Soft, thoroughly decomposed rock rich in clay and remaining in its original place.
(geol.) Completely decomposed rock lying in its original site.
Soft, thoroughly decomposed and porous rock, often rich in clay, formed by the in-place chemical weathering of igneous, metamorphic, or sedimentary rocks. Saprolite is especially common in humid and tropical climates. It is usually reddish brown or grayish white and contains those structures (such as cross-stratification) that were present in the original rock from which it formed.