Evolution of oceanic redox conditions during the Permo-Triassic transition: Evidence from deepwater radiolarian facies

Feng, Qinglai; Algeo, Thomas J.

doi:10.1016/j.earscirev.2013.12.003

Cited by 93 publications

(46 citation statements)

References 130 publications

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“…Numerous studies have been conducted to characterize the biotic changes (Payne and Clapham, 2012;Chen and Benton, 2012;Crasquin and Forel, 2014;Chen et al, 2014aChen et al, , 2014b; and references therein) and environmental disturbances (Xie et al, 2007;Sun et al, 2012;Romano et al, 2012;Retallack, 2013;Cui et al, 2013;Benton and Newell, 2014;Cui and Kump, 2014;Feng and Algeo, 2014) associated with the end-Permian extinction event (EPE, Burgess et al, 2014) within marine successions. In recent years, emphasis has been directed to exposures located along the Yangtze Platform in South China, culminating in the definition of the Global Stratotype Section and Point (GSSP) for the Permian-Triassic boundary (PTB) at the Meishan section (Zhejiang province, west of Shanghai, Yin et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Terrestrial paleoenvironment characterization across the Permian–Triassic boundary in South China

Bercovici

Cui

Forel

et al. 2015

Journal of Asian Earth Sciences

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a b s t r a c tWell-preserved marine fossils in carbonate rocks permit detailed studies of the end-Permian extinction event in the marine realm. However, the rarity of fossils in terrestrial depositional environments makes it more challenging to attain a satisfactory degree of resolution to describe the biotic turnover on land. Here we present new sedimentological, paleontological and geochemical (X-ray fluorescence) analysis from the study of four terrestrial sections (Chahe, Zhejue, Mide and Jiucaichong) in Western Guizhou and Eastern Yunnan (Yangtze Platform, South China) to evaluate paleoenvironmental changes through the Permian-Triassic transition.Our results show major differences in the depositional environments between the Permian Xuanwei and the Triassic Kayitou formations with a change from fluvial-lacustrine to coastal marine settings. This change is associated with a drastic modification of the preservation mode of the fossil plants, from large compressions to small comminuted debris. Plant fossils spanning the Permian-Triassic boundary show the existence of two distinct assemblages: In the Xuanwei Formation, a Late Permian (Changhsingian) assemblage with characteristic Cathaysian wetland plants (mainly Gigantopteris dictyophylloides, Gigantonoclea guizhouensis, G. nicotianaefolia, G. plumosa, G. hallei, Lobatannularia heinanensis, L. cathaysiana, L. multifolia, Annularia pingloensis, A. shirakii, Paracalamites stenocostatus, Cordaites sp.) is identified. In the lowermost Kayitou Formation, an Early Triassic (Induan) Annalepis-Peltaspermum assemblage is shown, associated with very rare, relictual gigantopterids. Palynological samples are poor, and low yield samples show assemblages almost exclusively represented by spores. A 1 m thick zone enriched in putative fungal spores was identified near the top of the Xuanwei Formation, including diverse multicellular forms, such as Reduviasporonites sp. This interval likely corresponds to the PTB ''fungal spike'' conventionally associated with land denudation and ecosystem collapse. While the floral turnover is evident, further studies based on plant diversity would be required in order to assess contribution linked to the end-Permian mass extinction versus local paleoenvironmental changes associated with the transition between the Xuanwei and Kayitou formations.

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Section: Introductionmentioning

confidence: 99%

Terrestrial paleoenvironment characterization across the Permian–Triassic boundary in South China

Bercovici

Cui

Forel

et al. 2015

Journal of Asian Earth Sciences

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“…At Nhi Tao in northern Vietnam, framboidal pyrite layers appear exactly at the level of the EPME horizon and continue several meters upsection, suggesting a series of brief but possibly intense incursions of H 2 S onto this shallow carbonate platform (Algeo et al, 2007(Algeo et al, , 2008. Such short-term incursions of sulfidic waters into the ocean surface layer would have been possible if a long-term reservoir of H 2 S-rich waters existed at intermediate water depths (Feng and Algeo, 2014;this study). The absence of biomarker evidence for PZE in the shallow-water sections of the present study may reflect the briefness of such sulfidic incursions into the ocean-surface layer, after which H 2 S would have been rapidly oxidized to sulfate and may not have persisted long enough to have allowed an obligate anaerobic community to become established.…”

Section: Role Of Hydrogen Sulfide In the Marine Mass Extinctionmentioning

confidence: 91%

“…Although early claims of whole-ocean anoxia (e.g., Wignall and Twitchett, 1996;Isozaki, 1997) have been disproven (e.g., Algeo et al, 2011a), more recent studies have shown that the Permian-Triassic boundary (PTB) interval was widely associated with a shift toward more reducing marine environmental conditions (Grice et al, 2005a;Kump et al, 2005;Kaiho et al, 2006;Hays et al, 2007;Riccardi et al, 2007;Gorjan et al, 2007;Algeo et al, 2007Algeo et al, , 2008Takahashi et al, 2014). However, spatial patterns of marine redox variation (i.e., related to proximality and water depths) have been addressed to only a limited degree in a few studies (e.g., Feng and Algeo, 2014).…”

Section: Introductionmentioning

confidence: 96%

Expansion of photic-zone euxinia during the Permian–Triassic biotic crisis and its causes: Microbial biomarker records

Zhou

Algeo

Ruan

et al. 2017

Palaeogeography, Palaeoclimatology, Palaeoecology

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The incursion of euxinic waters into the ocean-surface layer is hypothesized to have been an important killing agent during the end-Permian mass extinction. However, both the causes and extent of oceanic euxinia during this crisis remain poorly known, making assessment of its role in the mass extinction difficult. Here, we document the distribution of aryl isoprenoids (AIs), which are biomarkers of obligate anaerobic green sulfur bacteria (Chlorobiaceae) that are indicative of photic-zone euxinia, in 12 Permian-Triassic Boundary (PTB) sections with a wide distribution globally. Profiles of AI abundance for the 12 study sections show significant spatiotemporal variation. No AIs were identified in the shallowest sections, but AIs are present both prior to and following the mass extinction in intermediate-depth sections and following the mass extinction in deep-water sections. This pattern suggests a combination of upward and oceanward expansion of photic-zone euxinia during the PTB crisis, possibly fueled by elevated riverine nutrient fluxes as a consequence of climatic warming, terrestrial ecosystem destruction, and enhanced erosion. This hypothesis is supported by the close association of AIs with elevated abundances of moretanes and dibenzofuran (DBF), which are biomarkers for terrestrial erosion. Expansion of oceanic euxinia at intermediate water depths may have established a long-term reservoir that fed episodic incursions of H 2 S-bearing waters into shallow-marine environments, delaying the recovery of marine ecosystems during the Early Triassic. The biomarker records of the present study thus provide significant evidence of terrestrial-marine linkage during the PTB crisis.

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“…Late Permian–Early Triassic succession of the study area in the Western Hubei Trough. Biozonations are from Feng and Algeo (), Niu et al (), Zhang et al (), and the geological survey reports for the study area [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Geological Settingmentioning

confidence: 99%

“…Ages of eclogites are from Ames et al (), Ames et al (), Cheng et al (), Gao et al (), Liu et al (), Liu et al (), Liu et al (), Liu et al (), Liu and Liou (), Ratschbacher et al (), Sun, Williams, and Li (), Wan et al (), and Yang et al (). (c) Palaeogeography of South China during the Changhsingian (modified from Feng et al, , Feng & Algeo, ) [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Introductionmentioning

confidence: 99%

Sedimentary record of the collision of theNorth and South China cratons: New insights from theWestern Hubei Trough

et al. 2018

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Collision of the South and North China cratons was an important event in eastern Asia and contributed to the formation of the Central Orogenic Belt in China. While the timing of collision has been documented to the west (at the West Qinling Belt) and east (at the Dabie Mountains), little is known regarding the timing of collision in the middle sector of the collision zone. We present field, sedimentological, mineralogical, and geochemical data from the Late Permian Dalong Formation and Early Triassic Daye Formation (lower part) in the Western Hubei Trough which is located in the northern South China Craton. Based on sedimentary facies, SEM, and XRD data, we suggest that the Dalong Formation, which is mainly composed of chert and carbonaceous mudstone, was deposited in a deep shelf, and the lower part of the Daye Formation, which is mainly composed of mudstone and carbonate rocks, was deposited in a shallow shelf. Geochemical data imply that the source of the mudstone in these formations was the Qinling active continental margin of the North China Craton. These data support a scenario that the South and North China cratons may have collided by the end of the Late Wuchiapingian of Late Permian time at the southern margin of the East Qinling Belt. The collision event may have led to the formation of the Western Hubei Trough.

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Evolution of oceanic redox conditions during the Permo-Triassic transition: Evidence from deepwater radiolarian facies

Cited by 93 publications

References 130 publications

Terrestrial paleoenvironment characterization across the Permian–Triassic boundary in South China

Terrestrial paleoenvironment characterization across the Permian–Triassic boundary in South China

Expansion of photic-zone euxinia during the Permian–Triassic biotic crisis and its causes: Microbial biomarker records

Sedimentary record of the collision of theNorth and South China cratons: New insights from theWestern Hubei Trough

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