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:
“The parent who loves his child dearly but asks for nothing in return might qualify as a saint, but he will not qualify as a parent. For a child who can claim love without meeting any of the obligations of love will be a self-centered child and many such children have grown up in our time to become petulant lovers and sullen marriage partners because the promise of unconditional love has not been fulfilled.”
—Selma H. Fraiberg (20th century)
“Desperation is the raw material of drastic change. Only those who can leave behind everything they have ever believed in can hope to escape.”
—William Burroughs (b. 1914)