강릉 ~ 묵호해안 최종간빙기 해성면의 동정과 발달과정 = Last Interglacial Marine Geomorphic Surfaces between Gangneung to Muckho in Mid-eastern Coast of Korean Peninsula

다국어 초록 (Multilingual Abstract)

Considering the connection of lower marine geomorphic surfaces with the Last Interglacial thalassostatic terrace. the weathering degree of terrace deposits, the paleosol and the fossil cryogenic structures, the Last Interglacial marine geomorphic surfaces on the coastal area between Gangneung to Muckho in mid-eastern coast of Korean peninsula were identified, and the high sea levels in those age were reviewed. Based on the above data. the forming process of marine terrace of the late Pleistocene were examined. The ancient shoreline altitudes of the lower marine terrace I /II surfaces are at one on the extension line of longitudinal profiles of the thalassostatic terrace I /II surfaces. and the former shoreline altitude of the lower marine terraces is in accord with the relative heights of the thalassostatic terraces above the present river floor. Together with these facts, the weathering degree of deposits. the fossil pseudogleyed red soil and the fossil periglacial cryogenic structures of both the lower marine and thalassostatic terraces are mutually corresponded. Thus it is assumed that both the terraces had been formed at the similar periods and environments. Lower marine terrace I surface of ancient sea level with ±18 meters had been formed in the transgression period of the Last Interglacial culmination stage(Oxygen Isotope Stage 5e). and was terraced in the following small regression stage(5d or 5b). Lower marine terrace II surface of ancient sea level with ± 10 meters had been formed in the following relative warmer transgression period(5c or 5a), and was terraced in the Last Glacial regression period(4-2). Seen from the point of scale of 10⁴ years, the lower marine geomorphic surfaces and the lower thalassostatic terraces of the study area are seemed to have been formed in the similar land forming environments and developmental processes.