DISCOVERY OF THE PROTEROZOIC LOW-GRADE METAMORPHIC SUBMARINE CARBONATITE LAVAS IN CHINA

The carbonatite lavas found in the Kunyang Group were formed in submar ine extrusive environment. Many igneous features (e.g. colors, texture s, structures, minerals, inclusions) are clear. But most of their petr ologic characteristics are different from typical carbonatites over th e world. Most petrologic details of the rocks are given by comparison with other carbonatites and adjacent sedimentary dolomites. The discov ery of the lavas proves that the carbonatite volcano also existed in K unyang rift.