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| DOI | 10.1016/j.epsl.2007.06.009 |
| The crust and upper mantle structure beneath southeastern China | |
| Ai, Yinshuang; Chen, Qi-fu; Zeng, Fei; Hong, Xing; Ye, Wenyan | |
| 发表日期 | 2007 |
| ISSN | 0012-821X |
| EISSN | 1385-013X |
| 起始页码 | 549 |
| 结束页码 | 563 |
| 卷号 | 260期号:3-4 |
| 英文摘要 | We analyzed teleseismic waveforms recorded by 44 stations in the Fujian and Taiwan provinces of China and obtained 5344 high quality receiver functions. The crustal thickness (H) and average crustal V-p/V-s ratio (k) beneath every station were estimated using the H k stacking method. Crustal thicknesses near the Fujian Province range from 28.3 to 32.8 km with an average of 31.1 km, and the corresponding V-p/V-s ratios vary from 1.70 to 1.84 with a mean of 1.76. From inland to offshore of the Fujian Province, the crustal thicknesses decrease and Poisson's ratios increase. These may indicate decreasing SiO2 and increasing calc-alkaline contents in the crust. The discontinuity structures such as the Moho, subducting slab, the 410- and 660-km discontinuities (hereafter we call them the 410 and the 660) are also studied using common converted point (CCP) stacking of receiver functions. Along two NW-SE lines of central and northern Taiwan, the CCP stacking results show a western dipping structure at depths above 50 km, suggesting that the Philippine Sea plate is probably subducting beneath the Eurasian continent plate near the central and northern Taiwan. The CCP stacking results show sharp and flat 410- and 660-km discontinuities, and the transition zone thickness (TZT) is the same as that of ambient mantle beneath Fujian and Taiwan Strait, but thickens in the east of Taiwan. These results suggest that (1) the subducting Eurasian continent plate is confined to the depths above 410 km beneath Fujian and Taiwan Strait; and (2) the South China Sea slab may reach the transition zone beneath the east of Taiwan. (C) 2007 Elsevier B.V All rights reserved. |
| 关键词 | TRANSITION ZONE BENEATHSAN-ANDREAS FAULTWAVE-FORMSGEOPHYSICAL IMPLICATIONSDISCONTINUITY STRUCTURESOUTHERN CALIFORNIARECEIVER FUNCTIONSPOISSONS RATIOTAIWANDEFORMATION |
| 英文关键词 | receiver functions; crustal thickness; Poisson's ratio; slab; the upper mantle discontinuity |
| 语种 | 英语 |
| WOS研究方向 | Geochemistry & Geophysics |
| WOS类目 | Geochemistry & Geophysics |
| WOS记录号 | WOS:000249200400014 |
| 来源期刊 | EARTH AND PLANETARY SCIENCE LETTERS
 |
| 来源机构 | 中国科学院青藏高原研究所 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/257498 |
| 推荐引用方式 GB/T 7714 | Ai, Yinshuang,Chen, Qi-fu,Zeng, Fei,et al. The crust and upper mantle structure beneath southeastern China[J]. 中国科学院青藏高原研究所,2007,260(3-4). |
| APA | Ai, Yinshuang,Chen, Qi-fu,Zeng, Fei,Hong, Xing,&Ye, Wenyan.(2007).The crust and upper mantle structure beneath southeastern China.EARTH AND PLANETARY SCIENCE LETTERS,260(3-4). |
| MLA | Ai, Yinshuang,et al."The crust and upper mantle structure beneath southeastern China".EARTH AND PLANETARY SCIENCE LETTERS 260.3-4(2007). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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