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礼乐盆地所经历的张裂-漂移-碰撞沉降构造历史,在沉积物沉积样式、沉降历史及断裂构造样式中均有反映,因此,分析盆地沉积过程及其与构造的耦合关系可揭示其演化过程.通过对礼乐盆地沉积充填过程、沉降方式及构造特征的分析,认为礼乐盆地具双层结构模式特征,以T60(23.8Ma)不整合面为界,下部为不对称楔状半地堑.早期沉积受控于边界铲式断层,以构造沉降为主;自23.8Ma以来转变为以热沉降为主.礼乐盆地表现为3个幕式沉降特点,每个沉降幕都为由慢至快的沉降过程.其经历了3个沉积充填旋回,对应于古新世-早渐新世的张裂、晚渐新世-中中新世的张裂-漂移,以及晚中新世-第四纪裂后沉降这3个演化阶段,应力场相应由早期拉张环境转变为中期拉张-走滑以及晚期的挤压-走滑环境.
The history of the rift-drift-collision settlement experienced by the Ritual Basin is reflected in sediment depositional patterns, sedimentation history and fault tectonic patterns. Therefore, analyzing the basin sedimentary process and its coupling with the tectonic setting can reveal its evolution Through the analysis of sedimentary filling process, settlement and tectonic features in the Liyue basin, it is considered that the Liyue basin is characterized by double-layered structure model, with T60 (23.8Ma) unconformity as its boundary and its lower part as asymmetric wedge half-graben Early sedimentation was controlled by the boundary shovel faults, mainly in the structural subsidence, and since 23.8Ma, the thermal subsidence was predominant.The Rift Basin showed three curtain subsidence characteristics, with each subsidence being from slow Fast sedimentation process. It experienced three sedimentary filling cycles corresponding to the Pliocene-Oligocene, the Oligocene-Middle Miocene, and the Late Miocene- During the three evolution stages of the subsidence after the Quaternary period, the stress field correspondingly changed from early extensional environment to medium-term extension-strike-slip and late-stage extrusion-strike-slip environment.