Tow-Dimensional Depositional Sequence Simulation

Lin Changsong; Xie Xinong; Zhang Yanmei; Lin Jingyan

A quantitative tow-dimensional depositional sequence model has been formulated to simulate the filling process of sedimentary basins. The system consist s of two subsystems: basin subsidence modelling and basin filling simulation, taking into account sea level change, tectonic subsidence, compaction of sediments, flexural isostatic compensation, erosion and sedimentation. Input basin subsidence rate can be derived by backst ripping technique, or be calculated by quantitative forward basin models. Geometric models, combined with diffusion models, have been used in the system to determine depositional surfaces and facies geometry. The system can be used to analysis the controlling processes of sedimentary basins and to predict sequence architecture and facies distribution within basins. The model has been alogrumthed to simulate the sedimentary filling of continental margin basins and shown that the tectonic subsidence rate variation and the amplitude of sea level change have a strong influence on the geometry and depositional style of basin fills.

1. China University of Geosciences, Beijing 100083;

2. China University of Geosciences, Wuhan 430074

Received Date: 1997-05-13

Rev Recd Date: 1997-08-19

Publish Date: 1998-06-10

Key words:

depositional sequence /
computer simulation

Abstract: A quantitative tow-dimensional depositional sequence model has been formulated to simulate the filling process of sedimentary basins. The system consist s of two subsystems: basin subsidence modelling and basin filling simulation, taking into account sea level change, tectonic subsidence, compaction of sediments, flexural isostatic compensation, erosion and sedimentation. Input basin subsidence rate can be derived by backst ripping technique, or be calculated by quantitative forward basin models. Geometric models, combined with diffusion models, have been used in the system to determine depositional surfaces and facies geometry. The system can be used to analysis the controlling processes of sedimentary basins and to predict sequence architecture and facies distribution within basins. The model has been alogrumthed to simulate the sedimentary filling of continental margin basins and shown that the tectonic subsidence rate variation and the amplitude of sea level change have a strong influence on the geometry and depositional style of basin fills.

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Reference (21)

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