Method for simulating the deposition of a sedimentary sequence in a basin

A method for forming by simulation a reference map of a spatial distribution of a sediment supply, according to a composition thereof, in a sedimentary basin during a sedimentary deposition sequence, comprising:

• providing an initial map with a current thickness of sedimentary layers formed by interpretation of data resulting from seismic prospecting surveys and a thickness of the sedimentary layers formed at any time during a sequence being determined by linear time interpolation between thicknesses of the sedimentary layers at a beginning and at an end of the sequence;
• gathering data relative to a location and a composition of the sediment supply at boundaries of the sedimentary basin and a value of diffusion coefficients characterizing transportation of sediments to the sedimentary basin on a basis of measurements and interpretations;
• and
• applying the data to a stationary diffusive model using diffusive transport equations to determine the reference map and a topography of a land surface of the sedimentary basin, at a beginning and at an end of the sequence.