Silica Retention and Enrichment in Open-system Chemical Weathering on Mars
نویسندگان
چکیده
Spirit: The Spirit rover at Gusev Crater traversed across 7.7 km over an operating lifetime of 2210 sols and analyzed with its APXS approximately 225 distinct targets. Fig. 1 depicts Mg/Si versus Al/Si for all the Gusev samples. A circular reference zone is plotted to represent an approximate average Mars crustal composition and the dashed lines bound the expected values for unaltered martian igneous rocks.
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