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Characteristics of Geomorphological Surface and Analysis of Deposits in Fluvial Terraces at Upper Reach of Soyang River  

이광률 (경희대학교 이과대학 지리학과)
Publication Information
Journal of the Korean Geographical Society / v.39, no.1, 2004 , pp. 27-44 More about this Journal
Abstract
Upper reach of Soyang River at the northernmost area around Taebaek Mountains in South korea is profitable area to understand paleo-environment during the Quaternary such as tectonic process and climate change in the Korean Peninsula. This study explained paleo-environment affect to channel development by geomorphic distribution and characteristics of terrace surfaces, and analysis of deposits at 58 fluvial terraces in upper reach of Soyang River. Fluvial terraces were classified from T1 to T6. Most terraces are distributed on the point bar in meandering channel and one side along river valley. Terraces tend to decrease in number and superficial dissection rate to be higher and channel slope to be steeper if it takes long time from T1 to 6. The paleo-channel of Soyang River is supposed to be stronger meandering in period of T2 than T3. The weathering rind of gravel is generally thicker in older terrace, however, differs by contents of water and air in deposits. Based on the data of stratigraphy, grain size analysis, pollen analysis and rubification index in deposit, formation age of T5 terrace in Soyang River are estimated in MIS(Marine Oxygen Isotope Stage) 10, and T2 terrace are estimated in MIS 6.
Keywords
fluvial terrace; thickness of weathering rind; rubification index; paleo-channel pattern; pollen analysis;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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