Geochemical characteristics of volcanic rocks of the Western Baikal region and Syria as indicators of the sources of the delaminated continental lithosphere

Abstract

Volcanic rocks of the Western Baikal region and Syria have similar geochemical characteristics of the sources due to the processes of delamination of the lithosphere, which entailed the isolation of the crustal and restitutic components of igneous melts. Delamination of the lithosphere of the Western Baikal region, which was developed during the transition from the South Baikal depression to the inversion part of the Tunka valley, is confirmed by seismic tomography data. Demination of the lithosphere of Syria is assumed by geochemical characteristics of volcanic rocks. By analogy with the Western Baikal region, which experienced the influence of the Indo-Asian convergence in the late Cenozoic, the development of the delamination of the lithosphere of Syria is associated with the deformation field of the convergent interaction of the Arabian plate and Eurasia, in which the structures of the Levantine basin and the dead sea fault system took shape