The discovery of eclogite dikes in low-greenschist fades volcaniclastic rocks of the Dabie Mountains

摘要

ECLOGITE occurs in different metamorphic rocks in the Dabie Mountains. Some dike-like eclogite and garnet amphibolite were discovered when we investigated the newly founded low-greenschist facies volcaniclastic rocks in Changpu, Yuexi County and Siqian, Taihu County ( fig. 1). Coesite and quartz pseudomorphs exist in garnet and omphacite. By studying the occurrence and petrography-mineralogy characteristic, we believe that the eclogite is of igneous origin rather than tectonic melange or metamorphicorigin. The discovery is of geological significance for study of eclogitic origin, formation and ages.