Definition of obduction in English:

obduction

noun

Geology
  • [mass noun] The sideways and upwards movement of the edge of a crustal plate over the margin of an adjacent plate.

    ‘the granitic magmas formed when the ophiolite complex was obducted onto the continental margin’
    • ‘The Papua New Guinea continental crust appears to be underthrusting the adjacent marginal basin and obduction of the ophiolite is occurring in an uphill direction.’
    • ‘After obduction, there was a slow rate of subsidence, which reflects the continuing cooling of the underlying Indian lithosphere after rifting.’
    • ‘Late Cretaceous obduction of ophiolite complexes onto the Indian shield has also been reported from Pakistan.’
    • ‘During the Cretaceous, however, an ocean basin existed in this area, either as a remnant ocean that had escaped Jurassic obduction or as a small Cretaceous pull-apart basin.’
    • ‘However, even in the absence of tectonic boundary loads, ophiolitc obduction imposes significant stresses on the flexed plate.’

Origin

1970s: from Latin obduct- covered over, from the verb obducere, from ob- against, towards + ducere to lead.

Pronunciation:

obduction

/ɒbˈdʌktʃ(ə)n/