Red River Fault
The Red River Fault or Song Hong Fault is a major fault in Yunnan, China and Vietnam which accommodates continental China's southward movement It is coupled with that of the Sagaing Fault in Burma, which accommodates the Indian plate's northward movement, with the land 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.
