{{Short description|Seismic fault in China and Vietnam}} thumb|Topographic map showing the Red River and fault [[File:Jianshui - Potou xiang - approaching Red River - P1370756.JPG|thumb|The Red River (Nansha Reservoir) seen from the slope of its deep valley, south of Potou Township, Jianshui County]]
The '''Red River Fault''' or ''' Song Hong Fault''' ({{langx|vi|Đới Đứt Gãy Sông Hồng}}) is a major fault in Yunnan, China and Vietnam which accommodates continental China's (Yangtze plate) southward movement.<ref>{{cite web |url=http://www.earthobservatory.sg/media/news-and-features/295-myanmar-earthquake-of-march-24th-magnitude-68.html |title=Myanmar earthquake of March 24, 2011 – Magnitude 6.8 |accessdate=2012-11-07 |url-status=dead |archiveurl=https://web.archive.org/web/20121223073524/http://www.earthobservatory.sg/media/news-and-features/295-myanmar-earthquake-of-march-24th-magnitude-68.html |archivedate=2012-12-23|last = Earth Observatory of Singapore, NTU }}</ref> It is coupled with that of the Sagaing Fault in Burma, which accommodates the Indian plate's northward movement, with the land (Indochina) in between faulted and twisted clockwise. It was responsible for the 1970 Tonghai earthquake.
It is named after the Red River which runs through the valley eroded along the fault trace.
The Red River Fault was a sinistral strike-slip shear zone until Miocene times when it became reactivated as a brittle dextral strike-slip fault.<ref name="Watkinson_etal_2008">{{Cite journal |last1=Watkinson |first1=I. |last2=Elders |first2=C. |last3=Hall |first3=R. |date=2008 |title=The kinematic history of the Khlong Marui and Ranong Faults, southern Thailand |journal=Journal of Structural Geology |volume=30 |issue=12 |pages= 1554–1571 |doi=10.1016/j.jsg.2008.09.001}}</ref><ref name="Trinh_etal_2012">{{Cite journal |last1=Trinh |first1=P.T. |last2=Liem |first2=N.V. |last3=Huong |first3=N.V. |last4=Vinh |first4=H.Q. |last5=Thorn |first5=B.V. |last6=Thao |first6=B.T. |last7=Tan |first7=M.T. |last8=Hiang |first8=Nguyen |date=2012 |title=Late Quaternary tectonics and seismotectonics along the Red River fault zone, North Vietnam |journal=Earth-Science Reviews |volume=114 |issue=3–4 |pages=224–235 |doi=10.1016/j.earscirev.2012.06.008}}</ref>
==See also== *1970 Tonghai earthquake *1925 Dali earthquake *2021 Dali earthquake
==References== {{reflist}}
{{Indochina plates}}
Category:Geology of Vietnam Category:Geology of China Category:Seismic faults of Asia Category:Strike-slip faults
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