1·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.
研究区内出露的地层以太古界——元古界胶南群的各类变质岩和中生界白垩系各类碎屑岩和火山岩为主。