diapir
English
Etymology
From Ancient Greek διαπειραίνω (diapeirainō, “to pierce through”).
Pronunciation
Noun
diapir (plural diapirs)
- (geology) An intrusion of a ductile rock into an overburden.
- 1989, Nigel Henbest, "Geologists hit back at impact theory of extinctions", New Scientist, 29 April 1989:
- "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 Magmatic Systems (ed. Michael P. Ryan), Academic Press (1994), ISBN 0126050708, 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 (2010), ISBN 9780007373338, 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.
- 1989, Nigel Henbest, "Geologists hit back at impact theory of extinctions", New Scientist, 29 April 1989: