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The '''geologic system''' is a conceptual arranged of rock formations around the world meshed together into a single, unbroken record of earth's past.<ref>Wile, Dr. Jay L. ''Exploring Creation With General Science''. Anderson: Apologia Educational Ministries, Inc. 2000</ref> It is also known as the '''geologic column''' or '''geologic timescale'''.
The '''geologic system''' is a conceptual arrangment of rock formations around the world meshed together into a single, unbroken record of earth's past.<ref>Wile, Dr. Jay L. ''Exploring Creation With General Science''. Anderson: Apologia Educational Ministries, Inc. 2000</ref> It is also known as the '''geologic column''' or '''geologic timescale'''.
Development of the system was begun in the late 18th century, and the original divisions were Primary, Secondary, [[Tertiary]], and [[Quaternary]].
Development of the system was begun in the late 18th century, and the original divisions were Primary, Secondary, [[Tertiary]], and [[Quaternary]].