摘要
///The Zhang Stream, Longting Stream and Changyang Stream in Baiyun Mountain of Fu’an City belong to the type of the granitic canyon rivulet. There occurs a multitude of giant and deform rock hollows and stone cisterns in the river valley, which becomes a distinguished marvellous spectacle of the geoscience. The rock hollows and stone cisterns found in the riverbed bedrock and quaywall of the Daiyun Mountain are the channel erosion microtopography developed in the miarolitic alkali syenitic granite in which the all classes of potholes and stone hollows take shape since Pleistocene because of the prolonged erosion of the different hydrodynamical conditions and atmospheric precipitation. The major external power of forming the potholes is the erosion of running water and whirlpool flow and the abration of pebbles and whirlpool.