In the course of Taroko's upward movement, intensive mountain-forming activity was churning up the soil underneath the surface. Sedimentary layers beneath the surface were continually pushed upward, compressed, and twisted by tectonic activity, and then were folded back under the surface. The high temperatures and pressure associated with such tectonic activity tempered the sedimentary rock into metamorphic rock.
在太魯閣破殼而出中，劇烈的造山運動將地底土壤翻滾攪動，地底下的沈積岩層受到地殼不斷拱起、壓縮、彎曲，再埋回地底經歷高溫高壓鍛造、變質，如此上下往覆，最終被淬練成堅硬的變質岩。