俞何興2006-07-252018-06-282006-07-252018-06-282003http://ntur.lib.ntu.edu.tw//handle/246246/14831本計畫使用海研一號654 航次之反射震測資料結合陸上地質資訊，討論南海北部板塊邊界表面跡之特徵及分佈。Marine seismic reflection profiles offshore SW Taiwan combined onland geological data are used to investigate distribution and nature of the deformation front west of Taiwan. Locations of the fronatal structure west of Taiwan are generally connected into a continuous line, although the alignment of frontal structures is offset by strike-slip faults. The deformation front begins from the northern Manila Trench near 21 N and continues northward along the course of the Penghu Submarine Canyon in a nearly N-S direction north of 21 N until reaches around 22 15 N at the upper reach of the Penghu Canyon. The deformation front then changes its directions sharly to northeast. It connects to the Chungchou anticline or the Tainan anticline in the coastal plain and continues northwards along the outer Western Foothills to the northern coast of Taiwan near 25 N. Characteristics of structural style, strain regime, sedimentation and tectonics vary along the trend of the deformation front. Ramp anticline, diapiric intrusion and incipient thrust fault are commonly associated with the deformation front. Variations of structural style along strike of the deformation can be related to different stages of oblique collision in Taiwan. The collision front west of 2 Taiwan can be considered as a boundary of strain regime separating contraction in the Taiwan orogen and extension west of the collision zone. The deformation front east of the Tainan Basin and its northward extension along the outer limit of the Western Foothills is the surface trace separating the foreland thrust belt from the nearby foredeep, not a boundary between the Chinese and Taiwan margins. The submarine deformation front off SW Taiwan is the surface trace separating the submerged Taiwan orogenic wedge from the Chinese passive continental margin, not a surface trace of plate boundary between the Eurasian and the Philippine Sea plates.application/pdf104393 bytesapplication/pdfzh-TW國立臺灣大學海洋研究所變形前緣分佈特徵震測台灣Deformation FrontDistributionNatureSeismicsTaiwan[SDGs]SDG14reporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/14831/1/912611M002018.pdf