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碳酸盐岩断裂破碎带结构、分布与发育机制

本站小编 Free考研考试/2022-01-02

摘要
断裂带通常包括狭窄的断层核与宽阔的破碎带,并对岩石物理及其水力学、流体与渗透性具有重要作用。根据断裂破碎带结构的差异,将碳酸盐岩断层核划分为颗粒支撑、基质支撑与胶结支撑等3种类型,将碳酸盐岩破碎带划分碎裂带与裂缝带。不同类型碳酸盐岩断层核与破碎带形成多种类型组合,并造成断裂破碎带多种复杂的渗流结构。通过井—震资料的结合,可以判识沉积盆地内部较宽的碳酸盐岩断裂破碎带,其宽度—位移关系可以指示断裂破碎带的不同生长方式与机制。复杂内部结构、多期构造成岩作用与non-Andersonian破裂机制可能导致碳酸盐岩断裂破碎带的异常生长,也是碳酸盐岩断裂破碎带机理研究的重要方向。
断裂破碎带/
碳酸盐/
岩结构/
生长/
构造成岩作用/
机制

Fault zone generally includes narrow fault core and broad damage zone,which plays an important role in petrophysics,hydraulics,fluid and permeability in the Earth crust. Together with the outcrop and subsurface data,the carbonate fault core is divided into three types:granular support,matrix support and cementation support;and the carbonate damage zone is divided into damaged zone and fracture zone. These subtype architectures show varied assemblages,and different permeability profiles in the carbonate fault damage zones. Together with the well data and seismic data,the envelope of the wide fault damage zones can be identified in the subsurface carbonate rocks. The displacement-width scaling is a signature of the carbonate fault damage zone growth. A variety of complex architecture,multistage structural diagenesis and non-Andersonian mechanism may be responsible for the multiple stages and modes growth of carbonate fault damage zones,which are also primary research directions in carbonate fault damage zones.
Fault damage zone/
Carbonate/
Architecture/
Growth/
Structural diagenesis/
Mechanism



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