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A Study on the Characteristic of Sediment Particles of Glacial Period in the Suip river, Yanggu

  • Journal of the Association of Korean Geographers
  • Abbr : JAKG
  • 2014, 3(1), pp.53-66
  • Publisher : Association of Korean Geographers
  • Research Area : Social Science > Geography

Kim, Jong-yeon 1 신원정 2

1충북대학교
2서울대학교 사범대학 지리교육과

ABSTRACT

There are some previous studies on the sedimentary deposits of glacial period in Korea. Most of these deposits are identified as loess or loess like aeolian deposits based on physical characteristics, while chemical composition of these deposits caused debate on the origins and the natures. The characteristics of the fluvial terrace deposits found from Suip river, Bangsan, Yanggu-gun, Gangwon-do which the burial age of its particles belong to MIS 6, are analyzed using granulometric studies and geochemical analysis in this study. The result from XRF used to find chemical composition and weathering related indices, while XRD results are used to identify the rock foorming minerals and clay minerals. The color of the deposits showed similarity with previously reported loess lays, however these are coarser and far poorly sorted than the loess. These deposits are located at illite zone by the chemical composition and some layer affected by the post-depositional disturbance caused by additional supply of unweathered material. The quartz peaks are dominant for all samples. For the clay minerals, illite peaks are stronger than those of kaolin. It must be the effect of climatic characteristics ever since the deposition event of the area. The strong feldsapr peaks are also found and it could be the result of postdepositional disturbances.

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