A Study on Mountain Stream Type Deposit at Suhang Valley in Odaecheon (오대천 수항 계곡의 산지 하천성 퇴적층 특성에 대한 연구)

Kim, Jong-yeon (김종연); Sangheon Yi (이상헌); Jong Wook Kim (김종욱)

A Study on Mountain Stream Type Deposit at Suhang Valley in Odaecheon

Journal of the Association of Korean Geographers
Abbr : JAKG
2012, 1(1), pp.75-90
Publisher : Association of Korean Geographers
Research Area : Social Science > Geography

Kim, Jong-yeon ¹, Sangheon Yi ², Jong Wook Kim ³

¹충북대학교
²한국지질자원연구원
³서울대학교

ABSTRACT

The sediment particles found from depositional landforms at Suhangri, Hajinbu, Gangwon province were analyzed in this study. The samples were collected from the depositional forms located near of Odaecheon. Odaecheon is deeply dissecting the paleozoic sedimentary rocks (mainly sandstone) and formed fluvial terraces along its course. The sediment particles of depositional landforms showed different origin and transport route. The lower terraces near of current channel are formed with well rounded granite gravels while higher depositional forms at the foot of the slope are formed with sub angular - sub rounded sandstone gravels with clay matrix. In addition, the thickness of the landforms found less than 10m. So it should be pointed that overall feature of the landform is not decided by the depositional processes of stream but the surface feature formed by erosional processes. It is also found from the slope of the mountain that the gullies on the slope are the main erosional and depositional agents. The sediment particles formed by mechanical weathering or deposited by other processes are transported through the gully. The particles found from the bottom of the gully showed similar roundness and lithology with depositional forms at footslope. It means that sediment particles at the area transported from upslope by the gullying rather than upstream by the fluvial processes. So, it should be mentioned that the depositional forms at this area have different sediment link with slope or upstream reaches, though relative height form the channel is similar.

KEYWORDS

Fluvial terrace, Mountain stream, Shape of sediment, Sediment link

Citation status

* References for papers published after 2023 are currently being built.

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