Implications of Mars Pathfinder data for the accretion history of the terrestrial planets

被引：57

作者：

Bertka, CM

Fei, YW

机构：

[1] Carnegie Inst Washington, Geophys Lab, Washington, DC 20015 USA

[2] Carnegie Inst Washington, Ctr High Pressure Res, Washington, DC 20015 USA

来源：

SCIENCE | 1998年 / 281卷 / 5384期

关键词：

D O I：

10.1126/science.281.5384.1838

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：

Accretion models of the terrestrial planets often assume planetary bulk compositions with nonvolatile element abundance ratios equivalent to those of C1 carbonaceous chondrites. The moment of inertia factor of Mars reported by the Pathfinder team is inconsistent with a bulk planet C1 Fe/Si ratio or Fe content, which suggests that C1 chondrite accretion models are insufficient to explain the formation of Mars and the other terrestrial planets. Future planetary accretion models will have to account for variations in bulk Fe/Si ratios among the terrestrial planets.

引用

页码：1838 / 1840

页数：3

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