weathered rock in a sentence

Examples

1. The twin 300-pound rovers, scheduled to land on Mars within three weeks of each other in January 2004, will each carry two cameras, five instruments and a " abrasion tool " designed to scrape away weathered rock surfaces and reveal the chemical composition of the ancient rocks, officials said Thursday.
2. Reviewers McClay and Roger Ebert have noted that the monolith is the main element of mystery in the film, Ebert writing of " The shock of the monolith's straight edges and square corners among the weathered rocks ", and describing the apes warily circling it as prefiguring man reaching " for the stars ".