The lanshantou kyanite-bearing eclogite with coesite inclusions in the sulu ultrahigh-pressure metamorphic belt and its PTt path

摘要

Coesite inclusions are found in kyanite from the Lanshantou eclogite in the Sulu ultrahigh-pressure(UHP) metamorphic belt. This discovery extends the stable region of kyanite to over 2.4 GPa. As an important UHP metamorphic belt in China, the Sulu eclogite belt is the product of A-subduction induced by strong compression of the Yellow Sea terrane to the Jiaodong-northereastern Jiangsu terrane during the interaction of the Eurasian plate the Palaeo-Pacific plate in the Indosinian. It stretches about 350 km contains over 1000 eclogite bodies.