diapir

From Ancient Greek διαπειραίνω (diapeiraínō, “to pierce through”).

• (UK, US) IPA^(key): /ˈdaɪ.ə.pɪə(ɹ)/

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diapir (plural diapirs)

1. (geology) An intrusion of a ductile rock into an overburden.
   • 29 April 1989, Nigel Henbest, “Geologists hit back at impact theory of extinctions”, in New Scientist‎:

     "If a diapir is outside an established plume it rises at a much slower rate," Loper says.

   • 1994, Peter Olson, “Mechanics of Flood Basalt Magmatism”, in Michael P. Ryan, editor, Magmatic Systems‎, Academic Press, →ISBN, page 12:

     This final stage is characterized by the cooling and resolidification of the partially molten diapir within the mantle, slow subsidence at the surface, and greatly diminished rates of crustal addition.

   • 2004, Richard Fortey, The Earth: An Intimate History‎, HarperCollins, published 2010, →ISBN, page unnumbered page:

     Deeply buried deposits of sea-salt dome upwards and pass through the overlying strata, as a kind of intrusive lobe, eventually emerging at the surface – the rising tongue is called a diapir.

• diapiric
• diapirically
• diapirism

From Ancient Greek διαπειραίνω (diapeiraínō, “to pierce through”).

• IPA^(key): /dja.piʁ/

diapir m (plural diapirs)

1. (geology) diapir