New constraints on the pre-Permian continental crust growth of Central Asia (West Junggar, China) by U-Pb and Hf isotopic data from detrital zircon

被引：82

作者：

Choulet, Flavien ^{[1
]}

Cluzel, Dominique ^{[2
]}

Faure, Michel ^{[1
]}

Lin, Wei ^{[3
]}

Wang, Bo ^{[4
]}

Chen, Yan ^{[1
]}

Wu, Fu-Yuan ^{[3
]}

Ji, Wenbin ^{[3
]}

机构：

[1] Univ Orleans, CNRS, Inst Sci Terre Orleans, UMR 6113, F-45071 Orleans 2, France

[2] Univ Nouvelle Caledonie, Pole Pluri Disciplinaire Mat & Environm EA 3325, Noumea 98851, New Caledonia

[3] Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China

[4] Nanjing Univ, Dept Earth Sci, Nanjing 210008, Jiangsu, Peoples R China

来源：

TERRA NOVA | 2012年 / 24卷 / 03期

关键词：

PALEOZOIC TECTONIC EVOLUTION; NW CHINA; NORTHERN XINJIANG; ACCRETIONARY OROGENESIS; PART I; AGES; GEOCHEMISTRY; KAZAKSTAN; BASEMENT; REGION;

D O I：

10.1111/j.1365-3121.2011.01052.x

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Terra Nova, 24, 189198, 2012 Abstract In situ UPb geochronology of detrital zircons from various Palaeozoic sedimentary rocks of West Junggar accretionary complexes (Central Asia) suggests two distinct episodes of arc magmatism, and an evolution in three steps: (i) Ordovician-Silurian subduction generating juvenile arc crust; (ii) Late Silurian subduction jamming, erosion and intraplate magmatism; (iii) development of two new opposed Devonian-Carboniferous subductions recycling the Early Palaeozoic crust. Zircon Hf isotopes document three pre-Permian episodes of mantle-derived magmatic input into the crust: (1) Neoproterozoic (850550 Ma), (2) Early Palaeozoic (530450 Ma) and (3) Late Palaeozoic (380320 Ma). Zircons also record the recycling of Neoproterozoic and Early Palaeozoic juvenile crusts during the Early and Late Palaeozoic. These data support a model of episodic continental crust growth in Central Asia.

引用

页码：189 / 198

页数：10

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