中国大陆岩石圈岩石学结构、类型与不均一性

Petrological structure, types and inhomogeneity of the lithosphere beneath continental China

根据中国大陆的地质特征和现今地球物理特征,区分不同地区的岩石圈类型;依据岩石学方法、地球演化模型、地震波速与成分的关系等综合方法,建立了相应类型岩石圈的岩石学结构;根据岩石圈的动力学性质,划分出中国大陆克拉通、造山带、裂谷、边缘海洋壳和岛弧等5大岩石圈类型,首次构建出中国大陆岩石圈岩石学结构模型,展示了中国大陆岩石圈的不均一特征。

On the basis of the geological and geophysical characteristics of continental China, different lithospheric types in various regions are distinguished. In light of the petrological method, model of Earth＇s evolution and relationships between the seismic velocity and rock composition, eighteen petrological structure prisms corresponding with different lithospheric types have been set up. According to the dynarmc properties, five types of lithosphere, i.e. cratonic, orogenic belt, rift, marginal oceanic crust and island-arc, are recognized in continental China. A petrological structure model of lithosphere beneath continental China is constructed and the inhomogeneous characteristics of the lithosphere beneath continental China are displayed for the first time.