The SNC meteorites: basaltic igneous processes on Mars
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منابع مشابه
Fractionation among Large-ion Lithophile Elements during the Differentiation of Mars: Implications for the Composition of the Martian
Introduction: The ratios between moderately volatile large ion lithophile (LIL) elements, such as K and Rb, and refractory LIL elements, such as Th, U, and the LREE are very important constraints on models for the origin and chemical composition of the primitive mantles of planets [e.g., Ref. 1]. Ratios among these highly incompatible elements are generally thought to change little during magma...
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Introduction: Approximately 40 unpaired meteorites are acknowledged as samples derived from Mars. The total mass of these samples exceeds 84 kg. All of them have an igneous origin and formed by the crystal-lization of basaltic magmas on or near the martian surface. With such a large mass in hand, why is it critical to return an additional 0.5 to 1.0 kg of material from Mars? Here we focus upon:...
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Evaporite deposits may represent significant sinks of mobile cations (e.g., those of Ca, N, Mg, and Fe) and anions (e.g., those of C, N, S, and Cl) among the materials composing the Martian surface and upper crust. Carbon and nitrogen are especially interesting because of their role as atmospheric gases which can become incorporated into crustal rocks. However, the nature of evaporite precursor...
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تاریخ انتشار 2004