梅花山多期次的地壳运动和岩浆活动，使4.3亿年前形成的花岗岩发生了改变，岩石中的长石、石英（粒状矿物）和云母（片状矿物）等发生了定向排列。这类岩石主要分布在步云、四堡、培田古村一带。

The granite formed 430 million years ago has been changed by the multi-stage crustal movements and magmatism in Meihuashan Mountain, and the feldspar, quartz (granular minerals) and mica (schistose minerals) in the rocks have been orientated in certain direction. These rocks are mainly distributed in Buyun, Sibao and Peitian Ancient Village.