Definition:
Organic weathering, also called bioweathering or biological weathering, is the general name for biological processes of weathering that break down rocks. These include the physical penetration and growth of roots and digging activities of animals (bioturbation), as well as the action of various acids on minerals by lichens. Organic weathering is an intimate mixture of mechanical weathering and chemical weathering agents.
See examples in the Organic Weathering Gallery.
Also Known As: Biological weathering, bioweathering
