There was no “Great Bank of Guizhou” in the Early Triassic in Guizhou Province South China

Feng, Ziqi; Bao, Zhidong; Zheng, Xiaodong; Yuan, Wang; Min, Liu

doi:10.3724/sp.j.1261.2015.00070

Cited by 20 publications

(27 citation statements)

References 2 publications

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“…-The seemingly erratic late Permian carbon isotope record in South China does not allow laterally reproducible intercalibration with the newly obtained U-Pb dates. This stands in sharp contrast with the Early Triassic carbon isotope record, which is of global significance (e.g., Galfetti et al, 2007), thus making the Early Triassic interval the ideal target of future studies that integrate chemostratigraphy, geochronology and astrochronology in a Bayesian age-depth modeling approach.…”

Section: Discussionmentioning

confidence: 95%

“…Among these is the Global Stratotype Section and Point (GSSP) in Meishan D (Yin et al, 2001), where the PTB is defined by the first occurrence (FO) of the Triassic conodont Hindeodus parvus. Additionally, these South Chinese sections reflect intense regional volcanic activity during late Permian and Early Triassic times as manifested by many intercalated zircon-bearing ash beds (Burgess et al, 2014;Galfetti et al, 2007;Lehrmann et al, 2015;Shen et al, 2011). High-precision U-Pb zircon geochronology can be applied to these ash beds by assuming that the age of zircon crystallization closely approximates the age of the volcanic eruption and ash deposition.…”

Section: Introductionmentioning

confidence: 99%

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Precise age for the Permian–Triassic boundary in South China from high-precision U-Pb geochronology and Bayesian age–depth modeling

et al. 2017

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Abstract. This study is based on zircon U-Pb ages of 12 volcanic ash layers and volcanogenic sandstones from two deep water sections with conformable and continuous formational Permian–Triassic boundaries (PTBs) in the Nanpanjiang Basin (South China). Our dates of single, thermally annealed and chemically abraded zircons bracket the PTB in Dongpan and Penglaitan and provide the basis for a first proof-of-concept study utilizing a Bayesian chronology model comparing the three sections of Dongpan, Penglaitan and the Global Stratotype Section and Point (GSSP) at Meishan. Our Bayesian modeling demonstrates that the formational boundaries in Dongpan (251.939 ± 0.030 Ma), Penglaitan (251.984 ± 0.031 Ma) and Meishan (251.956 ± 0.035 Ma) are synchronous within analytical uncertainty of ∼  40 ka. It also provides quantitative evidence that the ages of the paleontologically defined boundaries, based on conodont unitary association zones in Meishan and on macrofaunas in Dongpan, are identical and coincide with the age of the formational boundaries. The age model also confirms the extreme condensation around the PTB in Meishan, which distorts the projection of any stratigraphic points or intervals onto other more expanded sections by means of Bayesian age–depth models. Dongpan and Penglaitan possess significantly higher sediment accumulation rates and thus offer a greater potential for high-resolution studies of environmental proxies and correlations around the PTB than Meishan. This study highlights the power of high-resolution radio-isotopic ages that allow a robust intercalibration of patterns of biotic changes and fluctuating environmental proxies and will help recognizing their global, regional or local significance.

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Section: Discussionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Precise age for the Permian–Triassic boundary in South China from high-precision U-Pb geochronology and Bayesian age–depth modeling

et al. 2017

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“…There has been some discussion about the validity of basing palaeogeographic maps on modern geography, or whether they should also take account of plate tectonic reconstructions, or detailed consideration of interaction of 'terranes' in mobile orogenic belts (e.g. 'orogenic palaeogeography'; Feng et al 2012). Terranes ('geodynamic units' of Verard et al 2015) are assumed to have had separate palaeogeographic histories, and in some regions (e.g.…”

Section: Palaeogeographic Setting and Map Representationmentioning

confidence: 99%

“…There is no question that map representation is the primary tool for palaeogeography (e.g. Feng 2016;Feng et al 2012). However, complementary to a palaeogeographic map can be an analytical representation of certain palaeogeographic data sets, to expose particular data in a clearly testable way, and provide a guide to new empirical observations required to resolve data conflicts.…”

Section: Alternative Representations Of Palaeogeographic Datamentioning

confidence: 99%

Asia–Gondwana connections indicated by Devonian fishes from Australia: palaeogeographic considerations

Young

Lü

2020

J. Palaeogeogr.

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Middle Palaeozoic vertebrate fossil occurrences are summarised for Australia, with reference to faunal connections between Asia and East Gondwana, as first indicated by fish distributions of Lower Devonian fossil sites. Major endemic groups discussed are pituriaspid (Australian) and galeaspid (Asian) agnathans, wuttagoonaspids (Australian) and antarctaspid (Antarctic, Australian, Asian) arthrodires, yunnanolepid and sinolepid antiarchs (South China, Indochina terrane, Australia), and early tetrapodomorphs (South China, Australia). More widespread groups that lived in shallow marine environments (lungfishes, buchanosteid arthrodires, antiarch Bothriolepis) also show species groups shared between South China and East Gondwana. Exchange of continental facies fishes (e.g. tristichopterid tetrapodomorphs) may have been interrupted by marine transgression in the Frasnian, but were restored in the late Famennian with the appearance of Grenfellaspis in eastern Australia, the only sinolepid antiarch known from outside Asia. The hypothesis of Gondwana dispersion and Asian accretion, to explain the collage of geological terranes forming modern east and southeast Asia, implies increasing dissimilarity with increasing age, but the Siluro-Devonian early vertebrate evidence is inconsistent with this. Previous cladistic analysis of Asian terranes predicted galeaspid agnathans on the Indochina terrane, and their subsequent discovery at Ly Hoa, Vietnam, confirms that Indochina and South China had come together across the Song Ma suture by Middle Devonian time.

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“…Geologically, this section is located at the Huayingshan Anticline Belt of the southeastern Sichuan Basin in the eastern Upper Yangtze Region ( Fig 1B , modified from [ 33 ]). A large carbonate platform developed in the shallow sea of the Paleo-Tethys Ocean in the South China Block from the Late Permian to the Early Triassic ( Fig 1C [ 34 ] and Fig 1D [ 35 ]), and many marine outcrop sections containing the carbonate platform sequence have been studied in an effort to reveal PTB events. Lithofacies paleogeography of the Late Permian and Early Triassic in southern China was controlled mainly by plate movement [ 36 , 37 ].…”

Section: Geologic Settingmentioning

confidence: 99%

Early Triassic Griesbachian microbial mounds in the Upper Yangtze Region, southwest China: Implications for biotic recovery from the latest Permian mass extinction

Duan¹,

Shi²,

Chen³

et al. 2018

PLoS ONE

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Early Triassic microbialites are distributed widely in the shallow marine facies of the Tethys Region, especially in the carbonate platform where they were deposited immediately after the latest Permian mass extinction (LPME). Ten Griesbachian domed microbial mounds were found in an outcrop of the uppermost first member of the Feixianguan (FXG) Formation at Baimiaozi, which is located in Beibei in the Upper Yangtze Region of southwest China. Field investigations and thin-sections analyses indicated that oolitic limestone, bioclastic limestone, microbialite, marl, and mudstone deposits are present in the first and second members of the FXG Formation, among which the thickness of the microbial mound above the massive oolitic limestone at the carbonate platform was approximately 3–4 m. Three facies were identified at the microbial mounds, namely, a mound base, mound body, and mound cap. Irregular laminae were found in the brown-colored microbialite of the mound base. The main mound body, which is composed of gray microbialite, is 1.0–1.5 m high and 2.0–3.0 m in diameter at the base. Dark gray grainstone found in the mound cap is covered by a thin layer of shelly limestone containing intact fossils of bivalves and gastropods, which are indicative of a simple ecosystem consisting of microbes and primary consumers. Brown-colored mudstone and marl layers of the second member of the FXG Formation overlie the microbialite, and this indicates that growth of the microbial mounds was halted by a sudden increase of terrestrial inputs and rapid transgression. Early Griesbachian conodonts of Hindeodus parvus? were identified from the mound limestone and the overlying strata of the second member of the FXG Formation, which is suggestive of the presence of a microbialite-dominated ocean in the Upper Yangtze Region during a certain interval after the LPME.

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There was no “Great Bank of Guizhou” in the Early Triassic in Guizhou Province South China

Cited by 20 publications

References 2 publications

Precise age for the Permian–Triassic boundary in South China from high-precision U-Pb geochronology and Bayesian age–depth modeling

Precise age for the Permian–Triassic boundary in South China from high-precision U-Pb geochronology and Bayesian age–depth modeling

Asia–Gondwana connections indicated by Devonian fishes from Australia: palaeogeographic considerations

Early Triassic Griesbachian microbial mounds in the Upper Yangtze Region, southwest China: Implications for biotic recovery from the latest Permian mass extinction

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