EARLY CRETACEOUS METAMORPHIC CORE COMPLEXES AND EXTENSIONAL DOMES AS A RESULT OF PARALLEL EXTENSION TECTONICS IN EASTERN EURASIAN CONTINENT
Integrated studies on the extensional structures, geochemistry of syn-kinematic granitic rocks suggest that extension of the lithosphere triggered the magmatisms from both the crust and the mantle. The Early Cretaceous tectono-magmatic evolution of the eastern Eurasian continent is governed by the Parallel Extension Tectonics (PET). In the PET, detachment faulting in both the crust and lithospheric mantle resulted in the loss of some of the subcontinental roots, gave rise to the exhumation of the mcc's and ed's, and triggered transformation of the lithospheric mantle, plutonic emplacement and volcanic eruptions of hybrid magmas.
The Aegean, the Cordilleran and the eastern Eurasian extensional domains are in general related to plate convergence, but attributed to different tectonic processes. Advancing subduction and subduction roll-back are the dominant dynamic factors triggering the tectonic extension. Extensional structures in eastern Eurasian continent were related to Paleo-Pacific plate subduction, which provides a general architecture of the extensional tectonics of a rifted continent.