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DOI	10.1016/j.earscirev.2023.104384
	High-resolution Early Triassic ammonoid biostratigraphy of South Tibet, China and implications for global correlations
	Dai, Xu; Brayard, Arnaud; Ware, David; Jiang, Shouyi; Li, Mingtao; Wang, Fengyu; Liu, Xiaokang; Song, Haijun
发表日期	2023
ISSN	0012-8252
EISSN	1872-6828
卷号	239
英文摘要	Ammonoids are key fossil indexes for Triassic biochronology, as all Triassic stages and substages were initially defined on ammonoid faunas. In recent decades, the temporal resolution of ammonoid biostratigraphical scales for the Early Triassic has been greatly improved. However, many uncertainties in zones correlation and super-positions remain, mainly due to sampling heterogeneities, preservation biases, and faunal endemicity. In this work, we present the first comprehensive Early Triassic ammonoid zonation from South Tibet, China, a previ-ously poorly investigated region. Ammonoids were sampled from the Kangshare Formation at four sections (Selong, Paizi, Qubu and Xialong), representing a total of 140 species, ranging from the Griesbachian to the Smithian. These new robust data allow the construction of a high-resolution biostratigraphy using the Unitary Association (UA) method. A total of 22 Unitary Association zones (UAZs) were recognized, including two UAZs for the Griesbachian, nine for the Dienerian, and 11 for the Smithian. Then, we integrated data from neighboring basins, i.e., Spiti (India) and the Salt Range (Pakistan), and the new data from South Tibet to construct synthetic, laterally reproducible Dienerian-Smithian ammonoid UAZs, which include 12 UAZs for the Dienerian and 16 UAZs for the Smithian. Based on the newly obtained data and high-resolution biostratigraphic scales, we revised global correlations known for the ammonoid biostratigraphy in the Griesbachian, Dienerian and Smithian. Finally, the high-resolution ammonoid zones are generally in agreement with conodont zones in defining stage/ substage boundaries. They also provide a robust and accurate time calibration for Early Triassic carbon isotope trends and temperature changes.
关键词	South Tibet Neotethys Unitary Association zone Griesbachian Dienerian Smithian
英文关键词	SELONG XISHAN SECTION; PERMIAN BRACHIOPODS; QUBUERGA FORMATION; OSAWA FORMATION; KITAKAMI BELT; NORTHWESTERN GUANGXI; DIVERSITY DYNAMICS; QOMOLANGMA REGION; XIZANG TIBET; ELKO COUNTY
WOS研究方向	Geosciences, Multidisciplinary
WOS记录号	WOS:000957778800001
来源期刊	EARTH-SCIENCE REVIEWS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282618
作者单位	China University of Geosciences - Wuhan; Centre National de la Recherche Scientifique (CNRS); Universite de Bourgogne; Leibniz Institut fur Evolutions und Biodiversitatsforschung; Linyi University
推荐引用方式 GB/T 7714	Dai, Xu,Brayard, Arnaud,Ware, David,et al. High-resolution Early Triassic ammonoid biostratigraphy of South Tibet, China and implications for global correlations[J],2023,239.
APA	Dai, Xu.,Brayard, Arnaud.,Ware, David.,Jiang, Shouyi.,Li, Mingtao.,...&Song, Haijun.(2023).High-resolution Early Triassic ammonoid biostratigraphy of South Tibet, China and implications for global correlations.EARTH-SCIENCE REVIEWS,239.
MLA	Dai, Xu,et al."High-resolution Early Triassic ammonoid biostratigraphy of South Tibet, China and implications for global correlations".EARTH-SCIENCE REVIEWS 239(2023).