Parameter Tree:
EARTH SCIENCE > SOLID EARTH > TECTONICS > PLATE TECTONICS > PLATE BOUNDARIES

Definition:
Zones of seismic and tectonic activity along the edges of
lithosphere plates, presumed to indicate relative motion between plates.


Reference:
Jackson, J.A.(1997) Glossary of Geology. 4th ed. Alexandria, VA:American
Geological Institute.769 p.