台灣的地質分區中，中央山脈東翼可區分為太魯閣帶和玉里帶，早期的研究指出這兩個變質帶之間為一條東北-西南走向的壽豐斷層所分隔，為東側高壓低溫玉里帶與西側高溫低壓太魯閣帶的分界。過去文獻中，僅有在萬榮地區兩變質帶的交界發現糜嶺岩的出露、木瓜溪銅門地區疑似有斷層，及南部橫貫公路新武橋附近有逆斷層的出露，其餘地區對於壽豐斷層的確實位置、性質、分佈及詳細情形始終沒有確定。
本研究以南部橫貫公路、玉里清水溪地區及瓦拉米步道為主，主要分為三條路線沿線採樣記錄，利用影像判釋、路線地質調查、伊萊石結晶度及微視構造分析，判斷此兩不同變質帶的交界是否為剪切帶及其相關的剪切運動特性。
研究結果顯示在兩變質帶交界處發現一糜嶺岩帶，總寬度約在兩公里內，剪切帶沿南橫新武橋向北北東方延伸至清水的巴瓦薩庫及瓦拉米步道的黃麻溪谷。透過微視構造分析可以得知整體的運動模式為逆衝斷層兼具左移。

The central Range of eastern Taiwan is proposed to be divided into a high-temperature/low-pressure Tailuko belt and a high-pressure/low-temperature Yuli belt by northeastern extending Shoufeng fault. Although some previous studies mentioned that the fault is a reverse fault or shear zone and it can be recognized in Wanrung, Tongmen and Xinwu areas. However, the exact location is southern Central Range and the characteristics of the fault are still not clear yet.
In this study, the metamorphic terrain of Yuli area and Chihshang area in central Taiwan are selected to as the study area. Detailed field mapping along three profiles, the Southern Cross-Island Highway in Chihshang Area, the Chingshui region, and the Walami trail in Yuli area are performed to better understand the southern extension and the characteristics of the Shoufeng fault. Additionally, interpretation of satellite images, illite crystallinity determined by XRD and micro-structural analysis of thin section are used to help determining the location of the fault and its moving sense.
The study results showed that a mylonite shear zone with a total width of about two kilometers which separate the Tailuko belt and the Yuli belt the can be recognized at the Xinwu bridge in Southern Cross road, at Bawasaku valley in Chingshui region and at Huangma valley in Walami trail. According to the microstructure analysis, the shear zone is characterized by reverse motion with left-lateral strike slip component.

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