The mineral chemistry of zoned amphiboles in the metabasites indicates a progressive evolution from greenschist, amphibolite facies to amphibolite-granulite facies, being consistent with increasing Ti, Al and (K + Na) from core to rim.

• 变基性岩角闪石环带的矿物化学分析结果表明:从核部到边部,钛、铝、(钠+钾)含量增长,反映了从绿片岩相到角闪岩相或角闪岩-麻粒岩相的进变质演化过程;