气候变化领域集成服务门户(CCPortal): Evolution of the Central Asian Orogenic Belt along the Siberian margin from Neoproterozoic-Early Paleozoic accretion to Devonian trench retreat and a comparison with Phanerozoic eastern Australia

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DOI	10.1016/j.earscirev.2019.102951
	Evolution of the Central Asian Orogenic Belt along the Siberian margin from Neoproterozoic-Early Paleozoic accretion to Devonian trench retreat and a comparison with Phanerozoic eastern Australia
	Li P.; Sun M.; Shu C.; Yuan C.; Jiang Y.; Zhang L.; Cai K.
发表日期	2019
ISSN	0012-8871
卷号	198
英文摘要	The Central Asian Orogenic Belt (CAOB), the largest accretionary orogen on Earth, has received considerable attention in the last 25 years. Various models have been proposed to explain the evolution of the CAOB, incorporating processes such as the lateral duplication of one single arc system along large shear zones, terrane accretion/amalgamation, oroclinal bending, ridge subduction, and trench migration. To better understand accretionary processes along the southwestern Siberian margin, we synthesized new and published detrital zircon and Hf isotope data from various tectonic units along the southwestern Siberian margin. Our results show that the accretion of microcontinents and island arcs might have dominated the southwestern Siberian margin in the Neoproterozoic. This was followed, during the Early Paleozoic, by the development of a very large accretionary wedge system. An abrupt increase of zircon εHf(t) during the earliest Devonian is explained by a major phase of trench retreat. A comparison of our results with another major Phanerozoic accretionary orogen, the Tasmanides in eastern Australia, shows a similar behavior of episodic trench retreat. We further suggest that the Late Mesozoic to Cenozoic fragmentation of the eastern Gondwanan margin, and the formation of multiple island arcs within marginal sea basins in the southwestern Pacific Ocean, is a possible analogue for the Late Paleozoic development of the East Junggar island arc system in the CAOB. © 2019 Elsevier B.V.
英文关键词	Central Asian Orogenic Belt; Detrital zircon geochronology; Tasmanides; Terrane accretion; Trench retreat
语种	英语
scopus关键词	accretion; comparative study; detrital deposit; geochronology; orogenic belt; Paleozoic; Proterozoic; trench; zircon; Central Asia; Siberia
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/209800
作者单位	State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; Department of Earth Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong; School of Earth Science and Resources, China University of Geosciences, Beijing, 100083, China
推荐引用方式 GB/T 7714	Li P.,Sun M.,Shu C.,et al. Evolution of the Central Asian Orogenic Belt along the Siberian margin from Neoproterozoic-Early Paleozoic accretion to Devonian trench retreat and a comparison with Phanerozoic eastern Australia[J],2019,198.
APA	Li P..,Sun M..,Shu C..,Yuan C..,Jiang Y..,...&Cai K..(2019).Evolution of the Central Asian Orogenic Belt along the Siberian margin from Neoproterozoic-Early Paleozoic accretion to Devonian trench retreat and a comparison with Phanerozoic eastern Australia.EARTH-SCIENCE REVIEWS,198.
MLA	Li P.,et al."Evolution of the Central Asian Orogenic Belt along the Siberian margin from Neoproterozoic-Early Paleozoic accretion to Devonian trench retreat and a comparison with Phanerozoic eastern Australia".EARTH-SCIENCE REVIEWS 198(2019).