Crustal structure and magmatic evolution in the Pearl River Delta of the Cathaysia Block: New constraints from receiver function modeling
文献类型：期刊论文
| 作者 | Huang, Haibo4,5; Xiong, Hou3; Qiu, Xuelin1,4,5; Li, Yuhan1 |
| 刊名 | TECTONOPHYSICS
 |
| 出版日期 | 2020 |
| 卷号 | 778页码:228365 |
| ISSN号 | 1879-3266 |
| DOI | 10.1016/j.tecto.2020.228365 |
| 英文摘要 | We utilized receiver functions to study the crustal structure beneath the Pearl River Delta in the southwestern part of the Cathaysia Block, which was characterized by widespread tectono-magmatism during the late Mesozoic. Combination of waveform modeling and H-k stacking was used to derive crustal thickness, V-p/V-s ratio and average P-wave velocity. The results show that the crustal thickness ranges from 26 km in the center of the Pearl River Delta to 32 km in the periphery; the V-p/V-s ratio is between similar to 1.70 and 1.74. The average P-wave velocity ranges from 6.4 to 6.8 km/s and shows higher value beneath the islands along the Lianhuashan Fault zone. A weakly positive correlation between the crustal thickness and V-p/V-s ratio is observed in southwestern Pearl River Delta, indicating depth-dependent extension of the continental crust, that is, ductile lower crust was stretched to a much higher degree in comparison with the brittle felsic upper crust. The crust in the northeastern Pearl River Delta may be more basaltic owing to underplating caused by the subduction of the Paleo-Pacific Plate, and thus a relatively high V-p/V-s ratio is observed there. The overall low crustal V-p/V-s ratio and the relatively higher crustal P-wave velocities beneath the Lianhuashan Fault zone may imply a felsic-intermediate composition and high metamorphic grade of the crust along the fault. The Lianhuashan Fault zone may provide a pathway for rapid magmatic transportation from the underplating beneath the crust to the surface. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18569]  |
| 专题 | 南海海洋研究所_中科院边缘海地质重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Innovat Acad South China Sea Ecol & Environm Engn, Guangzhou 510301, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China 3.Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Ocean & Marginal Sea Geol, Guangzhou, Peoples R China 4.China Earthquake Adm, Seism Stn SZN Shenzhen, Shenzhen, Peoples R China 5.South Marine Sci & Engn Guangdong Lab Guangzhou, Guangzhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Haibo,Xiong, Hou,Qiu, Xuelin,et al. Crustal structure and magmatic evolution in the Pearl River Delta of the Cathaysia Block: New constraints from receiver function modeling[J]. TECTONOPHYSICS,2020,778:228365. |
| APA | Huang, Haibo,Xiong, Hou,Qiu, Xuelin,&Li, Yuhan.(2020).Crustal structure and magmatic evolution in the Pearl River Delta of the Cathaysia Block: New constraints from receiver function modeling.TECTONOPHYSICS,778,228365. |
| MLA | Huang, Haibo,et al."Crustal structure and magmatic evolution in the Pearl River Delta of the Cathaysia Block: New constraints from receiver function modeling".TECTONOPHYSICS 778(2020):228365. |
入库方式： OAI收割
来源：南海海洋研究所
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