| A view from a moving vehicle while traveling northbound along Highway 14 through Red Rock Canyon State Park, California. Here, a resistant black volcanic basalt flow caps stratified sedimentary rocks: reddish layers are channel sandstones depositled in the channels of streams and rivers; the narrow whitish bands are tuffaceous sandstones that were subjected to volcanic ash airfalls; greenish-gray layers are sandstones that were deposited along great floodplains. The entire exposure lies within the late Miocene Dove Spring Formation of the Ricardo Group. |