A REVIEW ON STUDY OF ACTIVITY OF XIANSHUIHE FAULT ZONE SINCE THE HOLOCENE

XIONG Tan-yu; YAO Xin; ZHANG Yong-shuang

Volume 16 Issue 2

Jun. 2010

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XIONG Tan-yu, YAO Xin, ZHANG Yong-shuang, 2010. A REVIEW ON STUDY OF ACTIVITY OF XIANSHUIHE FAULT ZONE SINCE THE HOLOCENE. Journal of Geomechanics, 16 (2): 176-188.

Citation:

XIONG Tan-yu, YAO Xin, ZHANG Yong-shuang, 2010. A REVIEW ON STUDY OF ACTIVITY OF XIANSHUIHE FAULT ZONE SINCE THE HOLOCENE. Journal of Geomechanics, 16 (2): 176-188.

Citation:

XIONG Tan-yu, YAO Xin, ZHANG Yong-shuang, 2010. A REVIEW ON STUDY OF ACTIVITY OF XIANSHUIHE FAULT ZONE SINCE THE HOLOCENE. Journal of Geomechanics, 16 (2): 176-188.

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A REVIEW ON STUDY OF ACTIVITY OF XIANSHUIHE FAULT ZONE SINCE THE HOLOCENE

XIONG Tan-yu^{1, 2
,},
YAO Xin^{1, 2},
ZHANG Yong-shuang^{1, 2}

1.
Key Laboratory of Neotectonic Movement and Geohazard, Ministry of Land and Resources, Beijing 100081
2.
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081

More Information

Received: 2010-05-17
Published: 2010-06-01

Abstract

Abstract

The Xianshuihe fault zone is a large active seismic-genetic zone in mountainous regions of southwest China. Based on previous studies, in combination with field investigation, the authors systemically summarized the research status about Holocene activity of Xianshuihe fault zone. The fault zone is divided by the Huiyuan Temple into two segments, the northwestern and southeastern segments, which are sub-divided into eight parts. Since the Holocene, the fault has occurred as a strike slip fault with thrust characteristic. The whole strike-slip generally displays an activity rate of about 10mm/a and a vertical deformation of 2mm/a or less. The activity rate is changeable in the fault, e.g., 10~20mm/a in the northwestern segment but smaller than 10mm/a in the southeastern segment. Accordingly the seismic activity is significantly stronger in the northwestern segment than in the southeastern segment. The earthquakes occurred with skip metastasis and have recurrent nature in situ. The surface rupture characteristics recorded in the historical earthquakes are consistent with those reported in the earthquake surface rupture. The research on seismic risk assessment along the Xianshuihe fault zone needs to be greatly improved.
- Xianshuihe fault zone,
- activity rate,
- seismic activity,
- seismic risk,
- surface rupture

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References(47)

References

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