气候变化领域集成服务门户(CCPortal): Upper Viséan coral biostrome in a volcanic-sedimentary setting from the Eastern Tianshan; Northwest China

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DOI	10.1016/j.palaeo.2018.04.014
	Upper Viséan coral biostrome in a volcanic-sedimentary setting from the Eastern Tianshan; Northwest China
	Huang X.; Aretz M.; Zhang X.; Du Y.; Luan T.
发表日期	2019
ISSN	0031-0182
卷号	531
英文摘要	For the first time, a Mississippian coral biostrome is described from the Eastern Tianshan, Xinjiang Province, Northwest China. Rugose corals and foraminifers show that the biostrome developed during the late Viséan in one of the rare carbonate levels in the mainly volcanic-siliciclastic succession of the Yamansu Formation. A single fasciculate coral, Siphonodendron irregulare, dominates (>80%) this biostrome. Of the 22 coral genera found in the Yamansu Formation, 5 colonial and 6 solitary dissepimented corals are recorded in the biostrome. The biostrome can be divided vertically into two parts. In the main thick part dominate large patches of in situ Siphonodendron irregulare colonies. In the thinner uppermost part, Siphonodendron irregulare and Lithostrotion formed locally isolated small patches in a capping bed. The initial growth of the coral patches was related to slight topographic irregularities in the underlying volcano-sedimentary rocks. Siphonodendron irregulare appears to have been the best adapted species to the environmental pressures in the unstable tectono-sedimentary environment of the Yamansu Formation. It flourished and outnumbered the other corals when volcanic activity ceased and carbonate production became active for a short time. The development of the Siphonodendron biostrome ceased due to increases in sea-level and volcanic activity. Compared to Siphonodendron biostromes in the western and eastern Paleotethys, the Siphonodendron biostrome in Yamansu is unique for having developed in an island arc setting. To date, the Yamansu biostrome is the only documented coral bioconstruction at similar latitudes in the Central Asian Orogenic Belt (CAOB). Formation of this coral biostrome was controlled by extrinsic factors, such as changes in global climate and ocean currents, and intrinsic factors, such as the pioneering nature of the fast-growing Siphonodendron irregulare. Both sets of factors are responsible for the expansion of the tropical reef belt into previously more temperate environments. © 2018 Elsevier B.V.
英文关键词	Biostratigraphy; Mississippian; Northwest China; Paleoecology; Siphonodendron biostrome
语种	英语
scopus关键词	biostratigraphy; biostrome; coral; foraminifera; island arc; orogenic belt; paleoecology; sedimentary sequence; siliciclastic deposit; Visean; volcanic landform; China; Tien Shan; Xinjiang Uygur; Anthozoa; Foraminifera
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150881
作者单位	School of Earth Sciences, China University of Geosciences, Wuhan, 430074, China; State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, 430074, China; GET, Université de Toulouse, CNRS, IRD, UPS, Toulouse, 31400, France; The 7th Institute of Geology and Mineral Exploration of Shandong Province, Linyi, 276006, China
推荐引用方式 GB/T 7714	Huang X.,Aretz M.,Zhang X.,et al. Upper Viséan coral biostrome in a volcanic-sedimentary setting from the Eastern Tianshan; Northwest China[J],2019,531.
APA	Huang X.,Aretz M.,Zhang X.,Du Y.,&Luan T..(2019).Upper Viséan coral biostrome in a volcanic-sedimentary setting from the Eastern Tianshan; Northwest China.Palaeogeography, Palaeoclimatology, Palaeoecology,531.
MLA	Huang X.,et al."Upper Viséan coral biostrome in a volcanic-sedimentary setting from the Eastern Tianshan; Northwest China".Palaeogeography, Palaeoclimatology, Palaeoecology 531(2019).