Zengmu Xi fault on the western-border of South China Sea and its control over the sedimentation of the Basin

DU Wenbo; QIU Yan; HUANG Wenkai; HAN Bing

doi:10.16562/j.cnki.0256-1492.2020050902

Marine Geology & Quaternary Geology > 2021 > 41(2): 100-108. > DOI: 10.16562/j.cnki.0256-1492.2020050902

DU Wenbo, QIU Yan, HUANG Wenkai, HAN Bing. Zengmu Xi fault on the western-border of South China Sea and its control over the sedimentation of the Basin[J]. Marine Geology & Quaternary Geology, 2021, 41(2): 100-108. DOI: 10.16562/j.cnki.0256-1492.2020050902

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Zengmu Xi fault on the western-border of South China Sea and its control over the sedimentation of the Basin

1.
Guangzhou Marine Geological Survey, Key Laboratory of Marine Mineral Resources, Ministry of Natural Resources, Guangzhou 510075, China
2.
Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou 511458, China

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Received Date: May 08, 2020
Revised Date: September 23, 2020
Available Online: April 07, 2021

Graphical Abstract

Abstract

Abstract

Reprocessed multi-channel seismic data collected from the Zengmu Basin is interpreted in this paper combined with gravity and magnetic anomaly data. It is confirmed that the “Zengmu Xi Fault” is located in the southernmost part of the western-margin of the South China Sea in a nearly S-N direction. The structural characteristics of the fault, especially its composition and spatial framework, are carefully described and explained. It is found that the Zengmu Xi fault is composed of two faults, the Fault 1 and Fault 2. The Fault 1 is located at 4°30′N～7°00′N, 109°30′～110°E, with a main tendency to ESE, and a strike towards NEN. It is a large boundary controlling fault of the Kangxi Depression, while the fault 2 is distributed between 3° and 5°N, 109°30′E and 110°30′E, with a main fault tendency to NE and a strike towards NNW. It is a large boundary controlling fault of the Tatao horst graben. The southward extension of Zengmu Xi fault 1 ends when it meets the fault 2. Upon the basis, the characteristics of the tectonic activity of the Zengmu Xi fault and its control over the depositional evolution of the Zengmu basin are analyzed and discussed.
- structural characteristic,
- subsidence rate,
- Zengmu Xi fault,
- Zengmu Basin,
- western-margin of the South China Sea

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References (22)

References

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Zengmu Xi fault on the western-border of South China Sea and its control over the sedimentation of the Basin