ELASTIC MECHANICS APPROACH OF HELANSHAN NNE TRENDING REVERSED S-SHAPED STRUCTURE

The reversed "S"-shaped structure consists of series of NNE-trending folds and faults,which are mutually parallel and en echelon arranged.The component structures are mostly expressed as compress-shear elements,with sinistral motion predominated.They were only qualitatively described previously.This article,however,gives a mathematical-mechanical model for its formation.