Abstract: We investigated the control of boundary fault segmentation on architecture of sequence stratigraphy in continental rift basin. Integrating 3D seismic and well data to construct map of displacement along strike on unit of third order sequence stratigraphy and dip angle on fault surface, the segmentation of Xinanzhuang fault(XNZHF) is examined based on geometry of fault surface and kinematics in period of Dongying Formation. XNZHF comprises linked segments and is an important control on hanging wall fold geometry. Synclines form at local displacement maxima, located at the centers of the fault segments, anticlines form at local displacement minima, located where fault segments link. The corrugations of fault surface apparently correlates with displacement variation, local displacement maxima corresponds with high dip angle of fault surface and the minima corresponds with low dip angle. Fault growth is a prime control on accommodation, sediment supply and physiography. High displacement rate and low sediment supply at the center of fault segment lead to predominantly aggradational/retrogradational para-sequence stacking patterns. Whereas low displacement rate and high sediment supply at boundary of fault segments show result in primarily progradational stacking patterns. The segmentation and displacement variation along strike control the stacking patterns inner sequence and is the prime control on the sand and source rock dispersal on the hanging wall of XNZHF.

Key words: rift basin, Nanpu sag, segmentation of boundary fault, sequence stratigraphy, sequence stratigraphy architecture