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麻粒岩是太古代变质岩系重要的标志之一,是划分高级变质区的典型岩石类型,至今在我省尚未见正式报导。在部份文献和地质报告中讨论我省太古界变质作用时,虽谈到麻粒岩相,但无实际资料。一九七四年吉林省地质局区调三分队在编测比例尺1:20万《浑江市幅》时,于老岭西南段,浑江市大粟子公社西北二十一公里的旱道大东岔 L450观察点发现麻粒岩的基岩露头(相当龙岗群四道砬子河组顶部)。当时野外定名为“含石榴石斜长角闪片麻
Granulite is one of the most important symbols of Archean metamorphic rocks. It is a typical type of rock that is divided into advanced metamorphic zones and so far no official reports have been made in our province. When discussing metamorphic metamorphism in our province in some documents and geological reports, although it refers to granulite facies, there is no actual data. In 1974, when the third unit of Geological Bureau of Jilin Province transferred a scale of 1: 200,000 “Hunjiang City” to the southwest section of Lao Ling and the 21km northwest of the Subei Sub-commune in Hunjiang City Dongcha L450 observation point found granulite bedrock outcrops (quite Longgang group of four Bangzi River group top). At that time, the wild named "garnet containing longhorn sparkle flax