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Rock groups at play in Perseverance

Rock groups at play in Perseverance
Rock groups at play in Perseverance An important and useful result of Bouchard’s innovative multi-prong statistical grouping model is that the rocks Opportunity has studied at nine sites with the APXS/MI science protocol can be grouped, based on composition and texture similarities, into four lithochemical groupings: 1) Perseverance Valley Floor material, classic rubbly floor material of the valley; 2) “Shoemaker like” cobbles, rubble that has composition similar but not exactly like the Shoemaker Formation; 3) Blue Cobbles/Outcrops; and 4) Nueva Vizcaya type outcrop. M. Bouchard / Washington University St. Louis