See Also: diapir(dictionary)

diapir (iou)



diapir noun. E20.
[from Greek diapeirainein pierce through, formed as DIA-1 + peirainein, from peran pierce.]
Geology. An anticline in which a core of rock has moved upward to pierce the overlying strata.
diapiric adjective of or pertaining to a diapir; having a structure characterized by an upward protruding body of rock, sediment, etc.: M20.
dia'pirically adverb in the manner of a diapir, with local upwelling M20.
diapirism noun diapiric activity; a localized upward motion of rock, sediment, etc.: M20.