Crustal structure beneath the Indochina peninsula from teleseismic receiver functions
Article first published online: 24 DEC 2010
Copyright 2010 by the American Geophysical Union.
Geophysical Research Letters
Volume 37, Issue 24, December 2010
How to Cite
2010), Crustal structure beneath the Indochina peninsula from teleseismic receiver functions, Geophys. Res. Lett., 37, L24308, doi:10.1029/2010GL044874., , and (
- Issue published online: 24 DEC 2010
- Article first published online: 24 DEC 2010
- Manuscript Accepted: 28 OCT 2010
- Manuscript Revised: 18 OCT 2010
- Manuscript Received: 27 JUL 2010
- receiver function;
- low-velocity zone
 We analyze teleseismic receiver functions to determine the crustal structure beneath the Indochina peninsula which is located immediately south-east of the eastern Himalayan syntaxis basin. We found that the Indochina peninsula is characterized by a thin (∼31 km) crust with a low Vp/Vs ratio (∼1.68). The intra-lower crustal low-velocity zone (LVZ) is observed beneath the northwestern part of our study region. We hypothesize that it is an extension of the lower crustal LVZ observed beneath the southeastern Tibet and the South China block and that it terminates at the Dien Bien Phu Fault (DBPF). A LVZ observed in the upper crust beneath southeast of the DBPF indicates that the crust is ductile and earthquakes are rare.