桃園地區南崁斷層之震測調查研究

Seismic Mapping for Nankan Fault in the Taoyuan Area

謝昭輝(Chao-Hui Hsieh) ； 孫明光(Ming-Kwan Sun) ； 謝盛雄(Sheng-Hsung Hsieh) ； 黃志文(Chi-Wen Huang)

《地工技術》 64期 (1997/12) Pp. 93-104

https://doi.org/10.30140/SG.199712.0009

摘要

本研究之目的，乃利用淺層反射震測法，調查桃園南崁地區第四紀地層及南崁斷層位置。綜合本研究之所有資料，可獲得如下數點結論：（1）南崁斷層位於南崁溪北岸，通過山腳國中處，向西北延伸，呈約北偏西25度的走向，為一高角度斷層，斷面約向東北85度傾斜，以橫移之走向滑移兼帶有逆衝斷層滑移分量。斷層兩側地層，在東北側，即林口台地方向為相對抬升；西南側，即桃園台地方向為相對降側，因斷層作用所造成之落差約20公尺。（2）南崁斷層落差量遠小於目前林口台地與桃園台地的地形高差，推測南崁斷層可能非造成此地形高差之主因。

關鍵字

第四紀地層 ； 震測法 ； 南崁斷層

並列摘要

Shallow seismic reflection is used to map the surface location of the Nankan fault in the Taoyuan-Nankan area. Based on the Seismic profiles of field survey, it can be concluded that:1. The Nankan fault is a thrust fault located at the northern shore of Nankan His, which extends from the Sanchiao Junior High School toward the north-west. The strike of the fault is about N25°W with a very large dip angle of about 85°NE. The fault is a strike-slip fault but with a dip-slip component. The stratum in the northeast side of the fault toward the Linkou Terrace is uplifted ,while the stratum in the southwest side of the fault directed to Taoyuan Terrace is dropped down. The vertical displacement of the Nankan fault is about 20 meters.2. The vertical displacement of the Nankan fault is very smaller than the difference in height between the LinKou Terrace and the Taoyuan Terrace. It implies that the Nankan fault is not the main factor to cause the height difference of the two terraces.

並列關鍵字

quarternary sediments ； nankan fault ； seismic survey