Characteristics of clear stream geology and landforms

The landforms formed by the erosion of flowing water include valleys and karst landforms.

The thousands of ravines and ravines of the Loess Plateau are the result of the erosion of flowing water. The thick-bedded limestone widely distributed in the Yunnan-Guizhou Plateau and Yangshuo of Guilin in Guangxi Zhuang Autonomous Region is formed by flowing water erosion and chemical dissolution.

Flow-through action includes several erosion and transport deposition.

Erosion 1 Karst landform is widely distributed in the southwest of China Because there is a large amount of limestone distribution in this area, the carbon dioxide in the air fuses with water to form carbonic acid and will continue to dissolve the limestone area The Sichuan Basin used to be a large inland lake Because the lake water continues to dissolve the limestone, the deep cut Wushan cut into the Three Gorges The lake water leaked out to form a basin The current Zhangjiajie and Yunnan stone forests in Hunan are also typical.

2 Loess Plateau China's Loess Plateau covers a vast area, mainly by the strong winter wind of the Asian high pressure to carry and deposit the sand and soil of Mongolia and Xinjiang Most of the Loess Plateau in China is located in the monsoon region, so the summer is rainy and concentrated, heavy rain, due to poor vegetation coverage, loess loose soil, man-made mining to further destroy the loose soil, therefore, with the heavy rain erosion, the formation of runoff, is a typical erosion of flowing water, resulting in the Loess Plateau area of thousands of ravines.

3 River erosion River erosion is more common, and erosion can occur even in areas with good vegetation.

The above is the most common phenomenon of flowing water erosion in China.

Sedimentation 1 delta Because the river is in the plain and the estuary, the small drop or the bend of the river channel can lead to slow flow rate and reduced carrying capacity, and the river will gradually deposit the sediment transported from the upstream to form a delta at the estuary, such as the Yangtze River Delta, the Pearl River Delta, the Yellow River Delta, etc., and if it is deposited in the plain area, it will form a harmful above-ground river, also known as the hanging river, such as the Kaifeng section of the Yellow River, the Jingzhou section of the Yangtze River (also known as Jiuqu ileum), which is very famous in the country.

Handling 1 refers to the phenomenon that the river scours the riverbank and riverbed and takes away the sediment, and any river has this phenomenon, such as the river valley (Fenhe Valley, Weihe Valley) is more serious, such as the Yellow River, because of the Loess Plateau, loose soil, poor vegetation, serious man-made damage, etc., resulting in the saying of "a bowl of river water and half a bowl of mud".

The above are just a few of the manifestations of the action of running water.

River valleys, alluvial fans, etc., are more famous for the Danxia landform.