A
dome is a feature in
structural geology consisting of symmetrical
anticlines that intersect each other at their respective . 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.