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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
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


diapir

/ 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.


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Other Words From

  • di·a·pir·ic [dahy-, uh, -, pir, -ik], adjective
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Word History and Origins

Origin of diapir1

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

Origin of diapir1

C20: from Greek diapeirainein to make holes through, pierce

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diaphysisdiapophysis