diapir

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English

WOTD – 30 November 2012
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Etymology

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

Pronunciation

Noun

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.

Derived terms

Translations

French

Etymology

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

Pronunciation

Noun

diapir m (plural diapirs)

  1. (geology) diapir
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