DETECTING SHUANG-LIEN-PO FAULT AND ITS NEIGHBORING STRUCTURES USING SHALLOW SEISMIC REFLECTION METHOD
| Autor: | CHIU, JIN-DAR, 邱俊達 |
|---|---|
| Rok vydání: | 1998 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 86 Shuang-Lien-Po fault is located on the Tao-Yuan Terrace, just along the northern border of the Ping-Chen anticline. Since the fault transverses several terrace surfaces including the Yang-Mei surface, the Ta-Lun surface, and the Chung-Li surface, it is considered quite young. The purpose of this study is to detect the Shuang-Lien-Po fault and the structures in its vicinity using the shallow seismic reflection method. The results are also directed to understand the tectonic movement which could cause the generation of this structure. Seven long-range seismic lines are taken to cover the fault traces. The obtained seismic profiles come out remarkably good, which have identifiable seismic images even down to the depth of 600 meter. It is surprising to find that all structural layers are very smooth, not exist a single track of structural offset. The layers are bent to turn upward, but not broken, at the suspected places of Shuang-Lien-Po fault. These seismic profiles definitely deny the existence of this fault. In addition to the fault detection, we also used eleven short-range seismic lines arranged from the coast to the southern border of Ping-Chen anticline to investigate the background tectonic reasoning which creates the structure near the fault. After carefully reserving the characteristics of each layer reflector, we are able to correlate different layers on different seismic profiles and obtain a gross picture of structural variation along a north- south profile. Due to the blockage of Kuan-Yin Basement High outside the northern coast, the layers are uplifted in the north and decline gently toward the south. However, after passing the Shuang-Lien-Po fault, the layers start to incline up and form the Ping-Chen anticline. The place where the Shuang-Lien-Po fault is situated is actually not a fault, but a depression looked like a syncline. This study suggests to modify the name of Shuang-Lien-Po fault to Shuang-Lien-Po syncline. (Keywords: Shuang-Lien-Po fault, Taoyuan terrace, seismic reflection) |
| Databáze: | Networked Digital Library of Theses & Dissertations |
| Externí odkaz: |
|