Active tectonics Dien Bien - Lai Chau fault zone Pull-apart basins Quaternary Điện Biên
Issue Date:
2007
Publisher:
ĐHQGHN
Citation:
VNU Journal of Science, Earth Sciences 23 (2007) 76-79
Abstract:
The Dien Bien basin in the Northwest of Vietnam is the largest one of the pull-apart
basins related to the Dien Bien - Lai Chau fault zone. This basin, orientated from the north to the
south, is 21km long, 6-8km wide and rhomboidal in shape. The process of forming this basin is
related closely to the activities of the Dien Bien - Lai Chau fault zone in Neotectonic time. On
analyzing information concerning the kinematics of the Dien Bien - Lai Chau fault zone, the
geological structure and the sediments of the basin, we suppose that the Dien Bien basin is a splay
pull-apart one related to the movement of the Dien Bien - Lai Chau fault zone in Pliocen-
Quaternary time. The determination of the mechanism of forming the Dien Bien basin is important
to specify Neotectonic activities of the Dien Bien - Lai Chau fault zone.
