The Danxia Landform is made up of terrestrial red clastic rocks and characterized by red walls and red cliffs.
The slopes of Danxia Landform are related with a sub-horizontal stratification of three types, which are given in descending order as follows: ① The top slope controlled by sub-horizontal bedding plane. ② The steep-faced slope controlled by vertical joints. ③ The gentle colluvial slope controlled by the angle of internal friction of the colluvial rock blocks.
The above-mentioned three types of slopes characterized by “flat top”,”steep face”, and ”gentle piedmont”are the basic and simple types of slope featuring the Danxia Landform.