A continental slope stability evaluation in the Zhujiang River Mouth Basin in the South China Sea

2014 ◽  
Vol 33 (11) ◽  
pp. 155-160 ◽  
Author(s):  
Ke Liu ◽  
Jianhua Wang
2007 ◽  
Vol 68 (1) ◽  
pp. 162-172 ◽  
Author(s):  
Sébastien Boulay ◽  
Christophe Colin ◽  
Alain Trentesaux ◽  
Stéphane Clain ◽  
Zhifei Liu ◽  
...  

AbstractGrain-size analyses, coupled with end-member modelling, have been performed on the terrigenous fraction of two Leg 184 Ocean Drilling Program sites (1144 and 1146) from the South China Sea. The grain-size distributions over the last 1.8 Ma enable a new interpretation of their connections to sea-level variations and East Asian monsoon strength. Previous investigations in this area have associated grain-size variability with enhanced eolian input during glacial stages. End-member modelling downgrades the importance of this eolian contribution and indicates that the sediments can be described as a mixture of three end-members: fluvial mud inputs, shelf reworking and river mouth migration. Grain-size variations in the Pleistocene section of the cores indicate a multiple-stage evolution: (i) from 1.8 to 1.25 Ma, the downcore grain-size variations are low but show a correspondence between monsoon rainfall intensity and the fine grain-sized fluvial inputs; no link with sea-level variations is noticeable; (ii) from 1.25 to 0.9 Ma, there is an increase (decrease) in the intermediate (fine) end-member (∼ 100 kyr cycle) that is associated with the onset of a stronger summer monsoon and modest shelf reworking; (iii) from 0.9 to 0 Ma the grain-size record is dominated by global sea-level variations; each glacial stage is associated with extensive shelf reworking and conveyance of coarse particles to the basin.


2020 ◽  
Vol 147 (3) ◽  
pp. EL209-EL214
Author(s):  
Jin Liu ◽  
Zhaohui Peng ◽  
Zhenglin Li ◽  
Wenyu Luo ◽  
Xishan Yang

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