. We located these detections as before by using relative arrival times from cross correlation and find a similar clustering to that shown for the ambient tremor of January 2009 (Figures 1c and 1d).…”

Section: Comparing the Lfe Templates To Local Earthquakessupporting

confidence: 71%

“…We located these detections as before by using relative arrival times from cross correlation and find a similar clustering to that shown for the ambient tremor of January 2009 (Figures 1c and 1d). These detections show again that locations follow a linear trend between the depths of 20 and 35 km, parallel to the inferred projection of the Chaochou-Lishan Fault [Kuo-Chen et al, 2015;Rau et al, 2012;Wiltschko et al, 2010].…”

Section: 1002/2016gl072148supporting

confidence: 63%

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Tectonic tremor and LFEs on a reverse fault in Taiwan

Aguiar

Chao

Beroza

2017

Geophysical Research Letters

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We compare low‐frequency earthquakes (LFEs) from triggered and ambient tremor under the southern Central Range, Taiwan. We apply the PageRank algorithm used by Aguiar and Beroza (2014) that exploits the repetitive nature of the LFEs to find repeating LFEs in both ambient and triggered tremor. We use these repeaters to create LFE templates and find that the templates created from both tremor types are very similar. To test their similarity, we use both interchangeably and find that most of both the ambient and triggered tremor match the LFE templates created from either data set, suggesting that LFEs for both events have a common origin. We locate the LFEs by using local earthquake P wave and S wave information and find that LFEs from triggered and ambient tremor locate to between 20 and 35 km on what we interpret as the deep extension of the Chaochou‐Lishan Fault.

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Section: Comparing the Lfe Templates To Local Earthquakessupporting

confidence: 71%

Section: 1002/2016gl072148supporting

confidence: 63%

Tectonic tremor and LFEs on a reverse fault in Taiwan

Aguiar

Chao

Beroza

2017

Geophysical Research Letters

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“…The uplift of relatively high Vp material (Figure a) indicates that the Mesozoic basement rocks are involved in the thrusting. On the shelf part of the study area, seismicity is largely concentrated within the inverting Hsuehshan Trough, where it forms well‐defined clusters along the basin‐bounding faults (Figures a and ) [e.g., Wu et al ., ; Camanni et al ., , ; Kuo‐Chen et al ., ]. We suggest that the roughly north‐south oriented basin faults of the Hsuehshan Trough are ideally oriented for reactivation and the incorporation of basement rocks into the thrusting.…”

Section: Discussionmentioning

confidence: 93%

“…There is, for example, a very different style of basement involvement between the shelf and the necking zone. On the shelf, the roughly northeast oriented Hsuehshan Trough is inverting along almost north‐south striking basin‐bounding faults that penetrate deep into the crust [e.g., Wu et al ., ; Camanni et al ., ; Kuo‐Chen et al ., ], exposing deep levels of the synrift sediments that, along the eastern part of the Hsuehshan Range, have been metamorphosed to lower greenschist facies [e.g., Clark et al ., ; Beyssac et al ., ; Simoes et al ., ] and have a penetrative pressure solution cleavage [e.g., Clark et al ., ; Tillman and Byrne , ; Fisher et al ., ; Brown et al ., ]. The uplift of relatively high Vp material (Figure a) indicates that the Mesozoic basement rocks are involved in the thrusting.…”

Section: Discussionmentioning

confidence: 99%

“…In this northern part of the study area, the Hsuehshan Range is the most seismically active part of the fold‐and‐thrust belt, with significant seismicity extending to over 30 km depth (Figure ). The deepest seismicity in the Hsuehshan Range is seen in the cross section to form a steeply west dipping cluster that is interpreted to be associated with the Lishan fault (LF in Figures a and ) [see Wu et al ., ; Brown et al ., ; Camanni et al ., , ; Kuo‐Chen et al ., ]. In the study area, the Hsuehshan Range has the highest elevations in the fold‐and‐thrust belt.…”

Section: The South Central Taiwan Fold‐and‐thrust Beltmentioning

confidence: 99%

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How the structural architecture of the Eurasian continental margin affects the structure, seismicity, and topography of the south central Taiwan fold‐and‐thrust belt

et al. 2017

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Studies of mountain belts worldwide show that along‐strike changes are common in their foreland fold‐and‐thrust belts. These are typically caused by processes related to fault reactivation and/or fault focusing along changes in sedimentary sequences. The study of active orogens, like Taiwan, can also provide insights into how these processes influence transient features such as seismicity and topography. In this paper, we trace regional‐scale features from the Eurasian continental margin in the Taiwan Strait into the south central Taiwan fold‐and‐thrust belt. We then present newly mapped surface geology, P wave velocity maps and sections, seismicity, and topography data to test the hypothesis of whether or not these regional‐scale features of the margin are contributing to along‐strike changes in structural style, and the distribution of seismicity and topography in this part of the Taiwan fold‐and‐thrust belt. These data show that the most important along‐strike change takes place at the eastward prolongation of the upper part of the margin necking zone, where there is a causal link between fault reactivation, involvement of basement in the thrusting, concentration of seismicity, and the formation of high topography. On the area correlated with the necking zone, the strike‐slip reactivation of east northeast striking extensional faults is causing sigmoidal offset of structures and topography along two main zones. Here basement is not involved in the thrusting; there is weak focusing of seismicity and localized development of topography. We also show that there are important differences in structure, seismicity, and topography between the margin shelf and its necking zone.

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