Latest Permian deep-water foraminifers from Daxiakou, Hubei, South China

Zhang, Muhui; Gu, Sen

doi:10.1017/jpa.2015.19

Cited by 4 publications

(3 citation statements)

References 62 publications

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“…With increasing water depth, the percentage of these taxa falls, whilst the small lagenids become dominant. This pattern is also reported from other regions such 26 / 91 as Iran, as well as other sections in South China (Insalaco et al, 2006;Gu et al, 2007;Vachard et al, 2010;Zhang and Gu, 2015). The lagenids are dominated by those with a small elongate test, such as Nodosinelloides, comprising 20% of the fauna, followed by Frondina and Geinitzina.…”

Section: Slope Settingssupporting

confidence: 78%

“…There has been a long history of systematic studies on Permian-Triassic foraminifera from many regions, including the Alps (Vachard and Miconnet, 1989;Groves et al, 2007;Nestell et al, 2011;Kolar-Jurkovšek et al, 2013), Caucasia (Pronina, 1988;Vuks, 2000;Pronina-Nestell and Nestell, 2001;Vuks, 2007), Iran (Kobayashi and Ishii, 2003;Aghai et al, 2009;Kolodka et al, 2012;Nejad et al, 2015), Japan (Kobayashi, 1997;Kobayashi, 2006;Kobayashi, 2012;Kobayashi, 2013), Tibet (Wang and Ueno, 2009;Wang et al, 2010;Zhang et al, 2013;Zhang et al, 2016), Turkey (Altiner, 1981;Altiner et al, 2000;Altiner and Altiner, 2010;Vachard and Moix, 2013), and South China (Gaillot et al, 2009;Song et al, 2009a;Song et al, 2011b;Song et al, 2015). Earlier investigations have revealed that foraminiferal faunas from shallow to deep settings were inconsistent in their response to the PTME (Gu et al, 2007;Song et al, 2009b;Zhang and Gu, 2015), thus it is necessary to investigate their spatial evolution.…”

Section: / 91mentioning

confidence: 99%

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Migration controls extinction and survival patterns of foraminifers during the Permian-Triassic crisis in South China

Liu

Song

Bond

et al. 2020

Earth-Science Reviews

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The Permian-Triassic mass extinction, the greatest biotic crisis in Earth history, triggered the complete replacement of ecosystems with the 5-10% surviving species giving rise to the Mesozoic fauna. Despite a long history of systematic studies on Permian-Triassic foraminifera, there have been few investigations into spatial and temporal patterns of survivorship and evolution during this critical interval. We interrogate a highresolution data set comprising newly obtained and previously published foraminiferal data (including 13,422 specimens in 173 species in 62 genera) from seven well-studied Permian-Triassic successions that record a transect of platform to basin facies in South China. Shallow-water settings seen at the Cili and Dajiang sections suffered a single-pulse, sudden extinction with high extinction rates at the end of the Palaeofusulina sinensis Zone; deeper-water and slope environments seen at Liangfengya and Meishan experienced a twopulse extinction in the Clarkina yini and Isarcicella staeschei zones; basinal settings, seen at Shangsi, Gujiao 2 / 91 and Sidazhai, record a single, less devastating extinction pulse in and slightly above the C. yini Zone. In the Late Permian, foraminiferal diversity was greatest on the shallow platforms, where 76.4% of species recorded in our study lived. The two pulses of the Permian-Triassic extinction prompted this foraminiferal diversity hotspot to move to deeper slope settings (comprising 75.6% of contemporary species) and finally basinal settings (comprising 88.8% of species). We propose that foraminifera migrated to deeper water to avoid overheating and toxicity in shallow waters that were driven by the emplacement of the Siberian Traps and coeval volcanic activities around the Paleotethys Ocean. This study provides a methodological framework for investigating survival mechanisms for foraminifers and other taxonomic groups during mass extinction events.

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Section: Slope Settingssupporting

confidence: 78%

Section: / 91mentioning

confidence: 99%

Migration controls extinction and survival patterns of foraminifers during the Permian-Triassic crisis in South China

Liu

Song

Bond

et al. 2020

Earth-Science Reviews

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“…On the other hand, among different paleogeographic settings, sharply different patterns of the same faunas had also been observed, typified by foraminiferal extinction (Song et al, 2009;Zhang and Gu, 2015;Li et al, 2021). The stratigraphic succession from the end-Permian to Early Triassic interval in the Chongyang section was very clear at the outcrop.…”

Section: Single Abrupt Extinction Pulse In the Platform Settingmentioning

confidence: 99%

Biotic Response to Rapid Environmental Changes During the Permian–Triassic Mass Extinction

Wang²,

Li³

et al. 2022

Front. Mar. Sci.

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The divergent patterns of Permian–Triassic mass extinction (PTME) have been extensively documented in varying water depth settings. We here investigated fossil assemblages and sedimentary microfacies on high-resolution samples from two adjacent sections of the South China Block: Chongyang from shallow-water platform and Chibi from deeper-water slop. At Chongyang, abundant benthos (over 80%), including rugose corals, fusulinids, calcareous algae, and large foraminifers, disappeared precipitously at the topmost of Changxing Formation grainstone, which suggested complete damage of the benthic ecosystem, confirming a sudden single-pulse extinction pattern. The end-Permian regression, marked by a karst surface, provided a plausible explanation for this extinction pattern. Whereas for the fauna in Chibi, the benthos was relatively abundant (20%–55%) with more trace fossils and lacking calcareous algae. Benthic abundance in Chibi reduced by two steps at the two claystone beds (Beds 10 and 18): bioclastic content dropped from an average of 50% in Beds 1–9 to 10% in Beds 11–17 and then to less than 5% in Beds 19–23, suggesting a two-pulse extinction. At the first pulse, large foraminifers were prominent victims in both shallow- and deeper-water settings. A plausible survival strategy for small-sized foraminifers was to migrate to deeper water to avoid extreme heat in shallow water. The early Triassic transgression prompted some small foraminifers to migrate back to original platforms and flourish briefly as disaster forms. At the Early Triassic mudstone with bottom-water settings in Chibi, the appearance of abundant small pyrite framboids (diameters of 4.74–5.96 μm), an indicator of intensified oxygen deficiency, was simultaneous with the two-step reduction of benthic diversity and abundance. Thus, anoxic conditions might be the main cause of the PTME at deeper-water settings. Our study is an example of the wider debate about biotic response to rapid environmental change for both the Permian–Triassic transition and modern days.

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Mercury anomalies across the end Permian mass extinction in South China from shallow and deep water depositional environments

Wang

Cawood

Zhao

et al. 2018

Earth and Planetary Science Letters

111

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Latest Permian deep-water foraminifers from Daxiakou, Hubei, South China

Cited by 4 publications

References 62 publications

Migration controls extinction and survival patterns of foraminifers during the Permian-Triassic crisis in South China

Migration controls extinction and survival patterns of foraminifers during the Permian-Triassic crisis in South China

Biotic Response to Rapid Environmental Changes During the Permian–Triassic Mass Extinction

Mercury anomalies across the end Permian mass extinction in South China from shallow and deep water depositional environments

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