【摘要】 运用现代构造解析理论和方法,对新疆可可托海—四川简阳人工地震测深剖面与天然地震面波层析成像进行构造解析基础上,综合地质学、深源岩石包体构造岩石学和地球化学以及其他地球物理学标志等多学科综合研究显示,高速块体或幔块构造的几何结构型式是控制该区岩石圈构造格局和岩石圈表层构造变形基本条件之一。本文建立起该地学断面地壳及岩石圈与软流圈速度结构模型和物质组成结构模型,划分出岩石圈3种几何结构模式:克拉通陆根状结构、造山带楔状结构和高原陆根状结构,以及岩石圈二类构造演化类型:克拉通型岩石圈和增厚型岩石圈。在系统论述断面地壳及岩石圈结构构造类型特征基础上,探讨了该断面软流圈结构特征,岩石圈与软流圈相互作用及其地幔动力学模式。更多还原

【Abstract】 By using the theory and method of modern structural analysis, the paper analyses the explosion seismic sounding profiling and natural seismic surface wave tomographic imaging in the Koktokay of Xinjiang to Jianyang of Sichuan geoscience transect and integrates the results of research on geology, geochemistry, structural petrology of deep-seated xenoliths and geophysical signs. These studies indicate that the geometric structure pattern of high-speed blocks or mantle block tectonics is one of the basic conditions for controlling the lithospheric tectonic pattern and tectonic deformation of the lithospheric surface. The crustal, lithospheric and asthenospheric velocity structure models and material composition models are constructed in this geoscience transect. Based on a systematic study of the high-speed blocks in the lithosphere, three geometric structures of the lithosphere are distinguished: craton-root-shaped structure, orogen-wedge-shaped structure and plateau-root-shaped structure, and two tectonic evolution types of the lithospheres are recognized: cratonic lithosphere and thickened lithosphere. Based on the aforesaid systematic description, the paper discusses the structural types of the asthenosphere, interaction between the lithosphere and asthenosphere and mantle dynamic model of this geoscience transect.更多还原