Petrogenesis of Mesozoic granitoids and volcanic rocks in South China: A response to tectonic evolution

This paper summarizes the new results on the petrogenesis of Mesozoic granitoids and volcanic rocks in South China. The authors propose that these rocks were formed in time and space as a response to regional tectonic regime change from the continent-continent collision of the Indosinian orogeny within the broad Tethyan orogenic domain in the Early Mesozoic (T 1 -T 3 ) (Period I) to the largely extensional setting as a result of the Yanshanian orogeny genetically associated with the NW-WNW-ward subduction of the paleo-Pacific oceanic lithosphere in the Late Mesozoic (J 2 -K 2 ) (Period II). Of the Period I Indosinian granitoids, the early (T 1 -T 2 1 ) ones are syn-collisional, and formed in a compressional…