This paper demonstrates that a combined study, based on geomorphological, stratigraphical and tectonic analysis, allows precise understanding of the structure and evolution of an active fold. The aims of the study are to document : 1) the structures
that accommodate lateral propagation on an active fold; 2) the orientation of the principal stress-axis inferred from fault population analysis in the pretectonic Toukoshan Formation and syntectonic deposits; and 3) the tectonic geomorphology of the Pakuashan