| A view roughly westward along Highway 14 in Red Rock Canyon State Park, California. Colorful banded sedimentary rocks at left and at center belong to the late Miocene Dove Spring Formation of the Ricardo Group, roughly 10 million years old; the prominent red bands are channel sandstones, deposited in ancient stream and river channels; the whitish bands represent tuffaceous sandstones, sedimentary material that was subjected to volcanic contaminants; the grayish bands are beds of sandstone that were deposited along great floodplains. At upper right, the brownish-tan rocks are resistant volcanic tuff breccia. |