Datong county Volcano Group Composition 300 words.

Datong volcano is a famous volcanic group in eastern China, which consists of two parts: one part was formed in Tertiary, mainly distributed in Zuoyun and Youyu counties; Some of them were formed in Quaternary, mainly distributed in the northern part of Datong Basin. Among them, there are more than 30 volcanoes in this group, which are generally believed to have been formed from the end of Pliocene to the beginning of Pleistocene. According to their distribution characteristics, these volcanoes are divided into four regions: east, south, west and north. Of the four regions, the central and northern regions formed the earliest, followed by the eastern and southern regions, and the western region was the latest.

Volcanoes in the eastern region: refer to six isolated mountains in Sanggan River Basin between Guayuan and shenquansi, such as Naoyoutou, Xiaojiayaotou, Dongpo Mountain, shenquansi, Goose Goose Goose and Daxinzhuang. Among them, the relative height of Xiaojiayaotou volcano is about 100 meters, and the mountain is round and well preserved. However, shenquansi and Goosebumps volcano can't see the crater now.

Southern volcanoes: mainly refer to Dayukou volcano in the south of Sanggan River, Xiyaotou volcano and three nameless volcanoes in the northeast of Xiyaotou.

West Volcano: refers to the volcano distributed in Guayuan and the northern part of Xiping, which is the earliest discovered and the most deeply studied part of Datong Volcano Group. It includes 65,438+05 volcanoes, such as Montenegro, Shuang Shan, Hushan and Langwo Mountain. Generally speaking, it has three characteristics: first, it is conical, mainly composed of pyroclastic rocks; Second, the shape of the mountain is complex and diverse; Third, there are many fetal volcanoes and parasitic volcanoes. Among them, Montenegro is the largest volcano in Datong Volcano Group, and Shuang Shan is located in the center of Datong Volcano Group, so this area is more noticeable.

Volcanoes in the northern region: mainly refer to six volcanoes in the northern part of Datong, including Gushan and southwest of Gushan. Among them, Gushan Mountain is the largest in this area, composed of basalt and shaped like bread. Although the mountain is not high, it is independent of the imperial valley and magnificent.