A deep crust-mantle boundary in the asteroid 4 Vesta

被引：56

作者：

Clenet, Harold ^{[1
]}

Jutzi, Martin ^{[2
]}

Barrat, Jean-Alix ^{[3
]}

Asphaug, Erik I. ^{[4
]}

Benz, Willy ^{[2
]}

Gillet, Philippe ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Inst Condensed Matter Phys, EPSL, Stn 3, CH-1015 Lausanne, Switzerland

[2] Univ Bern, Inst Phys, Ctr Space & Habitabil, CH-3012 Bern, Switzerland

[3] Univ Bretagne Occidentale, Inst Univ Europeen Mer, CNRS, UMR 6538, F-29280 Plouzane, France

[4] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA

来源：

NATURE | 2014年 / 511卷 / 7509期

基金：

瑞士国家科学基金会;

关键词：

MODIFIED GAUSSIAN MODEL; PARENT BODY; PYROXENE MIXTURES; HED METEORITES; MAGMA OCEAN; OLIVINE; DIOGENITES; DAWN; REFLECTANCE; SPECTROSCOPY;

D O I：

10.1038/nature13499

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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.

引用

页码：303 / +

页数：7

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