Eruptive tempo of Emeishan large igneous province, southwestern China and northern Vietnam: Relations to biotic crises and paleoclimate changes around the Guadalupian-Lopingian boundary

Huang, Hu; Huyskens, Magdalena H.; Yin, Qing‐Zhu; Cawood, Peter A.; Hou, Mingcai; Yang, Jianghai; Xiong, Fuhao; Du, Yu; Yang, Chenchen

doi:10.1130/g50183.1

Cited by 56 publications

(21 citation statements)

References 37 publications

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“…According to the ages of conodont biostratigraphy, Sun et al (2010) proposed that eruption of Eemishan LIP started from the J. altudaensis zone and peaked in the J. xuanhanensis zone. Recently, the new CATIMS U-Pb ages result accurately confirm that the onset time of Eemishan LIP was 260.55 ± 0.07 Ma (Huang et, al., 2022), and the peak time was 260 Ma (Zhong et al, 2014;Yang et al, 2018). The onset time of the δ 13 C carb negative drift in this study is consistent with that of the Emeishan volcanic eruption (Figure 8), indicating that Emeishan LIP is undoubtedly one of the important mechanisms driving the δ 13 C carb negative drift.…”

Section: The Negative Drifting Of δ 13 C Carb During the Glb Transitionmentioning

confidence: 74%

“…Conodont biostratigraphic correlations from the marginal inner zone to the outer zone of the Emeishan LIP, shows that initial eruption began in the J. altudaensis zone of the middle Capitanian (261-262 Ma), and dramatically increased in extent and volume in the J. xuanhanensis zone (260-261 Ma) (Sun et al, 2010;Shen et al, 2019). Increasingly reported high-precision U-Pb ages (Shen et al, 2011;Zhong et al, 2014Zhong et al, , 2020Li Y. et al, 2018;Huang et al, 2018;Shellnutt et al, 2020; GLB lithostratigraphic sedimentary sequence (Wang et al, 2020), spatial-temporal distribution of the Emeishan LIP (Shen et al, 2011;Zhong et al, 2014Zhong et al, , 2020Li D. D. et al, 2018;Huang et al, 2018Huang et al, , 2022Shellnutt et al, 2020), and GLB biostratigraphic correlation (Mei et al, 1994a;1994b;Mei, 1995;Lai et al, 2008). Chronostratigraphic scale is according to Shen et al (2022).…”

Section: Geological Settingmentioning

confidence: 99%

“…Accompanied by the violent eruption of the Emeishan LIP during the Late Guadalupian, which causing climatic fluctuations and ocean evolution (Chen et al, 2011;Zhang B. L. et al, 2021;Sun et al, 2022). Emeishan volcanism is also considered to be a potential kill mechanism of the end-Guadalupian biodiversity crisis (Wignall et al, 2009;Bond et al, 2010;Chen and Xu, 2019;Huang et al, 2022). Simultaneously, causal links between volcanic activity, biological crisis, climate change, and other geological events are still under discussion (Wignall et al, 2009;Bond et al, 2010;Cao et al, 2018;Chen and Xu, 2019;Zhang B. L. et al, 2021;Sun et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

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Late Guadalupian–early Lopingian marine geochemical records from the Upper Yangtze, South China: Implications for climate-biocrisis events

Sun²,

Xia³

et al. 2023

Front. Earth Sci.

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Major paleoenvironmental changes occurred during the Guadalupian-Lopingian boundary (GLB) transition, but the causative linkages among the Emeishan Large Igneous Province (LIP), end-Guadalupian crisis and climatic fluctuations are still in dispute. Variation of geochemical proxies preserved in the sedimentary records is important evidence in examining potential links between volcanisms and environmental changes. Herein, we carried out a comprehensive study of carbon/strontium isotope and trace element geochemistry at the Dukou section, northern margin of the Upper Yangtze. During the Late Guadalupian, the carbon isotope showed a negative drift, the marine primary productivity declined simultaneously, and redox proxies indicate the enhancement of ocean oxidation. It is worth noting that the δ13Ccarb turns into a rapid negative drift from a slow decline at approximately 260.55 Ma, which was almost synchronized with the latest reported eruption ages of Emeishan Large Igneous Province. This coincidence suggests that global volcanic-tectonic activity during the Late Guadalupian might have been the important factor in carbon-cycle perturbation. Subsequently, the δ13Ccarb presents a rapid positive shift at approximately 259.4 Ma, and climate transformed from interglacial to P4 glacial, indicating that the climate rapidly cooled before the Emeishan LIP completely ended, which may be due to carbon sinks caused by weathering of mafic rocks, and may also be associated with a significant reduction in global volcanic activity. Accompanied by sudden weathering attenuation, the 87Sr/86Sr ratios show a significant increase instead from the previous long-time low value, which only can be explained reasonably by the rapid decline in mantle-derived Sr flux associated with the weakening of volcanic activity and mafic weathering. Intergrated geochemical indices in this interval shows that there is a rapid climate perturbation associated with a significant δ13Ccarb negative shift at approximately 260.55 Ma ∼ 259.10 Ma, which may be related to the eruption surge of the Emeishan LIP, active volcanic arcs, and triggered the end-Guadalupian biocrisis.

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Section: The Negative Drifting Of δ 13 C Carb During the Glb Transitionmentioning

confidence: 74%

Section: Geological Settingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Late Guadalupian–early Lopingian marine geochemical records from the Upper Yangtze, South China: Implications for climate-biocrisis events

Sun²,

Xia³

et al. 2023

Front. Earth Sci.

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“…It mainly comprises voluminous continental flood basalt, ultramafic-mafic intrusive and extrusive rocks, rhyolite, and granitic rock (Xu et al, 2001(Xu et al, , 2010Xiao et al, 2004;Zhou et al, 2006;Liu et al, 2016;Huang et al, 2022a). The ELIP mainly erupted around the Permian Guadalupian-Lopingian boundary (~260-257 Ma) (Zhou et al, 2002;Shellnutt et al, 2012Shellnutt et al, , 2020Zhong et al, 2014Zhong et al, , 2020Huang et al, 2016Huang et al, , 2018Huang et al, , 2022b. The eruption of the ELIP covers an area of ~2.5 × 10 5 km 2 in the South China and northern Vietnam (Figure 1) (Chung and Jahn, 1995;Xu et al, 2001;Ali et al, 2010), and its volume is ~3.8 × 10 6 km 3 (He et al, 2007).…”

Section: Geological Settingmentioning

confidence: 99%

“…The southwestern margin of the South China Craton and Indochina Block have developed abundant magmatic rocks with ages of ~300-200 Ma (Figure 1), which are related to opening and closure of the Paleo-Tethyan or Panthalassa Ocean and ELIP (Zhou et al, 2002;Li et al, 2006;Jian et al, 2009;Zi et al, 2012;Zhong et al, 2014;Hu et al, 2017;Huang et al, 2022b). The subduction of the Panthalassa Ocean plate has been demonstrated beneath the eastern-southeastern margin of the South China Craton during the Paleozoic to Mesozoic (Isozaki et al, 2010;Hu et al, 2015a).…”

Section: Indication Of Subduction Polarity By Provenancementioning

confidence: 99%

Provenance of the Lower Triassic Clastic Rocks in the Southwestern Margin of the South China Craton and Its Implications for the Subduction Polarity of the Paleo-Tethyan Ocean

et al. 2022

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The southwestern margin of the South China Craton preserves a Late Permian to Early Triassic sedimentary succession, the provenance of which helps to constrain the magmatic history and tectonic evolution of the Paleo-Tethyan Orogen. In this study, we present new detrital zircon U-Pb age, trace element, Hf isotope and whole-rock geochemical composition analyses from the Lower Triassic Qingtianbao Formation, to distinguish the provenance of clastic rocks. The results show that the detrital zircons of the Qingtianbao Formation are characterized by an age spectrum of unimodal, with an age peak of ∼260 Ma, and have a geochemical affinity to within-plate sources. Most of these zircons have positive εHf(t) values (+1.6 to +5.9), similar to those of the Emeishan rhyolites. The whole-rock geochemistry of most clastic samples shows no Nb–Ta anomalies on primitive mantle-normalized elemental diagrams. These features imply a source related to the Emeishan volcanic rocks. Integration of the geologic and provenance records in the southwestern margin of the South China Craton, we suggest that the Paleo-Tethyan Ocean may undergo a unidirectional subduction westward beneath the Indochina Block during the Late Permian–Early Triassic.

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Hydrothermal silicification in Ediacaran Dengying Formation fourth member deep dolomite reservoir, Central Sichuan Basin, China: Implications for reservoir quality

Wang

Jiang

Yang³

et al. 2023

Geological Journal

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The Ediacaran Dengying Formation fourth member in Central Sichuan Basin is the deep dolomite gas reservoir with the largest natural gas reserves in China, providing an excellent example for understanding the effect of hydrothermal silicification on deep dolomite reservoir quality. By integrating petrology, geochemistry and physical property measurement, this study aims to reveal the genesis of different quartz phase and their corresponding diagenetic events, and to discuss the temporal relationship of diagenetic events and their effects on the quality of deep dolomite reservoir in Dengying fourth member. Three phases of quartz cement are identified in Ediacaran Dengying Formation deep dolomite reservoirs of Central Sichuan Basin as follows: (1) first‐stage quartz filled in primary reservoir spaces, (2) second‐stage quartz mainly filled in secondary reservoir spaces, and (3) third‐stage quartz filled in secondary reservoir spaces with Mississippi Valley‐Type minerals. By analysing petrographic and temporal relationships between these fabrics, it is suggested that the first‐stage quartz precipitated during the syndiagenetic stage, the second‐stage quartz precipitated during middle diagenetic stage, and the third‐stage quartz precipitated during middle diagenetic stage as well. Silicification during syndiagenetic stage is characterized by replacement of cryptocrystalline quartz and cementation of first‐stage quartz within matrix dolomite (MD). After syndiagenetic silicification, the mineral composition of the MD changed from magnesium calcium carbonate to silica, and the later constructive diagenetic alterations were almost ineffective. The distribution of syndiagenetic silicification during syndiagenetic stage gradually decreases from the platform‐interior to the platform‐margin. The second‐stage and third‐stage quartz cements, derived from two‐stage hydrothermal silicification in the middle stage, are both destructive for reservoir preservation. This study, combined with coeval vapour–liquid inclusions Th data and thermal‐burial models, constrains the time of the second‐stage quartz to ca. 403–408 Ma, suggesting an hydrothermal silicification related to the Caledonian movement. The time of the third‐stage quartz cement is constrained to ca. 259.4 Ma, associated with Late Permian eruption of Emeishan flood basalts.

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Eruptive tempo of Emeishan large igneous province, southwestern China and northern Vietnam: Relations to biotic crises and paleoclimate changes around the Guadalupian-Lopingian boundary

Cited by 56 publications

References 37 publications

Late Guadalupian–early Lopingian marine geochemical records from the Upper Yangtze, South China: Implications for climate-biocrisis events

Late Guadalupian–early Lopingian marine geochemical records from the Upper Yangtze, South China: Implications for climate-biocrisis events

Provenance of the Lower Triassic Clastic Rocks in the Southwestern Margin of the South China Craton and Its Implications for the Subduction Polarity of the Paleo-Tethyan Ocean

Hydrothermal silicification in Ediacaran Dengying Formation fourth member deep dolomite reservoir, Central Sichuan Basin, China: Implications for reservoir quality

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