Because the Peikang High is so resistant to deformation, the stress produced by crustal movement has always built up on its margins, and many earthquakes have tended to occur in this region.
台灣誕生的故事因為北港高區可以拉回到更早的地質時代。北港高地是歐亞板塊的一部份，兩千萬年前，板塊尚未碰撞，在地殼上游移不定的歐亞板塊到處惹事，一度拉扯地殼造成下陷，相對未陷落之處形成高地，露出堅硬的岩盤，就是北港高地。