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根据最近研究的结果,岩石的破裂多导源於X型扭面,此等扭面所夹之锐角恒对压力方向。又岩石软流所造成之结构,亦可由单组扭面(S面)或双组扭面(S面)表示,此等S面所夹之锐角,恒对流动的方向。
According to the results of recent studies, the rupture of rocks originates mainly from the X-shaped kink, and the acute angle between these kinks is constant over the pressure direction. The structure caused by the soft rock flow can also be expressed by a single set of twisted surface (S surface) or double set twisted surface (S surface). The acute angle between these S surfaces and the constant flow direction.