Sequences of different basins differ considerably in depositional pattern

distribution characteristics.The sequences of foreland basins are mainly dominated by alternation of thrus flexure deformation and unloading

and their distribution is very asymmetric;the sequences in cratonic basins are mainly controlled by eustasy

and coincident in broad extent;the sequeces of inland rift basins are controlled by different scales and different orders of episodic fracture movements

thus resulting in multicycle sequences;sequences of large depressions are similar to those of passive continental margins;those of intermontane basins are related to episodic movement

paleoclimate and source materials;those of piedment fault-depressed basins are related to strike-slip and pull-apart movements.The above mentioned differences are bound to cause considerable differences in types and collocation of source-reservoir-cap rock association.In general

the turning positions between rising and downing processes of the cycles are favourable places for source rooks;the sand bodies formed in semi rising and semi downing cycles are the main reservoirs.