The term “denudation” was introduced into the earth sciences in the early nineteenth century to refer to the removal of surface material that leads to the exposure of underlying strata and rock units. Now, denudation refers to all the weathering and erosional processes that contribute to the lowering of the land surface, potentially to the production of a peneplain as the product of a long period of erosion. Denudation is, thus, the complement of deposition, the accumulation of the products of denudation in sedimentation basins.