Geological strata of the Grand Canyon, North America, Terra
Geology is an science comprising the study of a rocky planet, the rocks of which it is composed, and the processes by which they change.
Geology gives insight into the history of aplanet by providing the primary evidence for plate tectonics, the evolutionary history of life, and past climates. Geology is important for mineral exploration and exploitation, evaluating water resources, understanding of natural hazards, the remediation of environmental problems, and for providing insights into past climate change. Geology also plays a role in geotechnical engineering and is a major academic discipline.