rift valley

rift valley
   A valley that has developed along a long, narrow continental trough that has down-dropped and is bounded by normal faults; a graben of regional size. It marks part of a zone along which the entire thickness of the lithosphere has ruptured under crustal extension.
   SW & GG

Glossary of landform and geologic terms. 2013.

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  • Rift-Valley — (engl. für „Grabenbruch“) bezeichnet: den Großen Afrikanischen Grabenbruch eine Provinz in Kenia, siehe Rift Valley (Kenia) …   Deutsch Wikipedia

  • Rift Valley — (engl. für „Grabenbruch“) bezeichnet: den Großen Afrikanischen Grabenbruch eine Provinz in Kenia, siehe Rift Valley (Kenia) …   Deutsch Wikipedia

  • Rift Valley — (la) ou Rift (le) suite de dépressions de l Afrique de l Est, jalonnant une faille qui s allonge de la vallée du Jourdain au Malawi; la Rift Valley est occupée par des plaines étroites et de nombreux lacs (V. Grands Lacs). De nombreuses… …   Encyclopédie Universelle

  • Rift Valley — GREAT RIFT VALLEY …   English World dictionary

  • rift-valley — see rift n.2 4 …   Useful english dictionary

  • rift valley — rift .valley n a valley with very steep sides, formed by the cracking and moving of the Earth s surface …   Dictionary of contemporary English

  • rift valley — rift ,valley noun count a valley with steep sides, produced when the land between two parallel cracks in the ground sinks …   Usage of the words and phrases in modern English

  • Rift valley — A rift valley is a linear shaped lowland between highlands or mountain ranges created by the action of a geologic rift or fault. This action is manifest as crustal extension, a spreading apart of the surface which is subsequently further deepened …   Wikipedia

  • rift valley — Geol. 1. graben. 2. a subsea chasm extending along the crest of a mid ocean ridge, locus of the magma upwellings that accompany seafloor spreading. [1890 95] * * * Elongated trough formed by the subsidence of a segment of the Earth s crust… …   Universalium

  • rift valley — noun a valley with steep sides; formed by a rift in the earth s crust • Hypernyms: ↑valley, ↑vale • Instance Hyponyms: ↑Great Rift Valley * * * noun, pl ⋯ leys [count] geology : a long, steep valley formed when two parallel rifts form in the… …   Useful english dictionary

  • rift valley — UK / US noun [countable] Word forms rift valley : singular rift valley plural rift valleys a valley with steep sides, produced when the land between two parallel cracks in the ground sinks …   English dictionary

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