Crustal-Scale Disharmonic Structural Pattern of West Junggar: Unveiling a Permian Indentation of Junggar Block Into Northern Kazakhstan Orocline
文献类型：期刊论文
| 作者 | Miao, Yazhou1,6; Zhang, Jian1,6; Schulmann, Karel5,7; Guy, Alexandra7; Jiang, Yingde4 ; Sun, Min2; Zhang, Shuhui1,6; Wang, Sheng3
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| 刊名 | TECTONICS
 |
| 出版日期 | 2023-05-01 |
| 卷号 | 42期号:5页码:30 |
| 关键词 | CAOB West Junggar indentation deformational history structural evolution accretion |
| ISSN号 | 0278-7407 |
| DOI | 10.1029/2022TC007689 |
| 英文摘要 | As a crustal-scale orocline in the Central Asian Orogenic Belt (CAOB), the Kazakhstan Orocline in particular its northern limb intervenes the Junggar Block and Chinese Altai. The West Junggar exhibits a structural pattern that is disharmonic from the major structure of the orocline. How and when such a structural complexity was formed remains poorly understood. To address this issue, we carried out detailed mapping, structural analysis and revision of geophysical data in three key areas of the West Junggar. It is shown that different arc chains experienced independent geological histories before they accreted with one another. Such an accretionary process generated the regional D1 deformation in late Carboniferous. Subsequent D2 shortening event produced variable superimposed structures, including crescent-mushroom-like folding in the Boshchekul-Chingiz Arc and partitioned sinistral shearing of the West Karamay Unit. The synformal folding in the Zharma-Saur Arc and crustal-scale Erqis-Zaysan sinistral strike-slip shearing in late Permian-Triassic probably resulted from changing configuration of regional stress. Combined with previous data, we propose that the orogenic fabrics of arc chains and accretionary wedges were primarily related to shaping the basic structural framework of the Kazakhstan Orocline until late Carboniferous. The anticlockwise rotation of the northern limb of the orocline was associated with the indentation of the Junggar Block into the arc chains. Progressive indentation resulted in the first passive bending of arc chains followed by deformation partitioning into simple shear dominated transpression along the western margin of the Junggar Block and pure shear dominated transpression away from the indenter. |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001000279100001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/74310]  |
| 专题 | 同位素地球化学国家重点实验室 |
| 通讯作者 | Zhang, Jian; Schulmann, Karel |
| 作者单位 | 1.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zuhai, Peoples R China 2.Univ Hong Kong, Dept Earth Sci, Pokfulam, Hong Kong, Peoples R China 3.Anhui Jianzhu Univ, Sch Civil Engn, Hefei, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou, Peoples R China 5.Univ Strasbourg, Inst Terre & Environm Strasbourg, CNRS, UMR 7063, Strasbourg, France 6.Sun Yat Sen Univ, Sch Earth Sci & Engn, Guangzhou, Peoples R China 7.Czech Geol Survey, Ctr Lithospher Res, Prague, Czech Republic |
| 推荐引用方式 GB/T 7714 | Miao, Yazhou,Zhang, Jian,Schulmann, Karel,et al. Crustal-Scale Disharmonic Structural Pattern of West Junggar: Unveiling a Permian Indentation of Junggar Block Into Northern Kazakhstan Orocline[J]. TECTONICS,2023,42(5):30. |
| APA | Miao, Yazhou.,Zhang, Jian.,Schulmann, Karel.,Guy, Alexandra.,Jiang, Yingde.,...&Wang, Sheng.(2023).Crustal-Scale Disharmonic Structural Pattern of West Junggar: Unveiling a Permian Indentation of Junggar Block Into Northern Kazakhstan Orocline.TECTONICS,42(5),30. |
| MLA | Miao, Yazhou,et al."Crustal-Scale Disharmonic Structural Pattern of West Junggar: Unveiling a Permian Indentation of Junggar Block Into Northern Kazakhstan Orocline".TECTONICS 42.5(2023):30. |
入库方式： OAI收割
来源：广州地球化学研究所
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