Which has been divided into five gneiss rock-bodies,include two gneiss complex rock-bodies.The gneiss suite of Laoanzigou is established,petrology,geochemistry and so on are studied comprehensivly.

• 划分和圈定出5个片麻岩体，归并为2个片麻杂岩，建立了老安子沟片麻岩套，并从岩石、地球化学等方面综合进行了探讨。