The Red River Fault or Song Hong Fault (
Vietnamese: Đới Đứt Gãy Sông Hồng) is a major fault in
Yunnan, China and
Vietnam which accommodates continental China's (
Yangtze Plate) southward movement.[1] 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.[2][3]
^Watkinson, I.; Elders, C.; Hall, R. (2008). "The kinematic history of the Khlong Marui and Ranong Faults, southern Thailand". Journal of Structural Geology. 30 (12): 1554–1571.
doi:
10.1016/j.jsg.2008.09.001.
^Trinh, P.T.; Liem, N.V.; Huong, N.V.; Vinh, H.Q.; Thorn, B.V.; Thao, B.T.; Tan, M.T.; Hiang, Nguyen (2012). "Late Quaternary tectonics and seismotectonics along the Red River fault zone, North Vietnam". Earth-Science Reviews. 114 (3–4): 224–235.
doi:
10.1016/j.earscirev.2012.06.008.