Trace and rare-earth element characteristics of fine-grained sediments in the Upper Triassic Xujiahe Formation in the western Sichuan Basin, SW China: implications for the provenance and depositional environment

Yu, Yu; Lin, Liangbiao; Nan, Hongli

doi:10.1007/s13146-020-00670-w

Cited by 4 publications

(2 citation statements)

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“…δCe = Ce/Ce*=Cen/(Prn 2 /Ndn) (Lawrence et al, 2006); δEu = Eu/Eu*=Eun/(Smn×Gdn) 0.5 (Tostevin et al ., 2016); δGd = Gd/Gd*=[Gd/(0.33Sm + 0.67Tb)]n (Tobia, 2018); Ce anom =lg[3Cen/(2Lan + Ndn)] (Elder eld and Greaves, 1982); δCe = Ce/Ce*=Cen/(Prn 2 /Ndn) (Lawrence et al, 2006); δEu = Eu/Eu*=Eun/(Smn×Gdn) 0.5 (Tostevin et al ., 2016); δGd = Gd/Gd*=[Gd/(0.33Sm + 0.67Tb)]n (Tobia, 2018); Ce anom =lg[3Cen/(2Lan + Ndn)] (Elder eld and Greaves, 1982);The contents of trace elements in seawater vary according to the input of terrigenous detritus, distance from shore, depth, climate and redox conditions(Baker and Bruns, 1985;Babu et al, 2002;Challands et al, 2009;Fu et al, 2016;Yu et al, 2021). Therefore, to a large extent, trace elements in sedimentary rocks can be used to understand the reversal of changes in the sedimentary environment in geological history.…”

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“…. The content of some trace elements and REE varies greatly under different redox conditions, such as Ni, Co, V, Th, U, Cr, Mo, and Ce (Elder eld and Greaves, 1982;Yuri et al, 2008;Zhang et al, 2017;Yu et al, 2021).However, trace elements are prone to be affected by late diagenesis, leading to inaccurate redox measurements, while rare earth elements are less affected by diagenesis(Bau, 1991;Liu et al, 2018). Therefore, this paper determines redox conditions according to Ceanom and δCe.…”

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Geochemistry of the Guadalupian—Lopingian carbonate rocks from the NE Sichuan Basin, China: implications for paleo-oceanic environment and provenance

Yao,

Mou,

Zhou

et al. 2024

Carbonates Evaporites

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The Dongwu Movement (including the eruption of the Emeishan Large Igneous Province (ELIP) ) , as the last part of the Hercynian cycle in the Yangtze region is an essential event between the Guadalupian and Lopingian, which has signi cant implications for the Paleo-oceanic environment and Paleoclimate of the area. To study the changes in the sedimentary environment in the Guadalupian and Lopingian, the Zhenba section was selected to analyze trace elements and rare earth elements. Trace elements and rare earth elements indicate that in the Guadalupian, the limestone samples had prominent typical shallow-water seawater deposition characteristics and were less affected by terrigenous detritus, which was an arid oxidation environment (Sr/Cu ranges from 4 to 1381; Rb/Sr value is low; δCe<1, Ce anom <-0.1; Er/Nd ranges from 0.1 to 0.27; Y/Ho ranges from 44 to 72), while in the Lopingian, the limestone samples were more affected by terrigenous detritus, which was a humid climate with the weak oxidation-reduction environment (Sr/Cu ranges from 1 to 656; Rb/Sr value is high; δCe tends to 1, Ce anom greater than and close to -0.1; Er/Nd<0.1; Y/Ho ranges from 26 to 44). The geochemical diagrams of TiO 2 -Al 2 O 3 , Al 2 O 3 -REE, La-Th-Sc, Th-Co-Zr/10, Th-Sc-Zr/10 and 87 Sr/ 86 Sr of the sample indicate that the terrigenous detrites of the sample should mainly come from the South Qinling active continental margin, rather than the weathering of Emeishan basalt. Acid bentonite should come from the Paleo-Tethys island arc or the island arc formed by the subduction of the South China Plate to the North China Plate, rather than ELIP. These evidences support the view that the North China Plate may have collided with the South China Plate in the middle to late Wujiaping.

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Geochemistry of the Guadalupian—Lopingian carbonate rocks from the NE Sichuan Basin, China: implications for paleo-oceanic environment and provenance

Yao,

Mou,

Zhou

et al. 2024

Carbonates Evaporites

View full text Add to dashboard Cite

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Combined U-Pb ages and Lu-Hf systematics of detrital zircons from Early Cambrian Gondwanan siliciclastic rocks in S Turkey: Provenance and correlations with coeval successions in peri-Gondwanan terranes

et al. 2022

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Geochemistry of the Guadalupian - Lopingian Carbonate Rocks from the NE Sichuan Basin, China: Implications for Paleo-oceanic Environment and Provenance

Yao,

Mou,

Zhou

et al. 2023

Preprint

View full text Add to dashboard Cite

The Dongwu Movement (including the eruption of the Emeishan Large Igneous Province (ELIP) ) , as the last part of the Hercynian cycle in the Yangtze region is an essential event between the Guadalupian and Lopingian, which has significant implications for the Paleo-oceanic environment and Paleoclimate of the area. To study the changes in the sedimentary environment in the Guadalupian and Lopingian, the Zhenba section was selected to analyze trace elements and rare earth elements. Trace elements and rare earth elements indicate that in the Guadalupian, the limestone samples had prominent typical shallow-water seawater deposition characteristics and were less affected by terrigenous detritus, which was an arid oxidation environment (Sr/Cu ranges from 4 to 1381; Rb/Sr value is low; δCe<1, Ceanom<-0.1; Er/Nd ranges from 0.1 to 0.27; Y/Ho ranges from 44 to 72), while in the Lopingian, the limestone samples were more affected by terrigenous detritus, which was a humid climate with the weak oxidation-reduction environment (Sr/Cu ranges from 1 to 656; Rb/Sr value is high; δCe tends to 1, Ceanom greater than and close to -0.1; Er/Nd<0.1; Y/Ho ranges from 26 to 44). The geochemical diagrams of TiO2-Al2O3, Al2O3-REE, La-Th-Sc, Th-Co-Zr/10, Th-Sc-Zr/10 and 87Sr/ 86Sr of the sample indicate that the terrigenous detrites of the sample should mainly come from the South Qinling active continental margin, rather than the weathering of Emeishan basalt. Acid bentonite should come from the Paleo-Tethys island arc or the island arc formed by the subduction of the South China Plate to the North China Plate, rather than ELIP. These evidences support the view that the North China Plate may have collided with the South China Plate in the middle to late Wujiaping.

show abstract

Trace and rare-earth element characteristics of fine-grained sediments in the Upper Triassic Xujiahe Formation in the western Sichuan Basin, SW China: implications for the provenance and depositional environment

Cited by 4 publications

References 50 publications

Geochemistry of the Guadalupian—Lopingian carbonate rocks from the NE Sichuan Basin, China: implications for paleo-oceanic environment and provenance

Geochemistry of the Guadalupian—Lopingian carbonate rocks from the NE Sichuan Basin, China: implications for paleo-oceanic environment and provenance

Combined U-Pb ages and Lu-Hf systematics of detrital zircons from Early Cambrian Gondwanan siliciclastic rocks in S Turkey: Provenance and correlations with coeval successions in peri-Gondwanan terranes

Geochemistry of the Guadalupian - Lopingian Carbonate Rocks from the NE Sichuan Basin, China: Implications for Paleo-oceanic Environment and Provenance

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