Archaean era granulite facies metamorphite series are extensively outcropped in Sa - heqiao, Hebei province.
冀东迁西洒河桥是太古代麻粒岩相变质岩系广泛出露的地区。
2
In the research area, the primary surface formation are the Archeozoic - Proterozoic Jiaonan group there are kinds of Clastic rocks and Volcanic rocks in the metamorphite and Mesozoic Cretaceous.