The Late Pleistocene Tectonic Activity in Hong Kong
详细信息
- 责任者：Ding Yuanzhang (Earthquake Administration of Guangdong Province ; Guangzhou 510070 ; China) ; Deng Lijun
- 刊名：South China Journal of Seismology
- 出版年：2013
- 卷期：33(2)
- 关键词：活动断层 ; active faults ; 香港 ; Hong Kong
- 页码：p.1-13
- 图表：illus., 1 table, 32 refs.
- 分类号：0300
- issnNo：ISSN1001-8662
- isbnNo：CN44-1266/P
摘要
The most recent tectonic movement of the NW-trending fault at the Ho Lek Pui area was likely to have occurred during the late Pleistocene.The fault activity have ceased in the Holocene.Possible signs of mass wasting processes,including landslides,debris flows and displacement of very large boulders in the late Pleistocene have been identified in different parts of Hong Kong,such as the Ho Lek Pui,Wong Chuk Yeung,Nam Shan and Pui O areas.Some of the landslide debris lobes were found to be the products of multiple slope failures.Based on an integrated analysis of the distribution,scale and quantity of the potential evidence for neotectonic movement,it is suggested that Hong Kong may have been affected by intensive seismic shaking clustered within tens of thousands of years in the late Pleistocene,with intensity values of possibly between IX and X.It is found that in the recent 10 000 years,the tectonic activity and seismicity in the region have diminished,so that the intensity of ground motion has been reduced correspondingly.
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