Geologic studies in the park began with the work of John Strong Newberry in 1858, and continue today.
a group of hikers descending a backcountry trail with a massive wall of multi-colored cliffs in the background.
Hikers descending South Kaibab Trail
NPS/M.Quinn
Grand Canyon’s excellent display of layered rock is invaluable in unraveling the region’s geologic history. Extensive carving of the plateaus allows for the detailed study of the Earth's movements. Processes of stream erosion and vulcanism are also easily seen and studied.
The Colorado River has carved the Grand Canyon into four plateaus of the Colorado Plateau Province. The Province is a large area in the Southwest characterized by nearly-horizontal sedimentary rocks lifted 5,000 to 13,000 feet above sea level.
