A formation or geological formation is the fundamental unit of lithostratigraphy. A formation consists of a certain number of rock strata that have a comparable ... en.wikipedia.org
2. Formation. The primary formal unit of lithostratigraphic classification. Formations are the only formal lithostratigraphic units into which the stratigraphic column ... www.stratigraphy.org
Formation ? a stratigraphic unit defined on the basis of its relatively homogeneous lithological characteristics as well as other physical and fossil attributes, and ... people.hofstra.edu
Stratigraphy. The study of the origin, relationship and extent of rock layers (Strata) . Stratigraphic Units. Supergroup. Group A. Formation A. Member A. Member B ... scidiv.bellevuecollege.edu
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