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层间水力断裂是沉积盆地深处与大规模流体活动有关的断层，目前的地球物理方法及深源钻探取样已经证实活动水力断裂广布于中、新生代沉积盆地中。已褶皱成山的晚古生代裂谷盆地中发育的大规模层间水压碎屑岩是过去沉积盆地发育过程中大规模流体相带及其水力压裂作用的地质遗迹。研究了水压碎屑岩的地质特征、形成地质条件及构造—流体动力作用成岩模式。认为研究水力断裂对认识上地壳层圈拆离、推覆构造、流体输导、多位成矿、油气运移、慢震活动及常规地震发生等问题有极重要的地质意义。
Interlaminar hydraulic fractures are faults associated with large-scale fluid activities deep in the sedimentary basin. Current geophysical methods and deep-source drilling sampling have confirmed that active hydraulic fractures are widely distributed in Meso-Cenozoic sedimentary basins. The large-scale inter-layer hydraulic clastic rocks developed in the late Cretaceous rift basins that have been folded into mountains are the geological relics of large-scale fluid facies belts and their hydraulic fracturing during the development of the past sedimentary basins. The geological characteristics of hydraulic clastic rocks are studied, and geological conditions and tectonic-hydrodynamic diagenetic models are formed. It is considered that it is very important geological significance to study hydraulic fracturing to understand the issues such as the detachment of crustal crust, nappe structure, fluid transport, multiple mineralization, hydrocarbon migration, slow seismic activity and conventional seismic occurrence.