Xiaertai group is a suit of metamorphic rocks outcropped in northern Liaoning Province and southern Jinlin Province, tectonically located in the south margin of Jilin-Heilongjiang orogenic belt.

• 摘要下二台群是出露于辽宁省北部、吉林省南部的一套变质岩系，位于吉黑造山带南缘。