Geology of the Grand Canyon

The geology of the Grand Canyon reveals a record of Earth's history spanning over a billion years. The canyon exposes layers of rock formed from ancient seas, volcanic activity, and sediment deposits, with some rocks dating back to the Precambrian era. Erosion by the Colorado River over millions of years carved the dramatic depths and steep cliffs. These geological layers tell stories of changing environments, tectonic shifts, and climate variations, making the canyon a natural timeline of Earth's geological processes. The exposed strata are among the most detailed and well-preserved in the world, offering invaluable insights into Earth's history.