지형 자원 활용을 위한 지형 분류도 작성 연구 -교암 도폭을 사례로- = A study on geomorphological mapping for the use of landform resources -A case of Gyoam-

다국어 초록 (Multilingual Abstract)

Geomorphic characteristics of the coastal area from Gajin to Ayajin are analyzed, in this study. Coastal tors and other residual forms of weathering front found from the coast and it is the influence of bedrock, granite. It can be assumed that landscape evolution in this area is dominated by the removal of weathered materials rather than direct erosion of bedrock(like plucking). Coastal rock hills were island separated from the land when sea level reached current level or higher, they are connected with the land by sandbar afterwards. Weathering pits or pans like tafoni are also be found and spatial distribution of it controled by lithology, especially by the lithologic structures. Some of it, found from the sidewall of inland rocky hills, was fossilized as the coastline progressed to the sea. Remains of aeolian sand dune also formed behind the sand beach. About 10m high coastal terraced forms with deeply weathered saprolite also found from some area. Further studies to find the forming process and age of the terraces should be done. Basalts can be found from Oeum Mt. and Unbong Mt. area. The peaks of the mountains formed by the volcanic activities in tertiary period and have some typical landforms like columnar joints. At the footslope formed with granite showing the tor or other weathered material. Some part of it covered by the block stream originated from the area of basalt. Based on the field studies, geomorphological map of part of this area(Gyoam, 1:25000) is drawn. For the mapping, the area was classified as volcanic, weathering, coastal deposition, aeolian deposition, lacustrine deposition and colluvial by dominant geomorphic processes. Some area was not classified and left as ‘unidentified’.