Accretionary processes of the central segment of Beishan: Constraints from structural deformation and Ar-40-Ar-39 geochronology
文献类型：期刊论文
| 作者 | Song DongFang1,2; Xiao WenJiao1,2,3,4; Han ChunMing1,2,3; Tian ZhongHua5; Li YongChen1,2 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2018 |
| 卷号 | 34期号:7页码:2087-2098 |
| 关键词 | Beishan Deformation Ar-40-Ar-39 chronology Late Paleozoic-early Mesozoic Subduction-accretion polarity |
| ISSN号 | 1000-0569 |
| 英文摘要 | The Beishan Orogenic Belt is a key area for understanding the accretionary tectonics of the southern Central Asian Orogenic Belt. The pervasively deformed metamorphic complexes and associated intrusive rocks from the central segment of Beishan are keys to illuminating the accretionary history of Beishan Orogenic Belt. In order to put constraints on the timing of metamorphism-deformation for the rocks in the central Beishan, this study carried out field geological, microstructural and Ar-40-Ar-39 geochronological studies on these rocks. The rocks from the central Beishan have undergone widespread ductile shearing deformation. Biotite Ar-40-Ar-39 dating on four samples yield respective plateau ages of 323.1 +/- 3. 6Ma, 296.0 +/- 3. 7Ma, 261.2 +/- 3. 1Ma and 209.2 +/- 4.0Ma, which are younging from the north to the south. Combined with the spatial-temporal distribution of major litho-tectonic units, these data reveal a northward subduction of oceanic plate (Niujuanzi Ocean) and southward accretion of the orogen during the Paleozoic-Early Mesozoic in the central segment of Beishan. The last orogenic pulse of the Beishan may have extended to the Triassic. |
| WOS关键词 | ASIAN OROGENIC BELT ; NW CHINA ; U-PB ; TIANSHAN ; COLLAGE ; ARC ; TECTONICS ; AGE ; KINEMATICS ; EVOLUTION |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000451724300016 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/89641]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Song DongFang |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Lithospher Evolut, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 3.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100029, Peoples R China 4.Chinese Acad Sci, Xinjiang Res Ctr Mineral Resources, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China 5.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China |
| 推荐引用方式 GB/T 7714 | Song DongFang,Xiao WenJiao,Han ChunMing,et al. Accretionary processes of the central segment of Beishan: Constraints from structural deformation and Ar-40-Ar-39 geochronology[J]. ACTA PETROLOGICA SINICA,2018,34(7):2087-2098. |
| APA | Song DongFang,Xiao WenJiao,Han ChunMing,Tian ZhongHua,&Li YongChen.(2018).Accretionary processes of the central segment of Beishan: Constraints from structural deformation and Ar-40-Ar-39 geochronology.ACTA PETROLOGICA SINICA,34(7),2087-2098. |
| MLA | Song DongFang,et al."Accretionary processes of the central segment of Beishan: Constraints from structural deformation and Ar-40-Ar-39 geochronology".ACTA PETROLOGICA SINICA 34.7(2018):2087-2098. |
入库方式： OAI收割
来源：地质与地球物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。