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River anticline information


A river anticline is a geologic structure that is formed by the focused uplift of rock caused by high erosion rates from large rivers relative to the surrounding areas.[1] An anticline is a fold that is concave down, whose limbs are dipping away from its axis, and whose oldest units are in the middle of the fold.[2] These features form in a number of structural settings. In the case of river anticlines, they form due to high erosion rates, usually in orogenic settings. In a mountain building setting, like that of the Himalaya or the Andes, erosion rates are high and the river anticline's fold axis will trend parallel to a major river. When river anticlines form, they have a zone of uplift between 50-80 kilometers wide along the rivers that form them.[3]

  1. ^ Montgomery, David R.; Stolar, Drew B. (1 December 2006). "Reconsidering Himalayan river anticlines". Geomorphology. 82 (1–2): 4–15. Bibcode:2006Geomo..82....4M. doi:10.1016/j.geomorph.2005.08.021.
  2. ^ Marshak, Ben A. van der Pluijm, Stephan (2004). Earth Structure: An Introduction to Structural Geology and Tectonics (2nd ed.). New York: Norton. pp. 353–354. ISBN 978-0-393-92467-1.{{cite book}}: CS1 maint: multiple names: authors list (link)
  3. ^ Robl, Jörg; Stüwe, Kurt; Hergarten, Stefan (20 June 2008). "Channel profiles around Himalayan river anticlines: Constraints on their formation from digital elevation model analysis". Tectonics. 27 (3): n/a. Bibcode:2008Tecto..27.3010R. doi:10.1029/2007TC002215. S2CID 128173759.

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