The Geophysical Evidences of New Taiwan Orogeny

• Main Authors: Li Cheng Shien, 李政憲
• Other Authors: Sun Robert
• Format: Others
• Language: zh-TW
• Published: 2000
• Online Access: http://ndltd.ncl.edu.tw/handle/90759868448938203633

碩士 === 國立成功大學 === 地球科學系 === 88 === This research is to use two-domensional high-resolution shallow seismic reflection exploration, in combination with the results from chronology studies, to investigate the shallow underground evidence of the New Taiwan Orogeny in the southwestern coastal Taiwan. Field survey is conducted in the Yichu area in Chayi County and Nankunshen area in Tainan County. The survey lines spread in an area covers of about 12 kms east-west span and about 14 kms north-south span. The total length of the survey lines is about 7 kms. Two deformation belts with roughly north-south strikes were found, one is located at Nankunshen, the other is located at Yichu. They are about 5 kms apart, resulting from the New Taiwan Orogeny but are independent to each other. The Nankunshen deformation belt might be a northward extension of the previous found Sanliowan fault(Sun et al., 1998). According to carbon 14 dating data, the age of New Taiwan Orogey can be traced to 10ky ago.