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The method of fractal simulation and classification of folds is firstly studied here to describe various types of complex fold patterns in quantitative analysis. Based on the characteristics of natural folds with a fractal pattern, the fold patterns are simulated to describe various types of folds quantitatively by means of fractal interpolation. The major factors affecting the fold pattern are elucidated in fractal simulation of folds, i.e. positions of interpolation points (x, y) and the disturbance coefficient d of folds (-10, folds are up-convex. IF d<0, they are down-convex. |d|=0, |d|=0.25 and |d|=0.5 represent three conspicuous turning states. If |D|=0, the points will be joined by a straight line. If |d|=0.25, the points will be joined smoothly. If |d|>0.25, there will be complex secondary folds between the points. If |d| >0.5, there
The method of fractal simulation and classification of folds is the first of the studies do to describe various types of complex folds with a fractal pattern, the fold patterns are simulated to describe various types of folds quantitatively by means of fractal interpolation. The major factors affecting the fold pattern are elucidated in fractal simulation of folds, ie positions of interpolation points (x, y) and the disturbance coefficient d of folds (-1 0, folds are up-convex. If | D | = 0, the points will be joined by a straight line. If | d | = 0.25, the points will be joined by a straight line. If | d | = 0.25, the points will be joined smoothly If | d |> 0.25, there will be be complex secondary folds between the points. I f | d |> 0.5, there