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In this image (right) of the Martian surface taken by the Imager for Mars Pathfinder, the colors have been exaggerated to help show differences among the rocks and soils. It is clear from the image that there are three different types of rocks. The white arrows point to flat white rocks of unknown age. The red arrows point to large rounded rocks that show weathering on their surfaces, and so have probably been at the site for some time. The blue arrows point to smaller, angular rocks. These rocks have not been weathered, and so are thought to have been deposited or placed at this site recently, possibly by an asteroid impact. |
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