THE STRUCTURAL FEATURES OF XISHA TROUGH BASIN

ZHONG Guangjian; FENG Changmao; WEI Zhenquan

doi:10.3724/SP.J.1140.2012.03063

2012 Vol. 32, No. 3

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ZHONG Guangjian, FENG Changmao, WEI Zhenquan. THE STRUCTURAL FEATURES OF XISHA TROUGH BASIN[J]. Marine Geology & Quaternary Geology, 2012, 32(3): 63-86. doi: 10.3724/SP.J.1140.2012.03063

Citation:

ZHONG Guangjian, FENG Changmao, WEI Zhenquan. THE STRUCTURAL FEATURES OF XISHA TROUGH BASIN[J]. Marine Geology & Quaternary Geology, 2012, 32(3): 63-86. doi: 10.3724/SP.J.1140.2012.03063

THE STRUCTURAL FEATURES OF XISHA TROUGH BASIN

1 China University of Geosciences, Beijing 100083;
2 Guangzhou Marine Geological Survey, Guangzhou 510760

Received Date: 21 October 2011

Revised Date: 14 March 2012

Abstract

Abstract

The Xisha Trough Basin, located on the continental slope of the northern South China Sea, is a Cenozoic deepwater basin. The sediment fill in the basin is about 1500~8000m in thickness, and becomes thinner from the center towards north and south. The sediments show a zonal distribution pattern in north-south direction. In seismic profiles, there is double-layer structure, of which the upper is formed with subsidence and the lower with rifting. The structures formed in the rifting stage were mainly of "Domino-style of half-graben", a series of half-graben controlled by major faults on one side (F1, F2, F3, F4, F5). The basin has experienced two stages of evolution:the first stage underwent rifting through Paleocene-Oligocene and filled with lacustrine deposits, the second stage underwent subsidence through Miocene-Quaternary and filled shallow or bathyal sediments.
- deep water /
- geological structures /
- the Xisha Trough Basin /

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References

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