A stratigrapher is a specialist in the study of layers of rock.

Stratigraphy, is the scientific discipline concerned with the description of rock successions and their interpretation in terms of a general time scale. It provides a basis for historical geology, and its principles and methods have found application in such fields as petroleum geology and archaeology.

Many leading people in this field of study have worked in the oil industry and belong to the American Association of Petroleum Geologists. They research and share information on plate tectonics and geological faults.

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