Abstract
A numerical finite difference model is employed to reconstruct the time/temperature history of sediments in basins formed by extension, in which crustal thinning by stretching as well as the effects associated with sedimentation and compaction are taken into account. Two extreme cases of basins were investigated to identify the scale of this mechanism: the Gulf of Lion illustrates a case of a young basin, in which the average sedimentation rate is high (620 m/Ma), and the Viking graben in the North Sea offers a case of a basin formed in the Triassic, but where average sedimentation rate is much less (37 m/Ma). In the former, the sediments absorb 30% of the surface heat flow, while in the latter the effect is only 10%.
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