2005•Max Planck Institute for Plasma PhysicsRequires access

Subsurface weathering of rocks and soils at Gusev crater

A. S. Yen, D. W. Ming, R. Gellert, B. C. Clark, R. V. Morris, D. Rodionov, Christian A. Schröder, G. Klingelhöfer

Abstract

Data collected by the Mars Exploration Rover (MER) Spirit at Gusev Crater suggest that enhanced weathering of rocks and soils occurs beneath the immediate surface. We suggest that this alteration occurs over geological timescales under present climatic conditions and is a result of diurnal condensation of thin-films of water on subsurface materials. Additional information is included in the original extended abstract.

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Key concepts: Weathering, Impact crater, Geology, Soil water, Geochemistry, Mars Exploration Program, Earth science, Astrobiology