rift valley

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Rift Valley

 (rĭft)

rift valley

n.
A valley that has developed along a rift, especially one bounded by normal faults.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

rift valley

n
(Geological Science) a long narrow valley resulting from the subsidence of land between two parallel faults, often associated with volcanism. The East African Rift Valley is an example
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

gra•ben

(ˈgrɑ bən)

n.
a portion of the earth's crust, bounded on at least two sides by faults, that has dropped downward in relation to adjacent portions.
[1895–1900; < German: ditch]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

rift valley

1. A long, narrow valley having normal geologic faults on either side. Rift valleys usually form where the Earth's outer layer (the lithosphere) has become thin because of plate-tectonic processes. See more at tectonic boundary.
2. The deep undersea valley located along the center of the mid-ocean ridge.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

rift valley

A long narrow trough where land has sunk between two in-facing parallel faults; also called a graben.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.rift valley - a valley with steep sides; formed by a rift in the earth's crust
vale, valley - a long depression in the surface of the land that usually contains a river
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations

rift valley

nfossa tettonica
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
References in periodicals archive ?
'If you stripped away all of the ice here today, you would see a feature every bit as dramatic as the huge rift valleys you see in Africa and in size as significant as the Grand Canyon,' said Robert Bingham of the University of Aberdeen, the study's lead author.
"If you stripped away all of the ice here today, you'd see a feature every bit as dramatic as the huge rift valleys you see in Africa and in size as significant as the Grand Canyon.
Instead of Tibet crumpling like an accordion, we see these rift valleys. The rifts are from the east-west stretching of the plateau," maintains Paul Kapp, assistant professor of geosciences at the University of Arizona, Tucson.