Plate tectonic control on the formation and tectonic migration of Cenozoic basins in northern margin of the South China Sea

Wang, Pengcheng; Li, Sanzhong; Suo, Yanhui; Guo, Lingli; Wang, Guangzeng; Hui, Gege; Santosh, M.; Somerville, Ian D.; Li, Yang

doi:10.1016/j.gsf.2019.10.009

Cited by 36 publications

(17 citation statements)

References 88 publications

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“…After a long period and significant sinistral motion during the Mesozoic, the YYFZ was reactivated as a transfer zone as a whole during 65-35 Ma. Besides, the principal deformation zone along the NE-trending strike-slip fault controlled the development of a series of Paleogene half-grabens (Cheng et al, 2012;Li et al, 2012;Wang W et al, 2017;Wang et al, 2020;Wang et al, 2021;Zhan et al, 2021). A sinistral shear with a component of extensional deformation from 35 to 16.5 Ma; meanwhile, the sinistral motion was most intense from 21 to 16.5 Ma.…”

Section: Cenozoic Evolutionary History Of the Yyfzmentioning

confidence: 99%

“…During the Paleogene (ca. 65-55 Ma), the Pacific plate subducted beneath the Eurasian continent and interacted with mantle materials, which probably resulted in slab retreat of the Pacific Plate and subsequently induced the initial rifting in PRMB (Allen et al, 1998;Liu et al, 2017;Ren, 2018;Wang et al, 2020;Wang et al, 2021). During this period, the rifting activities occurred only in the northern depression zone (Wenchang Sag in the Zhu Ⅲ depression and Lufeng Sag of Zhu Ⅰ depression), and the study area (the Yangjiang Sag and the Yunkai Low Uplift) was an uplift area.…”

Section: Implication For Regional Tectonic Evolution and Geodynamics ...mentioning

confidence: 99%

“…Faults in the PRMB, especially the strike-slip ones, significantly impact basin formation and hydrocarbon accumulation (Hou et al, 2008;Cao et al, 2014). Previous studies indicated that many regional strike-slip fault zones develop in the PRMB and control its tectonic configuration (Figure 1; Li et al, 2012;Cheng et al, 2012;Wang et al, 2014;Wang W et al, 2017;Wang et al, 2020;Wang et al, 2021;Wang et al, 2022;Mu et al, 2022;Zhou et al, 2022). However, its formation mechanisms remain controversial.…”

Section: Introductionmentioning

confidence: 99%

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Cenozoic evolution of the Yangjiang-Yitong’ansha fault zone in the northern South China Sea: Evidence from 3D seismic data

Zhan

Wang

Peng³

et al. 2023

Front. Earth Sci.

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The Yanjiang-Yitong’ansha Fault Zone (YYFZ) traverses the Pearl River Mouth Basin (PRMB) and plays an essential role in basin formation and hydrocarbon accumulation in the PRMB. Because of the lack of seismic data, its distribution, evolution, and effect on the basin evolution in the Cenozoic are poorly known. Based on a detailed interpretation of 3D multi-channel seismic data and previous research results, the YYFZ was identified and characterized. It comprises a series of NW-trending strike-slip faults that exhibit horsetail and en echelon structures in the map view and flower-like or Y-shaped structures in the profile view. By comprehensively analyzing the Paleogene migration of depocenters, activity characteristics of the YYFZ-related faults, and the relationships between faults and sedimentary sequences along the YYFZ, we propose the sinistral motion of the YYFZ initiated at about 35 Ma. The YYFZ served as a transfer zone during the intense rifting in the PRMB from 65 to 35 Ma. Then due to the combined effect of the Indian-Eurasian collision to the west, the Pacific subduction to the east, and the proto-SCS slab-pull to the south, it became a sinistral transtensional fault from 35 Ma to 16.5 Ma. Our results highlight the significant role of the NW-trending fault systems in the basin formation and the regional tectonic evolution of the PRMB.

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Section: Cenozoic Evolutionary History Of the Yyfzmentioning

confidence: 99%

Section: Implication For Regional Tectonic Evolution and Geodynamics ...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Cenozoic evolution of the Yangjiang-Yitong’ansha fault zone in the northern South China Sea: Evidence from 3D seismic data

Zhan

Wang

Peng³

et al. 2023

Front. Earth Sci.

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“…The Qiongdongnan Basin is located at the northwest shelf of the South China Sea, which is a Cenozoic marginal sea type passive continental margin rift basin (Zhang et al, 2015b;Wang et al, 2020). According to the thickness of the strata, in conjunction with the main faults controlling the development of the basin, the Qiongdongnan Basin can be divided into three first-order structural units, namely the Northern Uplift zone, Central Depression zone, and Southern Uplift zone(including Southern Slop belt and Southern High-rise)..…”

Section: Regional Geological Settingmentioning

confidence: 99%

Geological Interpretation and Hydrocarbon Exploration Potential of Three Types of Mound‐shaped Reflectors in the Meishan Formation, Southern Qiongdongnan Basin

Feng

Ren

et al. 2021

Acta Geologica Sinica (Eng)

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Many mound-shaped reflectors with different features and shapes are evident in the Upper Member of the Meishan Formation from seismic profiles taken in the deep-water area of the Southern Qiongdongnan Basin. Based on the drilling, 2D and 3D seismic data from the study area, descriptions of the seismic reflection characteristics as well as the geometric shape, wave impedance inversion, analogy and comparative analyses are carried out. Taken in conjunction with research on the paleostructure and paleosedimentary background, we consider that the mound-shaped seismic reflectors are distributed in the Southern Slop belt and the Southern High-rise of the Qiongdongnan Basin, which can be subdivided into three types: reefs, contourite mounds and magmatic diapirs. The first type, reefs, includes patch reefs, platform marginal reefs and pinnacle reefs. Patch reefs present mound-shaped seismic facies with medium frequency and a moderately strong amplitude, being distributed at the uplift of the fault control platform on the Southern Slop belt. The platform marginal reefs have flat mound-shaped seismic facies with strong amplitude and medium frequency, developing at the margin of the carbonate platform in the Southern High-rise. The pinnacle reefs have mound-shaped seismic facies with strong amplitude and medium frequency and are developed on an isolated volcanic cone. The boundaries between individual reefs are clear on the seismic section, with reef ridge and reef ditch developed, the phenomenon of 'front product' being visible within, two-way superelevation between wings is developed and they exist visibly as mounds in any viewed direction of the crosssection. They are slightly asymmetrical in the direction perpendicular to the paleodepth, the reef body being steep near the deep-water side, while being gentle near the shallow water side. The wave impedance of a patch reef is about 7 kg/m 3 ×m/s, while the wave impedance of a platform marginal reef is about 7.5 kg/m 3 ×m/s. The second type-contourite moundsare mainly developed under the slope break of the southern slope fault control platform's edge. They are subdivided into two types: conical and flat. The former has mound-shaped seismic facies with medium-strong amplitude and low frequency, the latter having mound-shaped seismic facies with medium amplitude and low frequency. The internal texture of the mounds is not clear on the seismic section, with the boundaries between contourite mounds being blurred. They are mound-shaped only in cross-section, being banded in the extending direction. The upper surface of a single contourite mound is relatively gentle near the deep-water side, while being steep near the shallow water area. The wave impedance of contourite mounds is about 5.8 kg/m 3 ×m/s, which is speculated to represent a marly to calcareous clastic deposit. The third type is the magmatic diapir, which has 'roots'. They have a dome-shaped upper boundary, are bottomless, with a chaotic interior. They penetrated multiple formations, opening towards the base. There ar...

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“…However, one boundary (represented by the green line) has only been detected by this new proposed approach. This boundary is introduced as a spreading axis or spreading ridges of the South China Sea (or the East Vietnam Sea), but isn't described detail (Zhao al., 2020;Wang et al, 2020;Zhang et al, 2018;Ding et al, 2018;Pubellier et al, 2017;Claude et al, 2016). In some paper, this boundary isn't described (Dung et al, 2013;Hiep N., 2005) and, consequently, it reveals a new result for the study area.…”

Section: Real Data Applicationmentioning

confidence: 99%

Estimating the Extreme Values in Gridding Data using Gauss Elimination Method: A New Approach in Potential Field Processing

Dung

Gómez-Ortíz

Abdulrazzaq³

et al. 2021

IGJ

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The position of a maximum point of a function depends on its coefficients and order. The maximum horizontal gradient method is a popular method that greatly contributes to the detection of maximum points and approximation of geological structures edges. By adopting a mathematical logic, Blakely and Simpson established a quadratic function based on the characteristic of three points of a straight line in the fundamental directions. However, for potential field data like gravity and magnetic data, the coefficients of a quadratic function in each direction are not only dependent on the values of three points on a straight line, but also, they depend on the values of the surrounding points. This article proposes an algorithm which can detect maximum points more effectively in order to delineate geological structures boundaries from potential field data. The proposed algorithm uses a 3×3 neighborhood data grid to establish a two-variables function and to determine its coefficients by applying the Gaussian elimination method. After the two-variables function has been established, the algorithm estimates any extreme points and their positions from a set of four single-variable functions which correspond to the horizontal, vertical and the two diagonal directions by the cases x = 0, y = 0, y = -x and y = x of the main function. Finally, the conditions to detect the maximum point from the extreme points are defined. The validity of the algorithm was demonstrated on synthetic datasets generated by two different model structures. A real data application of the method has also been realized by estimating the geological boundaries by gravity data in the Vietnam’s continental shelf. The results obtained from the synthetic applications of the algorithm proved that it can determine more maximum points as compared to Blakely and Simpson method, and as a result, in all the test cases, it has drawn the real boundaries of the model structures more accurately. The application results of the method on real data revealed new boundary delineations in the research area, interpreted to be faults or fractures which lies between deep trench in the East Vietnam Sea.

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Plate tectonic control on the formation and tectonic migration of Cenozoic basins in northern margin of the South China Sea

Cited by 36 publications

References 88 publications

Cenozoic evolution of the Yangjiang-Yitong’ansha fault zone in the northern South China Sea: Evidence from 3D seismic data

Cenozoic evolution of the Yangjiang-Yitong’ansha fault zone in the northern South China Sea: Evidence from 3D seismic data

Geological Interpretation and Hydrocarbon Exploration Potential of Three Types of Mound‐shaped Reflectors in the Meishan Formation, Southern Qiongdongnan Basin

Estimating the Extreme Values in Gridding Data using Gauss Elimination Method: A New Approach in Potential Field Processing

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