Original sentence: On the other hand, the Pohang Basin areas are stratification that formed in the Tertiary period of the Cenozoic era, which consist of igneous rock, aqueous rock, porphyry, sandstone, and tuff
Edited sentence: On the other hand, the Pohang Basin areas are comprised of stratum that formed in the Tertiary period of the Cenozoic era, which consist of igneous rock, aqueous rock, porphyry, sandstone, and tuff