Conodont biostratigraphy of a new Permo-Triassic boundary section at Wenbudangsang, north Tibet

Wu, Guichun; Ji, Zhongqiang; Trotter, Julie; Yao, Jianxin; Liqin, Zhou

doi:10.1016/j.palaeo.2014.06.016

Cited by 36 publications

(18 citation statements)

References 22 publications

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“…Studies investigating Triassic conodont biostratigraphy in Tibet were initially performed in southern Tibet in the mid-1970s (Wang and Wang, 1976). To date, marine Triassic sections have been shown to cover the Lhasa terrane (Ji et al, 2006(Ji et al, , 2007a(Ji et al, , 2010Wu et al, 2007Wu et al, , 2014Wu et al, , 2017Wu et al, , 2018Zheng et al, 2007) and the Qiangtang terrane (Xia and Zhang, 2005;Guizhou Institute of Geological Survey, 2005;Zhang et al, 2005;Li et al, 2018). The recognized conodont biozones from different parts of Tibet could be well correlated with the international zones established by Sweet et al (1970) (Fig.…”

Section: Conodont Correlationsmentioning

confidence: 99%

“…Triassic conodont studies in the Lhasa terrane began in the 1980s, focusing on regions near Lhasa City, where only the Early Triassic Triasspathodus homeri zone and Norian Epigon dolella fauna of the Late Triassic were reported (Sun et al, 1981;Ji et al, 2003). Dramatic progress was achieved in the 21 st century, with successive discoveries of more marine Triassic sections (Ji et al, 2006(Ji et al, , 2007a(Ji et al, , 2007b(Ji et al, , 2007c(Ji et al, , 2010Zheng et al, 2007;Wu et al, 2007Wu et al, , 2014Wu et al, , 2017Wu et al, , 2018. A complete conodont succession ranging from the Late Permian to the Triassic has thus been established, based on the limestonedominated Dibuco section (Ji et al, 2006;Wu et al, 2007) and the Wenbudangsang section (Wu et al, 2014).…”

Section: Correlation With the Lhasa Terranementioning

confidence: 99%

“…Dramatic progress was achieved in the 21 st century, with successive discoveries of more marine Triassic sections (Ji et al, 2006(Ji et al, , 2007a(Ji et al, , 2007b(Ji et al, , 2007c(Ji et al, , 2010Zheng et al, 2007;Wu et al, 2007Wu et al, , 2014Wu et al, , 2017Wu et al, , 2018. A complete conodont succession ranging from the Late Permian to the Triassic has thus been established, based on the limestonedominated Dibuco section (Ji et al, 2006;Wu et al, 2007) and the Wenbudangsang section (Wu et al, 2014). The dolomite-type succession has also been recognized in the Zozo section (Ji et al, 2007a;Zheng et al, 2007) and the Namutso section (Wu et al, 2017) (Fig.…”

Section: Correlation With the Lhasa Terranementioning

confidence: 99%

“…However, Triassic sedimentary data remain rare at present, especially in the BNSZ, where a Lower Triassic deposit has never been reported and is thus believed to be missing, which contrasts greatly with adjacent areas where Triassic marine sediments were disclosed to be well developed. For example, in the Lhasa terrane to the south, Lower Triassic deposits are widespread in the western portion (Ji et al, 2006(Ji et al, , 2007a(Ji et al, , 2007b(Ji et al, , 2007cWu et al, 2007Wu et al, , 2014Wu et al, , 2017Wu et al, , 2018Zheng et al, 2007), and a complete Triassic succession has been established in accordance with the sections found in the Coqen and Wenbudangsang areas (Ji et al, 2007b;Wu et al, 2007Wu et al, , 2014, implying that the west Lhasa terrane was in a carbonate platform setting during the Triassic (Ji et al, 2018a;. Similar deposits were found in South Qiangtang as well (Guizhou Institute of Geological Survey, 2005;Zhang et al, 2005;Li et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

New biostratigraphic evidence of Late Permian to Late Triassic deposits from Central Tibet and their paleogeographic implications

Liao

et al. 2019

Lithosphere

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Triassic deposits in the Bangong-Nujiang Suture Zone are important for understanding its tectonic nature and evolutionary history, but have not been systematically studied due to a lack of biostratigraphic data. For a long time, the Upper Triassic Quehala Group featuring clasolite has been regarded as the only rocky unit. In recent years, the silicite-dominated Gajia Formation that bears radiolarian fossils was suggested to represent Ladinian to Carnian deposits. The Upper Permian and Lower Triassic rocks have never been excavated and thus are considered to be absent. This research, however, reveals that fossils aged from the Late Permian to Anisian of the Middle Triassic and Norian of the Late Triassic have been preserved in the central Bangong-Nujiang Suture Zone, which provides evidence of Upper Permian to early Middle Triassic deposits and provides new insights on the Upper Triassic strata as well. A new Triassic strata succession is thus proposed for the Bangong-Nujiang Suture Zone, and it demonstrates great similarities with those from Lhasa to the south and Qiangtang to the north. Therefore, we deduce that the Bangong-Nujiang Suture Zone was under a similar depositional setting as its two adjacent terranes, and it was likely a carbonate platform background because limestones were predominant across the Triassic. The newly acquired biostratigraphic data indicate that Lhasa and Qiangtang could not have been located on two separate continents with disparate sedimentary settings; therefore, the Bangong-Nujiang Suture Zone likely did not represent a large ocean between them. This conclusion is supported by lithostratigraphic and paleomagnetic research, which revealed that Lhasa and Qiangtang were positioned at low to middle latitudes during the Early Triassic. Combining this conclusion with fossil evidence, we suggest that the three main Tibetan terranes were in the same palaeobiogeographic division with South China, at least during the Latest Permian to Early Triassic. The Early Triassic conodont species Pachycladina obliqua is probably a fossil sign of middle to low latitudes in palaeogeography.

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Section: Conodont Correlationsmentioning

confidence: 99%

Section: Correlation With the Lhasa Terranementioning

confidence: 99%

Section: Correlation With the Lhasa Terranementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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New biostratigraphic evidence of Late Permian to Late Triassic deposits from Central Tibet and their paleogeographic implications

Liao

et al. 2019

Lithosphere

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“…Although there are a few upper Permian marine deposits in the Lhasa terrane (Chen et al 1999;Wu et al 2014), the contact between the middle Permian-upper Permian Xiala Formation and the overlying upper Permian Dibuco formations is an angular unconformity, and a palaeo-weathered crust and conglomerate are preserved on the surface of the unconformity (Figure 7; Zhou et al 2002;Wang et al 2013), indicating partial uplift of the Lhasa terrane above sea level and a significant period of erosion before the upper Permian.…”

Section: Provenance Of the Tianquanshan Formationmentioning

confidence: 99%

Depositional environment and provenance of the upper Permian–Lower Triassic Tianquanshan Formation, northern Tibet: implications for the Palaeozoic evolution of the Southern Qiangtang, Lhasa, and Himalayan terranes in the Tibetan Plateau

Fan

Xie

et al. 2015

International Geology Review

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This article reports the depositional environment and provenance for the Tianquanshan Formation in the Longmuco-Shuanghu-Lancangjiang suture zone, and uses these to better understand the tectonic evolution of this region. Zircons in the andesite of the Tianquanshan Formation yielded concordia ages of 246, 247, and 254 Ma, indicating that the Tianquanshan Formation formed during the late Permian-Early Triassic. The Tianquanshan Formation consists of flysch and ocean island rock assemblages, indicating that the Longmuco-Shuanghu-Lancangjiang Palaeo-Tethys Ocean continued to exist as a mature ocean in the late Permian-Early Triassic. The detrital zircons in the greywackes of the Tianquanshan Formation yielded peak ages of 470-

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First discovery of Wuchiapingian (Late Permian) foraminiferal fauna from the Zhari Namco area, central Lhasa Block, Tibet, and their palaeogeographic implications

Zhang

Feng

et al. 2022

Geological Journal

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A new foraminiferal fauna is reported from the upper part of the Xiala Formation in the Zhari Namco section in the central Lhasa Block, which contains three species of fusulines and 26 species of small foraminifers. The presence of Reichelina and Codonofusiella in the fauna suggests a Wuchiapingian age. A review of the Lopingian faunas in several localities in the Lhasa Block indicates that this block was under a shallow marine environment during the Lopingian, rather than an uplifted terrestrial environment as previously recognized. The Lopingian palaeobiogeography as well as the sequences of the Lhasa Block differs greatly from the adjacent South Qiangtang, Karakorum and South Pamir blocks, and the Tethys Himalaya region of the Indian Plate. It further suggests that the Lhasa Block was separated from the South Qiangtang Block in the north by the Bangong‐Nujiang Ocean and the Tethys Himalaya area in the south by the Neotethys Ocean during the Lopingian time. Furthermore, the dissimilarity of the Guadalupian and Lopingian strata and faunas between the Lhasa and Karakorum blocks and similarity between the Lhasa and Tengchong blocks, may suggest that the Lhasa and Tengchong blocks were linked together during the Permian.

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Conodont biostratigraphy of a new Permo-Triassic boundary section at Wenbudangsang, north Tibet

Cited by 36 publications

References 22 publications

New biostratigraphic evidence of Late Permian to Late Triassic deposits from Central Tibet and their paleogeographic implications

New biostratigraphic evidence of Late Permian to Late Triassic deposits from Central Tibet and their paleogeographic implications

Depositional environment and provenance of the upper Permian–Lower Triassic Tianquanshan Formation, northern Tibet: implications for the Palaeozoic evolution of the Southern Qiangtang, Lhasa, and Himalayan terranes in the Tibetan Plateau

First discovery of Wuchiapingian (Late Permian) foraminiferal fauna from the Zhari Namco area, central Lhasa Block, Tibet, and their palaeogeographic implications

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