Crustal structure beneath the southwestern Xing'an-Mongolia Orogenic Belt revealed by receiver function analysis
文献类型：期刊论文
| 作者 | Zhang KaiWen2,3,4; Chen QiFu2,3,4; Chen Yun1,3,4 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2020-04-01 |
| 卷号 | 63期号:4页码:1484-1504 |
| 关键词 | Xing'an-Mongolian Orogenic Belt Receiver functions Crustal anisotropy Crustal thickness V-P/V-s ratio |
| ISSN号 | 0001-5733 |
| DOI | 10.6038/cjg2020N0048 |
| 英文摘要 | The Xing' an-Mongolian Orogenic Belt (XMOB) is tectonically located in the area surrounded by the Siberian Craton to the north, the North China Craton to the south and the western Pacific Plate to the east. The tectonic evolution in the area was recognized closely related to the Paleo-Asian Ocean and Paleo-Pacific Ocean regimes during the Paleozoic-Early Mesozoic and related to the western Pacific Ocean and Mongol-Okhotsk Ocean regimes during and after the Mesozoic. Therefore, the XMOB is a key area to understand the NE Asian tectonic evolution and its tectonic transition from contractional thickened crust to extensional thinning. Several tectonic models, often conflicting, have been proposed to explain the evolution of the XMOB. The solution of such problems requires a better understanding of deep structure of the crust and mantle. In this study, we use the maximum entropy deconvolution method to obtain 24027 high-quality P-wave receiving function data recorded by our deployed temporary broadband seismic stations in the phase 3 of the NECsaids array, regional permanent stations and temporary stations from NECESSArray covering the southwestern XMOB. We applied the H-kappa and CCP stacking techniques and the joint inversion scheme to estimate crustal thickness (H), velocity ratio V-p/V-s (kappa) and crustal anisotropy (fast polarization direction phi and splitting time delta t). Our results show that the dominant directions of fast wave polarity in the study area are near NW and EW, which is consistent with the regional velocity field and the absolute plate motion direction, and it reveals that the crustal structure of the southwestern XMOB is dominated by the subducting western Pacific Plate. The Great Xing'an-Taihangshan or the North-South Gravity Lineament (NSGL) is an important transition zone of the southwestern XMOB crustal structure. The crustal thickness is generally high in the west side of the NSGL and low in the east side of the NSGL, while the average crustal velocity ratio (V-P/V-s) is low on both sides of the NSGL. Some stations with relative high V-P/V-s and complex anisotropic observations may represent regional fault influences and/or localized imprints of the Cenozoic volcanic activities such as the Shuangliao and Abaga volcanic cluster. The thickened crust and the complex anisotropic observations in the Erlian Basin may reflect the overprinting of the closure of the Paleo-Asian Ocean and the evolution process of the Mongolian-Okhotsk and the Paleo-Pacific tectonic regime. |
| WOS关键词 | NORTH CHINA CRATON ; NE CHINA ; SEISMIC ANISOTROPY ; SOUTHERN CALIFORNIA ; POISSON RATIO ; VOLCANISM ; TOMOGRAPHY ; THICKNESS ; STACKING ; HISTORY |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000524071300019 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/95551]  |
| 专题 | 地质与地球物理研究所_中国科学院地球与行星物理重点实验室 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 | Chen QiFu |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China 4.Chinese Acad Sci, Key Lab Earth & Planetary Phys, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang KaiWen,Chen QiFu,Chen Yun. Crustal structure beneath the southwestern Xing'an-Mongolia Orogenic Belt revealed by receiver function analysis[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2020,63(4):1484-1504. |
| APA | Zhang KaiWen,Chen QiFu,&Chen Yun.(2020).Crustal structure beneath the southwestern Xing'an-Mongolia Orogenic Belt revealed by receiver function analysis.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,63(4),1484-1504. |
| MLA | Zhang KaiWen,et al."Crustal structure beneath the southwestern Xing'an-Mongolia Orogenic Belt revealed by receiver function analysis".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 63.4(2020):1484-1504. |
入库方式： OAI收割
来源：地质与地球物理研究所
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