100,000 Dashan Mountain starts from Guitai, Qinzhou City, Guangxi Zhuang Autonomous Region in the east and reaches the Sino-Vietnamese border in the west, and is distributed in Qinzhou, Fangcheng, Shangsi, Ningming and other places. The mountain range runs northeast-southwest, with a length of 100 km and a width of 30-40 km, with a total area of 2,600 square kilometers. It is the southernmost mountain range in Guangxi. In Qinzhou, there are 10 million mountains in the northwest. The mountain range comes from Fangcheng Autonomous County of all ethnic groups in the southwest, and stretches for more than 20 kilometers in the territory, just like the Great Wall, forming a natural dividing line with Shangsi and Yongning counties.
The axial strata of Shiwandashan Mountain range are mainly Triassic continental sandstone, mudstone and conglomerate in the north wing, Jurassic sandstone and conglomerate and Indosinian granite porphyry and granite in the south wing. Himalayan movement was influenced by granite intrusion, which flexed and formed overlapping monoclinic mountains. The northwest slope is gentle and the southeast slope is steep. The mountains are majestic and the ridges are obvious. There are two ancient planation planes at an altitude of 700 meters and 500 meters on the hillside, which were formed by the intermittent rise of neotectonic movement.
Brief introduction of 100 thousand mountains and valleys:
1, Mingjiang: It was called water invasion in the Western Han Dynasty and Eastern Jin Dynasty, and green water in the Qing Dynasty. Nianban Mountain, which originates from one hundred thousand mountains, flows through Shangsi County with a flow of134km, a river width of120-150m, a riverbed depth of 2-3m, and a total drop in the county.
2. Dasijiang: Originating from Bai Ji Village, Gongzheng Township, Shangsi County, it belongs to the Shanhe Wan River system. It flows through Shangsi Gong Zheng, Qinzhou Guitai, Dasi Town and other towns, and flows into the mainstream of Maoling River at the old tip of Dasi Town. It has a total length of 69.3 kilometers and a drainage area of 599.2 square kilometers, of which the length of rivers in Qinzhou is 46.7 kilometers and the drainage area is 455.8 square kilometers. The larger secondary tributary is the Guitai River.
3. Pingfu River: Pingfu River, also known as Tuolin River, starts in Wang Pin, flows through Shangsi County at the confluence of Wang Le and Pijiang River, with a flow of 23 kilometers and a rainwater collection area of 568 square kilometers, which is a tributary of Mingjiang River. Pingfu River is formed by the confluence of four tributaries: Wangle River, which originates from Ping Long ditch of 100,000 mountains and is 20 kilometers long.
4. Yan Pinghe; Yan Ping originates from Dioscorea cirrhosa Ridge in one hundred thousand mountains, with a total length of 27.5 kilometers, a rainfall collection area of 1, 7 1 square kilometer, an average annual flow of 6.34 cubic meters per second and a total drop of 66.6 meters. It flows through villages such as Wang Li, Baihe, Guanbai, Kutan, Shangsi, Yan Ping, Paige, Dingjiang and Frye.
The above contents refer to Baidu Encyclopedia-100,000 Mountains.