Mineralogical and Geochemical Characteristics of Soils of Barton Peninsula, King George Island, South Shetland Islands, West Antarctica

서남극 사우스셰틀랜드 킹조지섬 바톤반도 육상 토양의 광물학적, 지화학적 특성

  • Jung, Jaewoo (Department of Earth System Sciences, Yonsei University) ;
  • Koo, Taehee (Department of Earth System Sciences, Yonsei University) ;
  • Yang, Kiho (Department of Earth System Sciences, Yonsei University) ;
  • Kim, Jinwook (Department of Earth System Sciences, Yonsei University)
  • 정재우 (연세대학교 지구시스템과학과) ;
  • 구태희 (연세대학교 지구시스템과학과) ;
  • 양기호 (연세대학교 지구시스템과학과) ;
  • 김진욱 (연세대학교 지구시스템과학과)
  • Received : 2017.03.02
  • Accepted : 2017.03.23
  • Published : 2017.03.31


Surface soils on Barton Peninsula, King George Island, West Antarctica were investigated to acquire the mineralogical and geochemical data of soil in Antarctica. Multiline of techniques for example, X-ray diffraction (XRD), transmission electron microscopy (TEM)-electron energy loss spectroscopy (EELS), and wet chemistry analysis were performed to measure the composition of clay minerals, Fe-oxidation states, cation exchange capacity, and total cation concentration. Various minerals in sediments such as smectite, illite, chlorite, kaolinite, quartz and plagioclase were identified by XRD. Fe-oxidation states of bulk soils showed 20-40% of Fe(II) which would be ascribed to the reduction of Fe in clays as well as Fe-bearing minerals. Moreover, redox states of Fe in smectite structure was a ~57% of Fe(III) consistent to the values for the bulk soils. The cation exchange capacity of bulk soils ranged from 100 to 300 meq/kg and differences were not significantly measured for the sampling locations. Total cations (Mg, K, Na, Al, Fe) of bulk soils varies, contrast to the heavy metals (Co, Ni, Cu, Zn, Mn). These results suggested that composition of bed rocks influenced the distribution of elements in soil environments and soils containing clay compositions may went through the bio/geochemical alteration.


Grant : 서남극 빙붕 변화 관측 시스템 구축 및 제4기 해빙사(deglaciation history)복원기술 개발

Supported by : 극지연구소


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