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| 題名: | Crustal structures from the Wuyi-Yunkai orogen to the Taiwan orogen: The onshore-offshore wide-angle seismic experiments of the TAIGER and ATSEE projects |
| 作者: | 顏宏元;Kuo, Yao-Wen;Wang, Chien-Ying;Kuo-Chen, Hao;Jin, Xin;Cai, Hui-Teng;Lin, Jing-Yi;Wu, Francis T.;Yen, Horng-Yuan;Huang, Bor-Shouh;Liang, Wen-Tzong;Okaya, David;Brown, Larry |
| 貢獻者: | 地球科學學院地球科學學系 |
| 關鍵詞: | Cenozoic;Crustal structure;Depth profiling;Earthquakes;Evolution;Frameworks;Moho;Offshore;Offshore engineering;Offshore structures;Onshore-offshore wide-angle seismic profile;Orogeny;Paleozoic;Plate tectonics;Profiles;Ray tracing;Reflectors;Rock deformation;Seismic activity;Seismic analysis;Seismic profiles;Seismology;Straits;Taiwan orogen;Taiwan Strait;Tomography;Travel time;Wuyi-Yunkai orogen |
| 日期: | 2016-12-05 |
| 上傳時間: | 2026-04-23 11:31:20 (UTC+8) |
| 出版者: | Elsevier;Amsterdam: Elsevier B.V |
| 摘要: | 摘要： Knowledge of the crustal structure is important for understanding the tectonic framework and geological evolution of southeastern China and adjacent areas. In this study, we integrated the datasets from the TAIGER (TAiwan Integrated GEodynamic Research) and ATSEE (Across Taiwan Strait Explosion Experiment) projects to resolve onshore-offshore deep crustal seismic profiles from the Wuyi-Yunkai orogen to the Taiwan orogen in southeastern China. Three seismic profiles were resolved, and the longest profile was 850km. Unlike 2D and 3D first arrival travel-time tomography from previous studies, we used both refracted and reflected phases (Pg, Pn, PcP, and PmP) to model the crustal structures and the crustal reflectors. In total, data from 40 shots, 2 earthquakes, and approximately 1,950 stations were used; 15,612 arrivals were selected among three transects. Using these data, we determined the complex crustal evolution since the Paleozoic era , involving the closed Paleozoic rift basin in central Fujian, the Cenozoic extension due to the South China Sea opening beneath the coastline of southern Fujian, and the on-going collision of the Taiwan orogen. The shape of the Moho, which also reflects the crustal evolution, can be summarized as follows: ~30km deep to the west of Fujian, deepening toward central Fujian (~35km), becoming shallower toward the Taiwan Strait (~28km), deepening again toward the mountain belt of Taiwan (~42km), and becoming shallower toward the Pacific Ocean (~10km). •Crustal structures are imaged by active-source experiments.•We used both refracted and reflected phases to model the crustal structures.•The crustal evolution involved the closed rift basin in Fujian and Taiwan orogen.
出版者： Amsterdam: Elsevier B.V
出版日期： 2016-12-05
出處： Tectonophysics, 2016-12, Vol.692, p.164-180
資源來源： Elsevier ScienceDirect Journals Complete - Autoholdings
版權： 2015 Elsevier B.V.
版權： Copyright Elsevier BV Dec 5, 2016
識別號： ISSN: 0040-1951
識別號： EISSN: 1879-3266
識別號： DOI: 10.1016/j.tecto.2015.09.014 |
| 顯示於類別: | [地球科學學系] 期刊論文
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