Abstract:

Song Ba profile in K’bang district, Gia Lai province composes of deep metamorphic rocks such as metamafic, metapelite, metacarbonate reaching to granulite facies. In the metacarbonate beds in Kon Roi and Xa Nam areas, the authors, in the first time, described special structures with similar features and may totally compare to those of stromatolite described in Australia, in West of Russian Platform as well as in many places in the world. The stromatolite structures in metamorphic profile of Kan Nak Complex can be considered as oldest relics of life in the old metamorphic formations in Kon Tum Block and in Southeast of Asia. That is the evidence to confirm the independent of Kan Nak Complex from metamorphic described in Ngoc Linh and Kham Duc Complexes.