Where is Danxia landform distributed?

Danxia landform is mainly distributed in the northwest and southwest of China, the western United States, Central Europe and Australia, among which China is the most widely distributed. In 1928, Feng Jinglan and others discovered Danxia Mountain in Renhua County, northern Guangdong Province, and named the landform here as Danxia landform, and named the red gravel layer that formed Danxia landform as Danxia layer. Since then, many people have expounded its concept.

Danxia landforms are widely distributed in China. At present, 1,5 Danxia landforms have been identified and distributed in 28 provinces (autonomous regions, municipalities directly under the Central Government and special administrative regions). In tropical and subtropical humid areas, temperate humid-semi-humid, semi-arid-arid areas and alpine regions of Qinghai-Tibet Plateau are all distributed.

the lowest altitude can be formed in the coastal zone in the east, and the highest altitude can appear on the Qinghai-Tibet Plateau above 4m. But relatively concentrated in the southeast, southwest and northwest. Except China, it is distributed in Central Europe and Australia, among which China is the most widely distributed.

Extended data:

Reasons for the formation of Danxia landform

The so-called "red bed" in red bed landform refers to the red rock series deposited from Mesozoic Jurassic to Cenozoic Quaternary, which is generally called "red glutenite".

the horizontal tectonic landform refers to a flat highland mainly composed of tertiary thick red glutenite with horizontal or nearly horizontal occurrence, which is flat-topped, steep and isolated and protruding tower-shaped landform due to the comprehensive actions of strong erosion, division, dissolution and gravity collapse.

Danxia landform development started from Himalayan orogeny in the late Tertiary. This movement caused some red strata to tilt and relax folds, and raised the red basin, forming an outflow area.

The flowing water is concentrated in the low-lying area in the middle of the basin and erodes along the vertical joints of the rock strata, forming a deep ditch with two vertical walls, which is called a lane valley. When the flowing water can't completely move away, the colluvium at the foot of the alley-valley cliff forms a colluvium cone with a gentle slope.

Baidu encyclopedia-Danxia landform