Stratigraphic column

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Notion

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Science and technology

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What Wikipedia says

A stratigraphic column is a representation used in geology and its subfield of stratigraphy to describe the vertical location of rock units in a particular area. A typical stratigraphic column shows a sequence of sedimentary rocks, with the oldest rocks on the bottom and the youngest on top.

Excerpt from the Wikipedia article “Stratigraphic column”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Heinz Furrer (Paleontological Institute University Zürich), modified by Daniele Albisetti, CC BY-SA 3.0, via Wikimedia Commons.