What does rift valley mean?

Definitions for rift valley
rift val·ley

This dictionary definitions page includes all the possible meanings, example usage and translations of the word rift valley.

Princeton's WordNet

  1. rift valleynoun

    a valley with steep sides; formed by a rift in the earth's crust


  1. rift valleynoun

    A graben structure between two tectonic plates which are opening relative to each other.

  2. rift valleynoun

    A mid-oceanic ridge system with central valleys.


  1. rift valley

    A rift valley is a linear shaped lowland between several highlands or mountain ranges, created by the action of a geologic rift or fault. It is a major landform resulting from tectonic forces that mainly stretch the Earth's crust, leading to formation of a series of fault lines, and causing the central area to sink, forming a valley. The formation process usually involves a series of geological processes such as extensional tectonics, crustal rifting, volcanic activities, and sedimentary deposition. Examples include the Great Rift Valley in East Africa and Death Valley in the United States.


  1. Rift valley

    A rift valley is a linear-shaped lowland between several 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 by the forces of erosion. When the tensional forces are strong enough to cause the plate to split apart, it will do so such that a center block will drop down relative to its flanking blocks, forming a graben. This creates the nearly parallel steeply dipping walls. This feature is the beginning of the rift valley. As this process continues, the valley widens, until it becomes a large basin, that fills with sediment from the rift walls and the surrounding area. One of the better long-term examples of this process is the East African Rift. Rifts can occur at all elevations, from the sea floor to plateaus and mountain ranges. They can occur in continental crust or in oceanic crust. Rift valleys are often associated with a number of adjoining subsidiary or co-extensive valleys, which are typically considered part of the principal rift valley geologically. The most extensive rift valley is located along the crest of the mid-ocean ridge system and is the result of sea floor spreading. Examples of this type of rift include the Mid-Atlantic Ridge and the East Pacific Rise.

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  1. Chaldean Numerology

    The numerical value of rift valley in Chaldean Numerology is: 7

  2. Pythagorean Numerology

    The numerical value of rift valley in Pythagorean Numerology is: 4

Examples of rift valley in a Sentence

  1. Dr Shipton:

    You start to see things like decorated bones, beads made from marine shell or ostrich eggs, miniaturzied stone tools, and bones carved into things like arrow points. This is the oldest date we have for when this behavior is first observed, previous sites relating to this early period of modern humanbehaviorr have all been in South Africa and the East African Rift Valley, this is the first site on the coast of East Africa and the first with such a continuous record.

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"rift valley." Definitions.net. STANDS4 LLC, 2023. Web. 9 Dec. 2023. <https://www.definitions.net/definition/rift+valley>.

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