Drainage control of Eocene to Miocene sedimentary records in the southeastern margin of Eurasian Plate

Shao, Lei; Cui, Yuchi; Stattegger, Karl; Zhu, Weilin; Qiao, Peijun; Zhao, Zhidan

doi:10.1130/b32053.1

Cited by 44 publications

(35 citation statements)

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“…The latest ‘source‐to‐sink’ path studies in the northern SCS found that the sources of sediments in the region changed greatly during the Eocene to Early Oligocene, the ancient ‘Kontum‐Ying‐Qiong’ river that originated after the uplift of the western SCS was the main factor controlling the sediment source in the northern SCS, and this geological time period was also the time when the sedimentary environment changed the most in the SCS (Shao et al, 2019). Therefore, this research was carried out on the basis of many previous studies, and combining long‐term observational research results on provenance, geochronology, and palaeogeography (Cao, Shao, Qiao, Zhao, & van Hinsbergen, 2018; Chen et al, 2017; Galin, Breitfeld, Hall, & Sevastjanova, 2017; Keenan et al, 2016; Shao et al, 2016, 2018). Regional sedimentary evolution and palinspastic reconstructions were discussed with analysing the disappearance of the Proto‐SCS, the tectonic evolution of the SCS, and the relationship between tectonic evolution and sedimentary evolution, which will help us to better understand the Cenozoic geodynamic history of the SCS.…”

Section: Introductionmentioning

confidence: 99%

The response of Cenozoic sedimentary evolution coupled with the formation of the South China Sea

et al. 2020

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We systematically expound the processes of Cenozoic sedimentary evolution in the South China Sea (SCS) regions by synthesizing relevant previous research and our own long-term sedimentological work. The process of changes in Cenozoic sedimentary environments and palaeogeography can be divided into three stages corresponding to the tectonic evolution of the SCS. Stage I, the formation and development of the Proto-South China Sea (Proto-SCS) from the Late Mesozoic to Early Cenozoic; the SCS was a vast erosion zone, and terrestrial lacustrine deposits were only distributed sporadically. Stage II, the subduction of the Proto-SCS and the opening of the SCS since the Late Eocene. The northern basins of the SCS gradually changed from terrestrial to marine environments. Southern basins were affected by the disappearance of the Proto-SCS in the early stage. The distribution of marine environments shrank in the Late Eocene-Early Oligocene, but as the SCS expanded, these marine environments gradually recovered. Stage III, the stagnation and atrophy of SCS expansion from the Late Miocene to the present. The sedimentary environment of the SCS is basically stable in this stage. The most prominent feature of sedimentary evolution is the development and destruction of carbonate platforms.

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Section: Introductionmentioning

confidence: 99%

The response of Cenozoic sedimentary evolution coupled with the formation of the South China Sea

et al. 2020

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“…Potential sediment provenance trends derived from U‐Pb age spectra are shown in Figure 12. We analyzed 27 samples from potential sediment sources (Table S2) to subdivide them into three types: (1) rivers and hinterland areas surrounding the Xisha Trough (Figure 12a) (Cao et al, 2018; Clift et al, 2006; Hoang et al, 2009; Jonell et al, 2016; Yao et al, 2011; Shao et al, 2017; Sun et al, 2009; Wang et al, 2018; Xia et al, 2012; Xu et al, 2008), (2) basement rocks in the Xisha Trough and its corresponding shoulder areas (Figure 12b) (Cao et al, 2015; Cui et al, 2018; Wang et al, 2015; Xu et al, 2014; Zhu et al, 2017), and (3) Eocene and Oligocene sediments from the Pearl River Mouth Basin (Figure 12c) (Shao, Cao, et al, 2017; Shao et al, 2019). Magma addition in the basement of the Xisha Trough has been recorded by Wells XK1 (Zhu et al, 2017), B2, and B3 (Cui et al, 2018).…”

Section: U‐pb Ages From Detrital Zirconsmentioning

confidence: 99%

Rift Structure and Sediment Infill of Hyperextended Continental Crust: Insights From 3D Seismic and Well Data (Xisha Trough, South China Sea)

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Three‐dimensional seismic and well data from the deepwater Xisha Trough are used to investigate the rift structure and sediment infill of a region formed adjacently to the initial oceanic ridge of the South China Sea (SCS). The high‐quality data permitted a detailed analysis of features such as (1) detachment faults soling out at the Moho, (2) rotated and thinned continental blocks covered by thick sediment, and (3) changes in the location of basin depocenters resulting from detachment faulting. During the continental rifting phase (Eocene to earliest Oligocene), faulting was broadly distributed in the Xisha Trough and resulted in the generation of isolated grabens/half grabens filled by proximal sediment sources. During continental breakup in the Northwest Ocean Sector of SCS (Oligocene), extension became restricted to a narrow region where highly tilted continental blocks and thin crust were formed. Sediment was, at that time, fed to distal depocenters, which are presently bounded by listric faults rooted in a basal detachment. Later in a second stage (early Miocene), synchronously with continental breakup in the Southwest Ocean Sector of the SCS, the study area was blanketed by thick sediment. During the two continental breakup events, the hyperextended Xisha Trough was affected by closely spaced, small‐scale faults rather than large basement‐related structures. Our study highlights the effect of continental breakup as a way to broaden sediment influx from multiple sources into deepwater basins. As a corollary, this work recognizes two distinct breakup sequences in the Xisha Trough and concludes on their geodynamic significance to the SCS.

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“…A compilation of detrital zircon U-Pb age data of the Jurassic to Eocene strata from the northern South China Sea margin and the Jurassic to Miocene strata from the Palawan continental terrane, shown as a summary of sampling information and a list of U-Pb ages of each sample. The original published age data (Chen et al, 2017;Chen et al, 2016;Knittel et al, 2017;Lan et al, 2016;Li et al, 2012;Liu et al, 2017;Padrones et al, 2017;Shao et al, 2016;Shao et al, 2017a;Shao et al, 2018;Shao et al, 2017b;Suggate et al, 2014;Walia et al, 2012;Walia et al, 2013;Wang et al, 2017;Wang et al, 2016;Yan et al, 2018a;Yan et al, 2018b;Yui et al, 2012;Zhao, 2015), if available, are filtered with a cutoff criterion of both 10% discordance and 10% uncertainty (1σ). Ages of stratigraphic boundaries followed the International Chronostratigraphic Chart v2018/08.…”

Section: Supplemental Materialsmentioning

confidence: 99%

Supplemental Material: Formation and paleogeographic evolution of the Palawan continental terrane along the Southeast Asian margin revealed by detrital fingerprints

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2020

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Drainage control of Eocene to Miocene sedimentary records in the southeastern margin of Eurasian Plate

Cited by 44 publications

References 36 publications

The response of Cenozoic sedimentary evolution coupled with the formation of the South China Sea

The response of Cenozoic sedimentary evolution coupled with the formation of the South China Sea

Rift Structure and Sediment Infill of Hyperextended Continental Crust: Insights From 3D Seismic and Well Data (Xisha Trough, South China Sea)

Supplemental Material: Formation and paleogeographic evolution of the Palawan continental terrane along the Southeast Asian margin revealed by detrital fingerprints

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