Introduction: CK carbonaceous chondrites are the only group of carbonaceous chondrites that exhibit thermal metamorphism. As a result, CKs display features of metamorphism such as silicate darkening, recrystallization and shock veins. Calcium Aluminum Inclusions and Fe-Ni metal are rare. Type Chondrule Opaque CAI's Matrix MET01149,11 3 25.0 7.0 2.0 66.0 EET99430,5 4 5.1 3.5 4.7 86.7 QUE99679,7 ...

The central part of the Qilian orogenic belt (QOB) on NE Tibetan Plateau is known as Central Block (CQB), and research deformation metamorphism CQB improves our understanding tectonic evolution QOB, which makes up an important continental crust in eastern Asia. Here we present results thermobarometric calculation geochronological analyses for deformed metamorphic rocks northern margin CQB, thes...