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소행성 베스타의 지각-맨틀 경계면에 대한 분석 결과를 얻은 던 우주탐사선

A deep crust-mantle boundary in the asteroid 4 Vesta
  • 작성자 : KASI
  • 작성일 : 2014-07-25
  • 조회수 : 3444
  • 저자Harold Clenet, Martin Jutzi, Jean-Alix Barrat, Erik I. Asphaug, Willy Benz & Philippe Gillet
  • Absract

      

    The asteroid 4 Vesta was recently found to have two large impact craters near its south pole, exposing subsurface material. Modelling suggested that surface material in the northern hemisphere of Vesta came from a depth of about 20 kilometres, whereas the exposed southern material comes from a depth of 60 to 100 kilometres. Large amounts of olivine from the mantle were not seen, suggesting that the outer 100 kilometres or so is mainly igneous crust. Here we analyse the data on Vesta and conclude that the crust?mantle boundary (or Moho) is deeper than 80 kilometres. 


  • 게재정보Nature(2014. 07. 17.)에 실린 연구논문을 게시함
  • 첨부파일
  • 원 문http://www.nature.com/nature/journal/v511/n7509/full/nature13499.html
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