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Mars Crust: Made of Basalt

Mars Crust: Made of Basalt. Compositions from Mars meteorites, rovers, and orbiters reveal that Mars is dominated by basaltic rock TES data indicate that most of the surface has been weathered. Mars Crust: Made of Basalt.

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Mars Crust: Made of Basalt

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  1. Mars Crust: Made of Basalt • Compositions from Mars meteorites, rovers, and orbiters reveal that Mars is dominated by basaltic rock • TES data indicate that most of the surface has been weathered

  2. Mars Crust: Made of Basalt • Compositional variations are more like those of terrestrial tholeiites than calc-alkaline rocks (which form by partial melting of hydrous mantle) Mars basalts might resemble this typical terrestrial tholeiite from Hawaii

  3. Mars Crust: Made of Basalt • Martian meteorites plot along a separate trend than do basalts on Earth • This was taken as a distinctive feature of Martian basalts • But complete data indicate that most of the Martian surface is more like the Earth on this diagram

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