Definition of graben in English:

graben

Line breaks: gra¦ben
Pronunciation: /ˈɡrɑːb(ə)n
 
/

noun (plural same or grabens)

Geology
An elongated block of the earth’s crust lying between two faults and displaced downwards relative to the blocks on either side, as in a rift valley.
More example sentences
  • These faults bound horsts, grabens and tilted blocks.
  • The area is characterized by a series of low-relief Jurassic horsts and graben.
  • A graben is a down-dropped block of the crust resulting from extension, or pulling, of the crust.

Origin

late 19th century: from German Graben 'a ditch'.

Definition of graben in:

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