In soil science, parent material is the underlying geological material (generally bedrock or a superficial or drift deposit) in which soil horizons form. Soils typically inherit a great deal of structure and minerals from their parent material, and, as such, are often classified based upon their contents of consolidated or unconsolidated mineral material that has undergone some degree of physical or chemical weathering and the mode by which the materials were most recently transported.
Read more about Parent Material: Consolidated, Unconsolidated, Climate and Weathering
Famous quotes containing the words parent and/or material:
“A parent who from his own childhood experience is convinced of the value of fairy tales will have no difficulty in answering his childs questions; but an adult who thinks these tales are only a bunch of lies had better not try telling them; he wont be able to related them in a way which would enrich the childs life.”
—Bruno Bettelheim (20th century)
“This is no war for domination or imperial aggrandisement or material gain.... It is a war ... to establish, on impregnable rocks, the rights of the individual and it is a war to establish and revive the stature of man.”
—Winston Churchill (18741965)