Area Of Peng Ann In Sichuan Province, Structure Characteristics Of The Research

This paper said, mainly including peng (in anxian county, YingShanXian,QuXian, NaBuXian, XiChong city and parts of nanchong city. The area is the middlepart GuLiuYi, belonging to yangtz platform, the region more quietly, and in themiddle is the oil and gas exploration favorable area. This research will be based on theformer research, the comprehensive analysis, arrangement of the existing geology,seismic data, and make full use of tectonic geology, the seismic stratigraphy theory, toclear up the stratigraphic framework, through application stretch, extrusion, gravity,detachment structure method of tectonic theory (Ann area tectonic style research; Incombination with regional tectonic background discusses the dynamic in the middle,the dynamics mechanism in flowers. This paper, the main made the following know:1, the area was made clear stratigraphic sequence, peng Ann area of south Chinaregion yangzi strata area formation on the division of strata formation Yangtzechongqing area, surface layer is mainly for the production of the upper Triassic shaxitemple group of the upper Triassic, the SuiNing group and penglai town group, andthe distribution of the small area of4loose sediments.2, Find out the peng Ann of the region’s geological structure characteristics, thefault in development not only in local shaxi temple group and SuiNing groupdevelopment of small faults layer, in deep profile (SB01line): the core of theanticline in nanchong associated two large thrust faults F7, F8, including F7cut the J1(early Jurassic series), T3X (late Triassic xujiahe), J2l (ray mouth slope group)stratum, in T2L (Triassic ray mouth slope group) and T1feixianguan formationslippage between, F8development in only J1(early Jurassic series). In the camp ofthe mountain anticline nuclear associated F1-F6six thrust faults, among them, the F4F6cut J1(early Jurassic series), T3X (late Triassic xujiahe) stratum, slippage in T2L(three fold ray mouth slope group), F1, F3, F5, only development in J1(early Jurassicseries), F2cut the J2S (shaxi temple group), in J1slippage. In the camp and the twomountains in nanchong anticline is part of the article8thrust faults of their brokenfrom basically all in40meters-60meters between, so it can be concluded that the thrust fault is in the same period occurred.3, Seismic section explanation is that, the camp anticline and universal aremountain for slippage drape anticline, its detachment horizons for ray mouth sloperock group cream, ray mouth slope under group formation relatively flat, not involvedin the deformation, so the anticline and camp in nanchong thin skin structure ofanticline.4, analyzed the characteristics of structural evolution in the district, thinkHuaYingShan north east to the inheritance structure began to form a yanshan period,Himalayan period to finalize the design, anticline and camp in nanchong mountain tothe north west structure is anticline yanshan movement after the end of the north andsouth to stress and gravity under the action of potential energy products.5, peng Ann area new tectonic movement with a large area rise is given priorityto, multilevel river terraces and flatten surface has the obvious intermittent that rise, toreflect the rhythmic crustal movement.