New magnetic data indicate successive ridge jumps and rotations of seafloor spreading in the South China Sea

2020 ◽  
Author(s):  
Jiabiao Li ◽  
Qingsheng Guan ◽  
Tao Zhang ◽  
Brian Taylor ◽  
Jinyao Gao
Keyword(s):  
South China Sea ◽  
South China ◽  
Seafloor Spreading ◽  
The South China Sea ◽  
Magnetic Data ◽  
The South ◽  
China Sea

Jump event of mid-ocean ridge during the eastern subbasin evolution of the South China Sea

2016 ◽  
Vol 4 (3) ◽  
pp. SP67-SP77 ◽  
Author(s):  
Yan Qiu ◽  
Yingmin Wang ◽  
Wenkai Huang ◽  
Weiguo Li ◽  
Haiteng Zhuo ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Seafloor Spreading ◽  
The South China Sea ◽  
Magnetic Data ◽  
The South ◽  
Tectonic Event ◽  
China Sea ◽  
Mid Ocean Ridge ◽  
Ocean Ridge

The South China Sea is one of the largest marginal seas in the Western Pacific region, and it has been widely accepted that the evolution of the basin and the development of its oceanic crusts is closely linked to seafloor spreading. A great controversy, however, is around whether or not there was a jump of mid-ocean ridges during seafloor spreading, particularly in the eastern South China Sea subbasin. A tectonostratigraphic interpretation using high-resolution seismic data demonstrated that: (1) a southward jump event of the mid-ocean ridge took place in the eastern subbasin during the seafloor spreading; (2) the orientation of the mid-ocean ridge had dramatically changed after the event resulting in that the abandoned mid-ocean ridge is along an east–west direction, whereas the younger one is generally east–northeast/west–southwest oriented; (3) the corresponding surface caused by the jump tectonic event and the pre-event sequence can be traced throughout the earlier formed oceanic crust; and (4) paleo-magnetic data showed that the event occurred at approximately 25–23.8 Ma. The results of this study could be used to better understand the evolution and filling of the South China Sea and other associated marginal basins.

Oceanic crustal structures and temporal variations of magmatic budget during seafloor spreading in the East Sub-basin of the South China Sea

2021 ◽  
Vol 436 ◽  
pp. 106475
Author(s):  
Junhui Yu ◽  
Pin Yan ◽  
Yan Qiu ◽  
Matthias Delescluse ◽  
Wenkai Huang ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Temporal Variations ◽  
Seafloor Spreading ◽  
The South China Sea ◽  
The South ◽  
China Sea ◽  
Crustal Structures

The onset of seafloor spreading at the northeastern continent-ocean boundary of the South China Sea

2021 ◽  
pp. 105255
Author(s):  
Yonglin Wen ◽  
Chun-Feng Li ◽  
Lijie Wang ◽  
Yutao Liu ◽  
Xi Peng ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Seafloor Spreading ◽  
The South China Sea ◽  
The South ◽  
China Sea ◽  
Ocean Boundary

Research progress on the Zhongnan-Liyue Fault Zone in the South China Sea Basin

2020 ◽  
Author(s):  
Ziying Xu ◽  
Jun Wang ◽  
Hongfang Gao ◽  
Yongjian Yao
Keyword(s):  
Spatial Distribution ◽  
South China Sea ◽  
Fault Zone ◽  
South China ◽  
The South China Sea ◽  
Magnetic Data ◽  
Tectonic Deformation ◽  
The South ◽  
China Sea ◽  
The North

<p>We give a review of the up-to-date research situation about The Zhongnan-Liyue Fault Zone (ZLFZ), than analyze the spatial distribution and tectonic deformation feature of the ZLFZ based on the geophysical data including topographic, seismic, gravity and magnetic data. The results show that the ZLFZ has obvious north-south segmentation characteristics in in the South China Sea Basin. The north section, which is between northwest sub-basin and east sub-basin, is a narrow zone with the width of ~16 km, and is NNW trend from 18°N,115.5°E to 17.5°N,116°E. Meanwhile ,the south section, which is between southwest sub-basin and east sub-basin, is a wide zone with the width of 60-80 km, and is NNW trend from the east of ZhongshaBank to the west of LiyueBank. The main fault of the ZLFZ is NNW trend along the seamounts ridge of Zhongnan. the ZLFZ of transition region is NNE trend from the north section to the south section. According the sub-basin’s sedimentary thickness and oceanic crust thickness exist obvious difference, on both sides of the ZLFZ, we speculate that the ZLFZ play an important role on geological structure of sub-basin. According to the chang of crustal structure, We speculate that the ZLFZ is at least a crustal fracture zone.</p><p><strong>Key words: </strong>South China Sea Basin; Zhongnan-Liyue Fault Zone; Spatial distribution; Tectonic deformation<strong> </strong></p><p><strong>Foundation item:</strong> National Natural Science Foundation of China (41606080, 41576068); The China Geological Survey Program (GZH201400202, 1212011220117, DD20160138, 1212011220116).</p>

Reply to Chang et al., 2014, Evolution of the South China Sea: Revised ages for breakup and seafloor spreading

2015 ◽  
Vol 59 ◽  
pp. 679-681 ◽  
Author(s):  
Udo Barckhausen ◽  
Martin Engels ◽  
Dieter Franke ◽  
Stefan Ladage ◽  
Manuel Pubellier
Keyword(s):  
South China Sea ◽  
South China ◽  
Seafloor Spreading ◽  
The South China Sea ◽  
The South ◽  
China Sea

Ridge jump reorientation of the South China Sea revealed by high‐resolution magnetic data

Terra Nova ◽  
2021 ◽  
Author(s):  
Qingsheng Guan ◽  
Tao Zhang ◽  
Brian Taylor ◽  
Jinyao Gao ◽  
Jiabiao Li
Keyword(s):  
High Resolution ◽  
South China Sea ◽  
South China ◽  
The South China Sea ◽  
Magnetic Data ◽  
The South ◽  
China Sea
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