Constraining Composition of Mars Using Geophysical Constraints and Mineral
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چکیده
Introduction: Compositions of the mantle and core of the terrestrial planets are important for us to understand the formation and evolution of the planets. There are two hypotheses on the evolution of the planets. One hypothesis suggests that the different mean densities of the terrestrial planets indicate different Fe/Si ratio in the planets. Because the terrestrial planets have different distance from the Sun, different mean density of the planets suggests a Fe/Si fractionation in the solar nebula [1, 2]. The other hypothesis suggests that the terrestrial planets all have the bulk composition with the same nonvolatile element abundances as those of C1 carbonaceous chondrite [3]. Later, this hypothesis is revised to that the terrestrial planets consist of two chondritic components, one is completely reduced and the other is oxidized, but both components have the same bulk composition of C1 chondrite [4]. Based on this hypothesis, the terrestrial planets have the same Fe/Si ratio, but the ratios between metallic Fe and the total Fe are different. Understanding the composition of terrestrial planets can help us distinguish these two hypotheses.
منابع مشابه
Composition of Mars constrained using geophysical observations and mineral physics modeling
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تاریخ انتشار 2009