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obduction

obduction

9.9
Sea floor rock moves over the edge of a continent
  • noun
  • /əbˈdʌkʃən/
  • Specialized
translation icon : obducción
  • Geologists study obduction to understand how oceanic crust is pushed over continental plates.

Examples

  • Geologists study obduction to understand how oceanic rocks end up on land.

  • The process of obduction can lead to the formation of mountain ranges.

  • The mountain range formed as a result of obduction millions of years ago.

  • The presence of certain minerals indicates that obduction occurred in this region's past.

  • Geologists study obduction to understand plate tectonics better.

  • The mountain range formed as a result of obduction millions of years ago.

  • The presence of certain minerals indicates that obduction occurred in this region's geological history.

Antonyms

subduction
  • Specialized
4 8.6

One part of Earth's outer shell is pushed under another part into the hot rock below

How Extensive

continental drift
  • Specialized
4 4.8
rifting
  • Specialized
7.4
obduction
  • Specialized
9.9
faulting
  • Specialized
1 7.8
cracking
21 3.5

Surface Forms

obduction singular
obductions plural

Morphology

obduction = obduct (semi-transparent) = obduct + ion

Morphologically clear as 'obduct' + '-ion', but the geological sense is technical and not easily inferred by general learners.

Etymology

Obduction comes from Latin parts ob- 'over' and ducere 'to lead', the same root as conduct. In geology, an obduction is when ocean rock is pushed 'over' the edge of a continent, so the idea of 'leading over' explains the process.