Stratigraphic Guide, Chapter 5. Lithostratigraphic Units (stratigraphy.org)Lithostratigraphic units are bodies of rocks, bedded or unbedded, that are defined and characterized on the basis of their lithologic properties and their stratigraphic relations. Lithostratigraphic units are the basic units of geologic mapping.
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And it came to pass, when Jesus had ended these sayings, the people were astonished at his doctrine:Matthew 7:28 KJV