Affordable Access

Publisher Website

Earthquake mechanisms and tectonics in the Assam-Burma region

Authors
Journal
Tectonophysics
0040-1951
Publisher
Elsevier
Publication Date
Volume
18
Identifiers
DOI: 10.1016/0040-1951(73)90052-8

Abstract

Abstract Eleven new focal mechanisms from earthquakes in the Assam-Burma region have been determined using P-wave first-motion directions reported in the Bulletins of the International Seismological Centre (Edinburgh). Out of them, eight mechanisms indicate thrust faulting, two normal faultings and one strike-slip faulting. In the thrust type of mechanism solutions, sense of motion on the shallow dipping of the two nodal planes is consistent with underthrusting beneath the arc-like mountain ranges. Seismic slip vectors strike in almost northerly direction along the eastern Himalayas and in almost easterly direction along the Burmese arc. A predominance of thrust faulting is consistent with geological evidences of thrusting and uplift in the Himalayas and the Assam-Burma region.

There are no comments yet on this publication. Be the first to share your thoughts.