摘要
On the basis of geophysical analyses, the crust structure of Northeast China app ears to be three layers in section and to be three abnormal zones horizontally, which extend at NNE-NE direction. Mesozoic era was an important period to the c hanging of tectonic settings and geodynamic mechanism. Deep faults activated and volcanoes exploded violently in Mesozoic era. Moreo ver, a number of sedimentary basins associated with mountain sets in the region formed at that time. The main tectonic framework in the region displays three NN E-NE strike zones which are composed of mountains of volcanic rocks, sedimentar y basins and deep faults of Mesozoic respectively. The formation and evolution of them were controlled by crustal or lithospheric structure.
On the basis of geophysical analyses, the crust structure of Northeast China app ears to be three layers in section and to be three abnormal zones horizontally, which extend at NNE-NE direction. Mesozoic era was an important period to the c hanging of tectonic settings and geodynamic mechanism. Deep faults activated and volcanoes exploded violently in Mesozoic era. Moreo ver, a number of sedimentary basins associated with mountain sets in the region formed at that time. The main tectonic framework in the region displays three NN E-NE strike zones which are composed of mountains of volcanic rocks, sedimentar y basins and deep faults of Mesozoic respectively. The formation and evolution of them were controlled by crustal or lithospheric structure.
