【摘要】 本文讨论了南阳凹陷东庄地区的构造特征,探讨了东庄地区同生断裂、背斜构造和地堑式断裂的形成机制。本区同生断裂的发育,与沉积中心逐渐南迁密切相关。欠压实泥岩中的孔隙水,矿物转化过程中析出的层间水和结晶水,在泥岩颗粒相对移动时起润滑作用,从而大大增加了泥岩的可塑性。在上覆地层压力下,泥岩沿着南部断超带基底断面发生塑流上拱,导致上覆地层形成背斜构造和地堑式断裂。更多还原

【Abstract】 Structural characteristics in Dongzhuang area of Nanyang depression are discussed, and the formation mechanism of growth faults, anticline and graben faults is approached in this paper. It is expounded that the development of growth faults is closely relative to south migrating of depositional center. The void water of mudstones, the interstratal water and crystal water separated out during the transtormation of minerals in mudstones play a lubricant role when the grains of mudstones migrate each other. Therefore, the plasticity of mudstones increases greatly. Under the pressure of the overburden, the mud-stones have to flow along the fault plane of base and make the overburden produce the anticline and graben faults.更多还原