#$%^&*AU2020101481A420200827.pdf#####Abstract The present invention discloses a calculation method for multi-stage rift subsidence process and deep thermal evolution, which comprises the following steps: in the initial rifting stage, defining the boundary condition before stretching according to the original condition of the lithosphere; in each of the subsequent stages, using the final state of the previous stage as the initial condition to determine the state of the lithosphere before stretching; determining the structure of the lithosphere at the end of the previous stage when calculating the subsidence and thermal evolution of the next rifting stage. The calculation method for multi-stage rift subsidence process and deep thermal evolution in the present invention can describe the multi-stage rift subsidence process of a basin more accurately, is of great significance for correctly understanding and quantitatively evaluating the dynamic process of a multi-stage rift basin, and can predict various basin processes including deep heat flow.
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