Neotectonics study in the ilan plain area

• Main Authors: Chu-Chun Kang, 康竹君
• Other Authors: Chao-Shing Lee
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/74981928588630806119

碩士 === 國立臺灣海洋大學 === 應用地球科學研究所 === 95 === This research integrates the records of the iso-depth of basement, geomagnetic evidence and earthquake statistics in order to infer that the extension of southwestern Okinawa Trough acts westbound on the north of Ilan plain and thus affects its basin tectonic evolution. According to the earthquake observation over the past decades, two important activities has been discovered— the convergence/collision of Philippine Sea Plate in southern Ilan plain and the clockwise rotation of the deformation of the blocks. Such deformation kinematics occurs mostly in southern Ilan plain and several vital left-faults near Central Range. Our purpose of this paper is to find out how is the Ilan Plain deforming at present? And what kinds of the Neotectonic process are carrying out in the Ilan Plain? For that, we used the RTK-GPS with high resolution to measurement the Ilan Plain and aim to observation some neotectonic structure. By studying and analyzing all the data and statistics, the model of different evolution kinematics for the south and north of Ilan plain is proposed—the north is by the influence of extension stress, as referred to the extension of Okinawa Trough, while the south is the mechanic of strike-slip stress, as referred to rotation of the blocks.