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Fig. 1 Geological map of the study and surrounding areas. These areas are composed of volcanic and sedimentary rocks (Yucheon Group) intruded by granotoids (Fm.: Formation, An: Andesite). All data presented in this map are from Kim and Hwang (1988) and Hong and Choi (1988) with minor modifications. Stratigraphic scheme follows that of Hwang et al. (2019).
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