A study of extension of Lianhuashan fault in Guangdong to adjacent marine space based on remote sensing and aeromagnetic data
Lingyan XIA1,2, Changsong LIN1, Xiao LI2, Yue HU2
1.School of Ocean Sciences, China University of Geosciences, Beijing 100083, China 2.China Aero Geophysical Survey and Remote Sensing Center for Natural Resources, Beijing 100083, China
Studies suggest that Lianhuashan fault has extended to marine space. Based on remote sensing image interpretation using terrestrial ETM+ data and structural characteristics of aeromagnetic deduced faults in marine space, the authors analyzed sedimentary control of the Lianhuashan fault on the Pearl River Mouth Basin. On the one hand, the result of remote sensing interpretation shows that Lianhuashan fault zone presents a NE-trending fascicular linear feature with two branches extending into the sea in SW direction. The main fault belt is a mountain with low hills and plains on both sides characterized by steepness in the east and gentleness in the west. The authors found that the NE-trending straight line river is developed along the fault zone, and the eastern side of mountains develops deep "V" ravines, vertical cliffs or fault triangles. On the other hand, the magnetic field feature reveals that the branch has extended to the north of Pearl River Mouth Basin and the south branch has passed through Pearl River Mouth Basin to the south of Hainan Island. Magmatic activity is developed obviously along the fault belt. The Lianhuashan fault zone is the dividing line of different magnetic fields, which dominate the NEE-trending basement structure of the Pearl River Mouth Basin with deep source magma activity. It is the first stage deep fault in the Pearl River Mouth Basin.
夏玲燕, 林畅松, 李筱, 胡悦. 基于遥感和航磁多源数据研究莲花山深大断裂在广东及相邻海域的延伸[J]. 国土资源遥感, 2019, 31(1): 247-254.
Lingyan XIA, Changsong LIN, Xiao LI, Yue HU. A study of extension of Lianhuashan fault in Guangdong to adjacent marine space based on remote sensing and aeromagnetic data. Remote Sensing for Land & Resources, 2019, 31(1): 247-254.
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