Publication 66

Electrically conductive crust in southern Tibet from INDEPTH magnetotelluric surveying

Chen, L., J.R. Booker, A.G. Jones, N. Wu, M. Unsworth, W. Wei and H. Tan

Abstract

The crust north of the Himalaya is generally electrically conductive below depths of 10 to 20 km. This conductive zone approaches the surface beneath the Kangmar dome (dipping north), and extends beneath the Zangbo suture. A profile crossing the northern Yadong-Gulu rift shows that the high conductivity extends outside the rift, and its top within the rift coincides with a bright spot horizon imaged on the INDEPTH CMP profiles. The high conductivity of the middle crust is atypical of stable continental regions and suggests that there is a regionally interconnected fluid phase in the crust of the region.

Source

Science, 274, 1694-1696, 1996.

MTNet Home Page Alan's Home Page

Alan G Jones / 10 June 2004 / alan-at-cp.dias.ie