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沉积盆地的下伏地壳类型,决定沉积盆地在整个演化过程中的物理格局、稳定性、构造格式及沉积条件和环境。因而,一旦沉积物沉积下来,就记录了盆地的构造历史。这种地层资料可用来正确展示大陆型地壳、大洋型地壳及过渡型地壳演化的概念性成因模型。这里提出一套描绘各类地壳成因的假设性模型,以便与地球物理资料进行比较和检验。
The underlying crust types in the sedimentary basin determine the physical pattern, stability, tectonic format, sedimentary conditions and environment of the sedimentary basin throughout its evolution. Thus, once sediments have been deposited, the tectonic history of the basin has been recorded. This stratum data can be used to correctly demonstrate the conceptual genesis models of continental crust, oceanic crust and transitional crustal evolution. Here, a hypothetical model depicting the causes of various types of crust is proposed for comparison with geophysical data.