Provenance of Lower Jurassic sediments in the South China continental margin: Evidence from U-Pb ages of detrital zircons

Kong, Juanjuan; Xu, Zhongjie; Cheng, Rihui; Li, Zhiwei

doi:10.1016/j.palaeo.2021.110341

Cited by 10 publications

(3 citation statements)

References 75 publications

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“…Age populations of 1000-900, 480-400 and 280-210 Ma have no specific significance for source tracing. The 1000-900, 480-400 and 280-210 Ma magmatism is widely distributed in the Nanling Belt and Wuyi and Yunkai domains (Sun et al 2005;Li et al , 2010Chen et al 2008;Kong et al 2021a). For example, in Yunkai Domain, there are 950-900 Ma Tiantangshan granite and daciteporphyry (Zhang et al 1998;Qin et al 2006) rhyolite (Liu et al 2001;Shu et al 2008), and 460-400 Ma Zhuguangshan and Penggongmiao granites in the Nanling Belt (Xu & Xu, 2015;Zhu et al 2016).…”

Section: A Provenance Of Upper Triassic and Lower Jurassic Samplesmentioning

confidence: 99%

“…We therefore set a discordance Late Triassic -Early Jurassic tectonic setting, South China Block filter (10%) to exclude these zircons (Gehrels, 2014). Zircon fertility can also cause bias in detrital zircon U-Pb dating distribution (Moecher & Samson, 2006;Dickinson, 2008;Kong et al 2021a), and we needed to minimize its impact on provenance analysis. Dickinson (2008) proposed that measured zirconium content can be used as a proxy for the zircon content of granitoid rocks, which can help us to assess the propensity of yielding zircons from granitic rocks.…”

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confidence: 99%

“…Dickinson (2008) proposed that measured zirconium content can be used as a proxy for the zircon content of granitoid rocks, which can help us to assess the propensity of yielding zircons from granitic rocks. Kong et al (2021a) divided granitic rocks in the SCB into three groups based on zirconium content. Granitic rocks: of age 200-145 and 900-700 Ma and mean zirconium content 139 ppm are assigned a zircon fertility factor of 1.0; of age 280-210 and 490-390 Ma and mean zirconium content 182 ppm are assigned a zircon fertility factor of 1.4; and of age 2000-1700 and 2900-2500 and mean zirconium content 331 ppm are assigned a zircon fertility factor of 2.5.…”

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confidence: 99%

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U–Pb geochronology of Upper Triassic – Lower Jurassic detrital sequences from SE margin of the South China Block: implications for Palaeo-Pacific subduction and tectonic evolution

Kong

Tao

et al. 2022

Geol. Mag.

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We performed U–Pb dating of detrital zircons and conducted petrological and whole-rock geochemical analyses to assess the provenance of the Upper Triassic – Lower Jurassic clastic rocks in the southeastern margin of the South China Block. Detrital zircon U–Pb ages are mainly classified into age groups of 2000–1700, 900–700, 490–390 and 280–210 Ma, consistent with derivation from the Jiangnan orogenic belt, Nanling Belt, as well as Wuyi and Yunkai domains. Lower Jurassic samples yield a special main age population of 200–190 Ma, and these detrital zircon grains have low Th/U and Nb/Hf ratios and high Th/Nb and Hf/Th ratios, showing they are derived from a continental magmatic arc. However, the cross-correlation and likeness coefficients of kernel density estimates of Upper Triassic and Lower Jurassic sandstones are 0.8608 and 0.8403, indicating that their populations are highly similar. Since the tectonic setting is the key factor in controlling the relationship between source and sink, the stable supply of identical provenance suggests that the tectonic setting did not significantly change during Late Triassic – Early Jurassic time. Sandstone petrography, regional facies distribution and the detrital zircon age patterns all reflect a consistent tectonic setting for the South China Block during Late Triassic – Early Jurassic time. The Palaeo-Pacific subduction therefore did not control the tectonic evolution of the South China Block until after the Early Jurassic Epoch.

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Section: A Provenance Of Upper Triassic and Lower Jurassic Samplesmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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U–Pb geochronology of Upper Triassic – Lower Jurassic detrital sequences from SE margin of the South China Block: implications for Palaeo-Pacific subduction and tectonic evolution

Kong

Tao

et al. 2022

Geol. Mag.

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A database of detrital zircon geochronology ages of Cambrian to Paleogene deposits in South China

Xia,

Li,

et al. 2023

Geoscience Data Journal

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Complications of detrital zircons databases provide a means for statistically analysing a variety of significant geological problems. In this work, we tried to collect a database about the South China Phanerozoic detrital zircon geochronology data. The data statistics of this paper rely on the OneSediment Working Group of The Deep‐time Digital Earth program (DDE). By November 2022, the database contains a total of 699 samples with 55,532 U–Pb ages and 3,770 effective Hf isotope data, from 130 papers. Abundant information including reference title, sample ID, locality, rock type, research institution, GPS coordinates, U–Pb ages, εHf(t) values, etc., have been involved in our database, and all data can be downloaded from DDE Data Publish & Repository website, https://repository.deep‐time.org/. Through the integrated data, we can improve the previous studies and avoid the waste of resources caused by a large number of repeated studies.

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Detrital zircon geochronology of middle Paleozoic to lower Mesozoic strata from Hainan: implications for sedimentary provenance and tectonic evolution of Hainan

Cheng

2022

Int J Earth Sci (Geol Rundsch)

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Provenance of Lower Jurassic sediments in the South China continental margin: Evidence from U-Pb ages of detrital zircons

Cited by 10 publications

References 75 publications

U–Pb geochronology of Upper Triassic – Lower Jurassic detrital sequences from SE margin of the South China Block: implications for Palaeo-Pacific subduction and tectonic evolution

U–Pb geochronology of Upper Triassic – Lower Jurassic detrital sequences from SE margin of the South China Block: implications for Palaeo-Pacific subduction and tectonic evolution

A database of detrital zircon geochronology ages of Cambrian to Paleogene deposits in South China

Detrital zircon geochronology of middle Paleozoic to lower Mesozoic strata from Hainan: implications for sedimentary provenance and tectonic evolution of Hainan

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