Latest Permian–Early Triassic paleoclimatic reconstruction by sedimentary and isotopic analyses of paleosols from the Shichuanhe section in central North China Basin

Yu, Yingyue; Tian, Li; Chu, Daoliang; Song, Huyue; Guo, Wenwei; Tong, Jinnan

doi:10.1016/j.palaeo.2021.110726

Cited by 7 publications

(9 citation statements)

References 65 publications

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“…5 e). These results stand in stark contrast to the overwhelming evidence for aridification in the paleotropical latitudes during the Late Permian 28 , 38 – 40 , indicating that while the evidence for warming is consistent for terrestrial and marine strata, the effect on climate was likely related to zonal patterns in atmospheric/surface ocean circulation. The results of paleosol geochemistry for this study indicate that the early Middle Triassic paleosol from the Allan Hills formed under a humid and afforested biome, consistent with the production of clay and Fe-oxide minerals in the studied profile and lack of evidence of forested soil morphology in early Triassic paleosols in the Transantarctic Basin 11 , 47 .…”

Section: Discussioncontrasting

confidence: 68%

“…The dendrochronology data herein provides “snapshots” on a centennial timescale for the organismal response to paleoclimate at a given time interval. Broad comparisons between low-latitude and high-latitude climate are addressed through comparison of eastern Pangea successions of sedimentary rocks and paleosols 28 , 39 , 40 to the aforementioned strata.…”

Section: Discussionmentioning

confidence: 99%

“…Longer-term averages of paleoclimate information are derived from the morphologic and geochemical analysis of paleosols and sedimentary rocks (Figs. 4 g and 5 e) 18 , 19 , 28 , 39 , 40 . The late Permian witnessed an increase in land surface temperatures (LSTs) by 10 °C or more 19 , values consistent between eastern Australia and Antarctica.…”

Section: Discussionmentioning

confidence: 99%

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Paleoclimate-induced stress on polar forested ecosystems prior to the Permian–Triassic mass extinction

Gulbranson

Mellum

Corti

et al. 2022

Sci Rep

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The end-Permian extinction (EPE) has been considered to be contemporaneous on land and in the oceans. However, re-examined floristic records and new radiometric ages from Gondwana indicate a nuanced terrestrial ecosystem response to EPE global change. Paleosol geochemistry and climate simulations indicate paleoclimate change likely caused the demise of the widespread glossopterid ecosystems in Gondwana. Here, we evaluate the climate response of plants to the EPE via dendrochronology snapshots to produce annual-resolution records of tree-ring growth for a succession of late Permian and early Middle Triassic fossil forests from Antarctica. Paleosol geochemistry indicates a shift in paleoclimate towards more humid conditions in the Early and early Middle Triassic relative to the late Permian. Paleosol morphology, however, supports inferences of a lack of forested ecosystems in the Early Triassic. The plant responses to this paleoclimate change were accompanied by enhanced stress during the latest Permian as determined by high-resolution paleoclimate analysis of wood growth intervals. These results suggest that paleoclimate change during the late Permian exerted significant stress on high-latitude forests, consistent with the hypothesis that climate change was likely the primary driver of the extinction of the glossopterid ecosystems.

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Section: Discussioncontrasting

confidence: 68%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Paleoclimate-induced stress on polar forested ecosystems prior to the Permian–Triassic mass extinction

Gulbranson

Mellum

Corti

et al. 2022

Sci Rep

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“…The appearance of deep‐tier suspension feeders enhanced the circulation of water, strengthened the water flow of sediment–water interface, and deepened the redox discontinuity surface (Lu et al, 2020). Chemical compositions of the paleosols from the terrestrial sections are varied (Yu et al, 2022). This suggests that bioturbation increases the complexity of geochemical gradients in sediments by changing the rate of redox cycling through biomixing and bioirrigation (Feng et al, 2022).…”

Section: Discussionmentioning

confidence: 99%

The variations of terrestrial trace fossils and sedimentary substrates after the end‐Permian extinction in the Dengfeng area, North China

Zheng

Wan

et al. 2022

Geological Journal

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Evolution of terrestrial infauna in the Early Triassic enables to understand terrestrial biotic recovery after the end-Permian mass extinction (EPME). Six ichnospecies in two ichnogenera, including Skolithos linearis, S. verticalis, S. annulatus, S. isp., Planolites montanus, and P. beverleyensis, were recognized from the Lower Triassic Liujiagou Formation (Induan Stage) and Heshanggou Formation (Olenekian Stage) in the Baiping section of the Dengfeng area, North China. The ichno-ecological analyses of ichno-taxonomic abundance, ichnodiversity, bioturbation index, burrow size, and tiering level revealed that terrestrial infauna expanded from epibenthic to endobenthic through the Early Triassic. The tiering deepening suggested that tracemakers gradually began to excavate into the sediments instead of moving on the microbial mats, indicating that the burrowing capability of trace-making animals has recovered in the Olenekian. Four types of sedimentary substrates were summarized: non-bioturbated matground, matground with bioturbated patches, weakly bioturbated mixed ground, and moderately bioturbated mixed ground. Occurrence of the substrate of mixed ground may be a sign of the initial recovery of the terrestrial ecosystem after the EPME.

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“…The Liujiagou Formation contains multilayer conglomerate and thickly‐bedded siltstone in its lower part, great thickly‐bedded medium‐grained sandstone in its middle part, and thickly‐bedded medium‐grained sandstone with thinly‐bedded argillaceous siltstone in its upper part (Figures 2 and 3). Systematic U–Pb dating studies have not been undertaken in the study area, but previous biostratigraphic and magnetostratigraphic studies suggest that the Sunjiagou Formation was formed in the Late Permian and the Liujiagou Formation in the Early Triassic (Guo et al, 2022; Shen et al, 2022; Tu et al, 2016; Xing et al, 2021; Yu et al, 2022).…”

Section: Geological Settingmentioning

confidence: 99%

Geochemistry of the Permian–Triassic boundary strata in the southwest margin of the North China Craton: Provenance and tectonic implications

et al. 2022

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The Late Permian Sunjiagou Formation and Early Triassic Liujiagou Formation were studied to understand the palaeoclimatic and palaeoenvironmental changes in the southwest margin of the North China Craton across the Permian-Triassic boundary, as well as the tectonic evolution of their provenance sediment. Major, trace, and rare earth elements in 20 clastic rock samples from the strata above and below the boundary were analysed. Overall, the Sunjiagou Formation samples showed an average index of compositional variability (ICV) and chemical index of alteration (CIA) of 1.53 and 73.59, respectively, indicating high-maturity sediments in a warm and humid environment with moderate chemical weathering, whereas Liujiagou Formation samples had an average ICV and CIA of 2.40 and 70.1, respectively, indicating lowmaturity sediments in a cold and dry environment with mild chemical weathering.These strata were composed of first-cycle sediments in a tectonically active area.The provenance of the Sunjiagou Formation was dominated by quartz-rich sedimentary rocks, whereas that of Liujiagou Formation had both quartz-rich sedimentary rocks and intermediate volcanic rocks. The provenance tectonic settings were mainly the continental island arc and active continental margin. Thus, the study area was in a terrestrial, freshwater sedimentary environment from the Late Permian to Early Triassic, and the climate gradually changed from warm and humid to dry and hot, with multiple small-scale periodic evolutions. Taken together, these findings further confirm that the entire study area was in an oxidizing environment and the oxidation degree in the Early Triassic was higher than that in the Late Permian.

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Latest Permian–Early Triassic paleoclimatic reconstruction by sedimentary and isotopic analyses of paleosols from the Shichuanhe section in central North China Basin

Cited by 7 publications

References 65 publications

Paleoclimate-induced stress on polar forested ecosystems prior to the Permian–Triassic mass extinction

Paleoclimate-induced stress on polar forested ecosystems prior to the Permian–Triassic mass extinction

The variations of terrestrial trace fossils and sedimentary substrates after the end‐Permian extinction in the Dengfeng area, North China

Geochemistry of the Permian–Triassic boundary strata in the southwest margin of the North China Craton: Provenance and tectonic implications

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