A Rock Named Chester Lake (IMAGE)

Washington University in St. Louis

A Rock Named Chester Lake

Caption

This is a Pancam false color mosaic of the rock target Chester Lake, acquired on sol 2709 (the 2,709th day of Opportunity’s mission). This rock, located on Cape York, on the edge of the Endeavour crater, is a breccia in which various rock fragments have been cemented together in a finer-grained matrix, probably during formation of the Endeavour crater billions of years ago. Opportunity is about to make in-situ measurements of this rock which will determine whether it contains clay minerals formed in the presence of water.

Credit

NASA

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