A new consideration on the genetic mechanism of the central canyon in the Qiongdongnan Basin, the northern South China Sea

Wang Yahui; Zhang Daojun; Zhao Pengxiao; Chen Yang; Huang Can; Su Yufeng

doi:10.3969/j.issn.0253-4193.2016.11.009

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Wang Yahui, Zhang Daojun, Zhao Pengxiao, Chen Yang, Huang Can, Su Yufeng. A new consideration on the genetic mechanism of the central canyon in the Qiongdongnan Basin, the northern South China Sea[J]. Haiyang Xuebao, 2016, 38(11): 97-104. doi: 10.3969/j.issn.0253-4193.2016.11.009

Citation:

Wang Yahui, Zhang Daojun, Zhao Pengxiao, Chen Yang, Huang Can, Su Yufeng. A new consideration on the genetic mechanism of the central canyon in the Qiongdongnan Basin, the northern South China Sea[J]. Haiyang Xuebao, 2016, 38(11): 97-104. doi: 10.3969/j.issn.0253-4193.2016.11.009

Citation:

Wang Yahui, Zhang Daojun, Zhao Pengxiao, Chen Yang, Huang Can, Su Yufeng. A new consideration on the genetic mechanism of the central canyon in the Qiongdongnan Basin, the northern South China Sea[J]. Haiyang Xuebao, 2016, 38(11): 97-104. doi: 10.3969/j.issn.0253-4193.2016.11.009

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A new consideration on the genetic mechanism of the central canyon in the Qiongdongnan Basin, the northern South China Sea

doi: 10.3969/j.issn.0253-4193.2016.11.009

1.
Zhanjiang Branch of CNOOC Ltd., Zhanjiang 524057, China
2.
Oil field Engineering Research Institute Zhanjiang Central Laboratory, CNOOC Energy Technology & Services, Zhanjiang 524057, China

Received Date: 2016-04-20
Rev Recd Date: 2016-07-15

Abstract

Abstract

Based on regional tectonic fracture system and gradually shape the canyon area high resolution 3D seismic data of fine resolution, realize the central valley of Qiongdongnan Basin formation mechanism in addition to the late Miocene tectonic changes, large-scale sea level falling, adequate supply source and groove type ancient topography and other related factors, there is another very important factor:the existence of early concealed fault zone at the bottom of the canyon. Research shows that parallel to the development in the central depression belt in Qiongdongnan Basin shelf slope break large-scale deep canyon, at the bottom of the canyon development large strike-slip faults and strike-slip faults to derive a series of secondary fault formation strata fracture zone, to realize the formation of the canyon, scale and distribution direction are affected by faults. Accordingly, the filling and evolution of the canyon, sea level change, is also the source of gravity flow function of the process of interaction and mutual superposition of many factors. To study experienced chasmic stage and basin evolution process is formed during the subsidence stage of the basin is of important guiding significance for large canyon.
- northern South China Sea,
- Qiongdongnan Basin,
- deep water,
- central canyon,
- genetic mechanism

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References(27)

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