Definitions for "Geologic Column"
A diagram representing divisions of geologic time and the rock units formed during each major period.
A representation of the vertical arrangement and classification of the subdivision of earth's rock layers. Typically the oldest layers are closer to the core of the Earth.
an ideal sequence of rock layers created by combining data from all the known rock sequences at various locations
A column representing the eras and periods of time with their major events and changing life forms.