Publication Date:
1998-09-22
Description:
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.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bertka, C M -- Fei, Y -- New York, N.Y. -- Science. 1998 Sep 18;281(5384):1838-40.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Geophysical Laboratory and the Center for High Pressure Research, Carnegie Institution of Washington, 5251 Broad Branch Road NW, Washington, DC 20015, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9743493" target="_blank"〉PubMed〈/a〉
Keywords:
Carbon
;
*Evolution, Planetary
;
Extraterrestrial Environment
;
Hydrogen
;
Iron
;
*Mars
;
*Meteoroids
;
Pressure
;
Silicon
;
Temperature
;
Water
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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