diapir

[ dahy-uh-peer ]

noun

, Geology.

1. a dome, or anticline, the upper regions of which have been ruptured and penetrated by material squeezed up from below. Compare plume ( def 10 ), salt dome.

diapir

/ ˈdaɪəˌpɪə /

noun

1. geology an anticlinal fold in which the brittle overlying rock has been pierced by material, such as salt, from beneath

diapir

/ dī′ə-pîr′ /

1. A fold or dome, such as an anticline, in which the upper strata of sediment or rock have been ruptured by the upward movement of more plastic rock, such as a body of salt, gypsum, or lava.

Other Words From

• di·a·pir·ic [dahy-, uh, -, pir, -ik], adjective

Word History and Origins

Origin of diapir¹

1915–20; < French, said to be < Greek diapeírein to drive through, pierce; dia- dia- + peírein to pierce

Word History and Origins

Origin of diapir¹

C20: from Greek diapeirainein to make holes through, pierce