globalchange  > 气候变化与战略
DOI: 10.1016/j.earscirev.2019.102951
论文题名:
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
作者: Li P.; Sun M.; Shu C.; Yuan C.; Jiang Y.; Zhang L.; Cai K.
刊名: Earth Science Reviews
ISSN: 00128252
出版年: 2019
卷: 198
语种: 英语
中文关键词: Central Asian Orogenic Belt ; Detrital zircon geochronology ; Tasmanides ; Terrane accretion ; Trench retreat
英文关键词: accretion ; comparative study ; detrital deposit ; geochronology ; orogenic belt ; Paleozoic ; Proterozoic ; trench ; zircon ; Central Asia ; Siberia
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.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165850
Appears in Collections:气候变化与战略

Files in This Item:

There are no files associated with this item.


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

Recommended Citation:
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]. Earth Science Reviews,2019-01-01,198
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Li P.]'s Articles
[Sun M.]'s Articles
[Shu C.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Li P.]'s Articles
[Sun M.]'s Articles
[Shu C.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Li P.]‘s Articles
[Sun M.]‘s Articles
[Shu C.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.