中新生代以来华北能源盆地与造山带耦合演化过程及其特征

North China Energy Basin and Orogenic Belt Coupled Evolution Process and Its Characteristics since Meso-Cenozoic

受欧亚、印度—澳大利亚及太平洋三大动力体系的联合和复合作用,自中生代以来,华北能源盆地由周缘开始逐渐向盆内发育了复杂的盆-山耦合演化过程,形成了不同的构造变形和耦合演化特征。自西向东构造变形依次为西部稳定弱变形亚区、中部过渡变形亚区以及东部伸展变形亚区。同时,由西向东,构造变形由弱挤压至伸展,构造活动性由微弱到显著,且华北陆块东西两侧构造演化特征各不相同。华北能源盆地盆-山展布、耦合演化及其盆-山演化的动力学过程直接控制着盆地各种地质作用的发生和盆地类型及其演化,进而总体制约着能源矿产的赋存规律及成藏机制。

Under the combination and composition of Eurasia, Indo-Australia and Pacific three large dynamical systems, since Mesozoic, basin-mount coupled evolution process developed in the North China energy basin gradually from periphery toward basin center and formed different structural deformations and coupled evolutional features. From west to east, structural deformation categories have west stable weak deformed subarea, middle transitional deformed subarea and east extensional deformed subarea in turn. Meanwhile, from west to east, structural deformation from weakly compressive to extensional, structural activity from weak to striking, and structural evolution characteristics on east and west sides of North China landmass are diverse from one another. North China energy basin basin-mount distribution, coupled evolution and basin-mount evolution dynamic process directly controlled various geological processes happening in the basin, basin types and evolution, and then generally restricted energy minerals’hosting pattern and reservoiring mechanism.