研究地区的地层属太古宙迁西群底部上川组。本文涉及其中一部分约4平方公里的面积。岩石都已高度变质,属麻粒岩相的区域紫苏辉石带。由于缺乏顶、底及面向(facing)标志,无法确定其确切层序。按出露情况,可分为三个岩性组合:(1)长英质麻粒岩;(2)斜长石质麻粒岩;(3)超铁镁质麻粒岩。由于深度变质,早期组构形迹模糊不 The strata in the study area belong to the Shangchuan Formation at the bottom of the Archean Qianxi Group. This article covers some of the area of ​​about 4 square kilometers. Rocks have been highly metamorphosed, belonging to granulite facies perillar pyroxene belt. Due to the lack of top, bottom and facing signs, the exact sequence can not be determined. According to the situation of detritus, it can be divided into three lithologic combinations: (1) Chang-Ying quality granulite; (2) plagioclase granulite; (3) Supranus magmatism granulite. Due to the deep metamorphism, the early structural blurs are not fuzzy