Further information: Plate tectonics

Global earthquake epicenters, 1963–1998

Global plate tectonic movement

Tectonics is the study of the earth's structural features, especially the folding and faulting (cracking) of the Earth's crust.

Tectonics (from Latin, meaning "building") is a field within geology. It includes structures in the lithosphere of the Earth and the forces and movements that have operated to create these structures.

Tectonics is concerned with orogenies (mountain building) and major land features. This includes the earthquake and volcanic regions which affect certain parts of the world. This is discussed further in plate tectonics.