The Danxia landform (Chinese: 丹霞地貌; pinyin: dānxiá dìmào) refers to various landscapes found in southeast and southwest China that “consist of a red bed characterized by steep cliffs”. It is a unique type of petrographic geomorphology found in China. Danxia landform is formed from red-colored sandstones and conglomerates of largely Cretaceous age. The landforms look very much like karst topography that forms in areas underlain by limestones, but since the rocks that form Danxia are sandstones and conglomerates, they have been called “pseudo-karst” landforms. Danxia landforms cover several provinces in southeast China. Taining County, Fujian Province, has very good examples of “young” danxia landforms wherein deep, narrow valleys have been formed. As the landform gets older, valleys widen and one gets isolated towers and ridges.
The Danxia landform is named after Mount Danxia, one of the most famous examples of the Danxia landform.
A very peculiar feature of Danxia landscape is the development of numerous caves of various sizes and shapes. The caves tend to be shallow and isolated, unlike true karst terrain where caves tend to form deep, interconnecting networks.
In 2010, several Danxia landscapes in southern China, with a general name of “China Danxia”, were inscribed as a World Heritage Site.
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