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Dome (geology)
A dome is a feature in structural geology consisting of symmetrical anticlines that intersect each other at their respective apices. Intact, domes are distinct, rounded, spherical-to-ellipsoidal-shaped protrusions on the Earth's surface. However, a transect parallel to Earth's surface of a dome features concentric rings of strata. Consequently, if the top of a dome has been eroded flat, the resulting structure in plan view appears as a bullseye, with the youngest rock layers at the outside, and each ring growing progressively older moving inwards. These strata would have been horizontal at the time of deposition, then later deformed by the uplift associated with dome formation.〔Fossen, Haakon. Structural geology. Cambridge University Press, 2010.〕〔Monroe, James S., and Reed Wicander. ''The Changing Earth: Exploring Geology and Evolution.'' 2nd ed. Belmont: Wadsworth Publishing Company, 1997. ISBN 0-314-09577-2〕
==Formation mechanisms==
There are many possible mechanisms responsible for the formation of domes, the foremost of which are post-impact uplift, refolding, and diapirism.
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