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徐州铜山吴桥—睢宁张圩一带主要出露一套新元古代地层 ,包括贾园组、赵圩组、倪园组和九顶山组 ,贾园组未见底、九顶山组未见顶。贾园组主要为灰色薄—中厚层细砂质、粉砂质泥质微晶灰岩 ,赵圩组主要为中厚层微晶灰岩 ,倪园组主要为薄层—中厚层微晶白云岩和灰岩 ,九顶山组主要为中厚层微晶白云岩。岩层受推覆构造运动影响强烈变形 ,褶皱和断裂构造发育 ,文中运用平衡地质剖面方法 ,对二朗山—宋湾剖面进行了平衡后得出该区造山运动缩短量为 3 .0 km ,缩短率为 15 %。
Xuzhou Tongshan Wuqiao - Suining Zhangwei area mainly exposed a set of Neoproterozoic strata, including Jiayuan group, Zhao Wei group, Niyuan group and Jiuding Mountain group, Jiayuan group did not bottom, Jiuding Mountain group Peak. The Jiayuan Formation is mainly composed of thin, medium-thick, fine sandy and silty shale-bearing microcrystalline limestone, while the Zhao-Wei Formation is mainly medium- and thick-grained microcrystalline limestone. The Niyuan Formation is mainly thin- Crystalline dolomite and limestone, and the Jiudingshan Formation is mainly medium-thick microcrystalline dolomite. The strata affected by nappe tectonic deformation are strongly deformed and the folds and faults are developed. By using the balanced geological section method, the balance of the Longlang-Songwan section is concluded that the shortening of the orogenic movement in this area is 3.0 km, which is shortened The rate is 15%.