A deep crust–mantle boundary in the asteroid 4 Vesta | Zendy

H. Clénet | Zendy; Martin Jutzi | Zendy; JeanAlix Barrat | Zendy; Erik Asphaug | Zendy; W. Benz | Zendy; Philippe Gillet | Zendy

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A deep crust–mantle boundary in the asteroid 4 Vesta

Author(s) -

H. Clénet,

Martin Jutzi,

JeanAlix Barrat,

Erik Asphaug,

W. Benz,

Philippe Gillet

Publication year - 2014

Publication title -

nature

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 15.993

H-Index - 1226

eISSN - 1476-4687

pISSN - 0028-0836

DOI - 10.1038/nature13499

Subject(s) - geology , crust , mantle (geology) , impact crater , asteroid , igneous rock , astrobiology , geophysics , geochemistry , physics

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.

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