The fold has more than one hinges, which is the result of uncoaxal superimposed fold, underwent B type fold in early time and A type fold in late time.

• 它具有不止一个方位褶皱枢纽，表征非共轴叠加褶皱形态，经历了早期B形和晚期A形褶皱演化过程，最终形成迄今鲜有报道，但却实际广泛存在。