The Precambrian ductile deformation sequence and crustal evolution in Banshigou,South Jilin

The 1∶50 000 mapping revealed a set of ductile deformation belts in the metamorphic rocks in Banshigou area. Five deformation episodes could be identified in the area:Pre Fuping episode at intermediate depth,episode 1 of Fuping cycle at shallow to intermediate depth,episode 2 of Fuping cycle at intermediate to shallow depth,early Lüliang cycle at shallow depth,late Lüliang cycle at surficial to shallow depth.The foliations are characteristic of ductile deformation,suggesting that the nearly E W striking Longgang massif consists of tectonic accumulation corresponding transfer from ductile to brittle deformation and from mobile to stable setting.