Seismic geomorphology and lithology of the early Miocene Pearl River Deepwater Fan System in the Pearl River Mouth Basin, northern South China Sea

Zhou, Weili; Gao, Xili; Wang, Yingmin; Zhuo, Haiteng; Zhu, Weilin; Xu, Qiang; Wang, Yongfeng

doi:10.1016/j.marpetgeo.2015.09.006

Cited by 25 publications

(13 citation statements)

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“…The unique geological settings and past sea-level changes may have played a significant role in shaping the population structure of freshwater fish, with some enhanced but some suppressed interdrainage dispersal. The South China Sea level rose continuously from the early Miocene (23.03-15.97 mya) to the late Pliocene (3.60-2.58 mya) (Wang and Li, 2009;Ding et al, 2013;Zhou et al, 2015). Hence, the two main islands, Hong Kong and Lantau, were isolated from the Mainland for a prolonged period of time during a high sea level stand (Fyfe, 2000;Ding et al, 2013;Zhou et al, 2015), and so were their freshwater fauna on the islands from the Mainland counterpart.…”

Section: Introductionmentioning

confidence: 99%

“…The South China Sea level rose continuously from the early Miocene (23.03-15.97 mya) to the late Pliocene (3.60-2.58 mya) (Wang and Li, 2009;Ding et al, 2013;Zhou et al, 2015). Hence, the two main islands, Hong Kong and Lantau, were isolated from the Mainland for a prolonged period of time during a high sea level stand (Fyfe, 2000;Ding et al, 2013;Zhou et al, 2015), and so were their freshwater fauna on the islands from the Mainland counterpart. During the late Pleistocene (0.126-0.0177 mya), the sea level fluctuated rapidly with several major regressions recorded (Zong et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Genetic legacy of tertiary climatic change: a case study of two freshwater loaches, Schistura fasciolata and Pseudogastromyzon myersi, in Hong Kong

et al. 2017

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The high biodiversity and strong population structure of freshwater fauna has often been attributed to historical geological and climatic alterations. The impact of these historical changes on obligate freshwater species on a small geographical scale has not been well understood due to the lack of fine-scale comparative phylogeographic studies. Strong population structure has been reported in a goby and a caridean shrimp in Hong Kong, a small but highly developed city in South China, but the common drivers of population differentiation in freshwater fauna in this region remain unclear. This study examined the fine-scale phylogeographic patterns of two freshwater loaches, Schistura fasciolata and Pseudogastromyzon myersi in Hong Kong, using sequence data of mitochondrial control region and two nuclear markers (interphotoreceptor retinoid binding protein gene 2 and ribosomal protein S13 gene). Results show that they exhibit pronounced population structure as supported by high and significant Φ. Phylogenetic analyses based on the control region reveal six and three distinct lineages in S. fasciolata and P. myersi, respectively. Phylogeographic structure of both species generally follows the paleodrainage pattern, though P. myersi shows a shallower structure on the Mainland, perhaps due to their higher mobility. Most of these lineages diverged during the Pliocene and Late Pleistocene, a period with marked sea-level fluctuations. In a broader context, this suggests that sea-level fluctuation played an important role in shaping even the fine-scale population structure of freshwater fish in South China, implying that the genetic diversity of this fauna may be higher than expected.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Genetic legacy of tertiary climatic change: a case study of two freshwater loaches, Schistura fasciolata and Pseudogastromyzon myersi, in Hong Kong

et al. 2017

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“…The Baiyun movement (ca. 23.8 Ma) was a key timeline event in the Baiyun Sag, when the slope break jumped from the south to the north and the sedimentary environment changed from the continental shelf with neritic deposition to the continental slope with deep‐water deposition (Pang et al, ; Zhou, Gao, et al, ; Zhou, Wang, et al, ). The Dongsha Event (ca.10.5‐5.5 Ma) is generally thought to have had a peak activity at ca.…”

Section: Geological Settingmentioning

confidence: 99%

“…The postrift stage began in the Early Miocene and is still active. During this stage, deep marine depositional systems were developed within the Baiyun Sag (Zhujiang formation, Hanjiang formation, Yuehai formation, Wanshan formation, and Quaternary formation), with a total thickness of 2,000–3,500 m, and the mudstone in this stage acts as an excellent regional seal for hydrocarbon fluids (Huang et al, ; Zhou, Gao, et al, ; Zhou, Wang, et al, ; Figure ) .…”

Section: Geological Settingmentioning

confidence: 99%

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Petrography and geochemistry of Oligocene to Lower Miocene sandstones in the Baiyun Sag, Pearl River Mouth Basin, South China Sea: Provenance, source area weathering, and tectonic setting

Chen

et al. 2018

Geological Journal

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There is a controversy regarding the source area and weathering intensity of Oligocene to Lower Miocene sediments in the Baiyun Sag of the Pearl River Mouth Basin.Detrital modes, geochemistry, heavy mineral data, and detrital zircon U-Pb ages were analysed to understand the provenance, source area weathering, and tectonic setting of Oligocene to Lower Miocene sandstones in the Baiyun Sag. Petrographic data reveal that the sandstones were derived from a recycled orogen. With increasing transport distance, sediment maturity increased correspondingly. The Oligocene to Lower Miocene sandstones in the Baiyun Sag have low compositional maturity and have experienced low to moderate weathering. The sediments of the Zhuhai Formation have experienced relatively strong weathering intensity compared with those of the Enping and lower Zhujiang formations. Due to low degree of illitization and differences in the geochemical compositions of the sediments, the continental island arc data from different boreholes in the Baiyun Sag are more irregularly distributed in the A-CN-K plot. The modal composition (e.g., quartz, feldspar, and lithic fragments) and geochemical indices (Al 2 O 3 /TiO 2 ratio; Al 2 O 3 -TiO 2 diagram; discriminant F1-F2 diagram; Eu/Eu*, La/Sc, La/Co, Th/Sc, and Th/Co ratios; Hf-La/Th and La/Sc-Co/Th diagrams; and rare earth element patterns) indicate that the sediments in the Baiyun Sag are mainly derived from felsic source rocks. Although the uplift around the Baiyun Sag includes multistage magmatism and basic rocks, it has little influence on the sediment in the depression, and no sediments were transported by the Han River to the Baiyun Sag. Geochemical data and detrital zircon U-Pb ages suggest that the Pearl River was formed in the Early Oligocene and became the main source for the sediments in this area. The river carried felsic material from the South China Coast forming a large delta on the northern slope of the Baiyun Sag. The ratios of Eu/Eu*, La/Sc, La/ Co, Th/Sc and Th/Co, and heavy mineral data indicate that the sediments transported by the Pearl River to the Baiyun Sag were changed from the arc-dominated coastal zone to the interior of the South China Block during the Late Oligocene to Early Miocene and even reached the south-eastern margin of the Tibetan Plateau (West Yunnan Plateau). The La-Th-Sc and Th-Sc-Zr/10 diagrams suggest that the provenance of these sandstones is evolved continental island arc or an active continental margin setting.

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Facies analysis and distribution of Late Palaeogene deep‐water massive sandstones in submarine‐fan lobes, NW Borneo

et al. 2022

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Deep-water massive sandstones (DWMS) are characterized by large volumes of sand accumulations which are considered as potential reservoir intervals in deep-marine environments. Lithological variations and bed thickness statistics are used to interpret the distribution of massive sandstones in a deep-marine fan-lobe system. These massive sandstones are interpreted based on lithological heterogeneities and detailed facies analysis in seventeen exposed sections of the Late Palaeogene deposits in Sabah, NW Borneo. Sedimentary logs containing details of lithology textures and structures were used to recognize nine sedimentary facies of DWMS. These lithofacies were then grouped into three sedimentary facies associations: (1) massive facies association with basal part of turbiditic Bouma sequence, (2) massive facies association having softsediment deformation structures, and (3) massive facies association with erosional features. The facies analysis portrays inner to middle submarine fan deposition and was later applied to reconstruct the distribution of a channel-lobe complex. Individual sandstone bed thicknesses vary from 1 m to more than 8 m and the number of massive sandstones in submarine lobes range from less than 10% to more than 50%. The thicknesses of massive sandstones in channels are more than 8 m, whereas distal lobes have thicknesses from 1-2 m only. These sandstones are concentrated in channels, proximal and medial lobe settings that can also be verified from calculating the average of all maximum thickness of massive sand intervals that is, 8.91 m. The lithological heterogeneities and the processes associated with the deposition of these massive sandstones are vital for potential hydrocarbon reservoirs in the deep-marine environments around the globe.bed thickness statistics, channel-lobe complex, Crocker submarine fan, deep-water massive sandstones, facies analysis and facies association, NW Borneo, West Sabah Basin | INTRODUCTIONThe term 'deep-water massive sandstones' (DWMS) is used to describe the massive sandstones present in deep-marine environments (Johansson et al., 1998;Stevenson & Peakall, 2010;Stow & Johansson, 2000). The study of DWMS became the focus of emerging research over the last two decades and the concept is readily applicable to several deep-marine sandstone deposits across the globe including

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Seismic geomorphology and lithology of the early Miocene Pearl River Deepwater Fan System in the Pearl River Mouth Basin, northern South China Sea

Cited by 25 publications

References 65 publications

Genetic legacy of tertiary climatic change: a case study of two freshwater loaches, Schistura fasciolata and Pseudogastromyzon myersi, in Hong Kong

Genetic legacy of tertiary climatic change: a case study of two freshwater loaches, Schistura fasciolata and Pseudogastromyzon myersi, in Hong Kong

Petrography and geochemistry of Oligocene to Lower Miocene sandstones in the Baiyun Sag, Pearl River Mouth Basin, South China Sea: Provenance, source area weathering, and tectonic setting

Facies analysis and distribution of Late Palaeogene deep‐water massive sandstones in submarine‐fan lobes, NW Borneo

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