The Chinkuashih area has a unique, long, and complex history of geological activity. Tahan College associate professor Yu Ping-sheng, who has extensively studied the local geology, tells us that the sedimentary rock which forms the area accumulated on the ocean floor 25 million years ago.
金瓜石地區有個獨特、漫長而複雜的地質活動過程，研究金瓜石地質的大漢技術學院資源工程系副教授余炳盛解釋，九份與金瓜石的沈積岩主要由二千五百萬年前的海底堆積形成，其間歷經板塊運動、再經過沖繩海槽張裂作用，形成一系列火山。