https://scholars.lib.ntu.edu.tw/handle/123456789/45278
Title: | 海洋鑽探計畫─(子計畫五)台灣東部海域地殼構造的地球物理研究 | Authors: | 劉家瑄 | Keywords: | Digital bathymetric data;Ryukyu subduction - Taiwan collision system;Forearc basin structure;Huatung Basin | Issue Date: | 1999 | Publisher: | 臺北市:國立臺灣大學海洋研究所 | Abstract: | This research project investigates the crustal structures and tectonic features in the area offshore eastern Taiwan for the purposes of providing basic geological and tectonic framework for the Taiwan ocean drilling proposal, as well as to provide observational constraints on the geometry of the plate boundary between the Philippine Sea and Eurasia plates along the Taiwan subduction-collision zone. This report summarizes the results of the 2nd year study. During this year, main efforts were devoted on compiling and analyzing the geophysical data (especially the bathymetry and seismic reflection data) acquired previously, and scientific results on four different topics have been presented. A 500-m gridded digital bathymetric data set has been compiled that reveals details of the seafloor topography around Taiwan. The relationships between the bathymetric features and their tectonic implications have been discussed. For the study offshore eastern Taiwan, two papers have been published. One 2 discusses the kinematic movements of the southern Ryukyu Arc relative to Taiwan, and presents their geodynamic implications; the other paper reveals trench-parallel stretching and folding of the Ryukyu forearc basins due to oblique convergence of the plate motion. The last paper focused on the deformation of the Philippine Sea plate in the Taiwan collision zone, and proposes two possible mechanisms to accommodate the *subduction on one side and collision on the other side* geometry of the Philippine Sea plate. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/29299 | Other Identifiers: | 882611M002024ODP | Rights: | 國立臺灣大學海洋研究所 |
Appears in Collections: | 海洋研究所 |
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882611M002024ODP.pdf | 33.42 kB | Adobe PDF | View/Open |
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