Changsha is located in the middle of China, north of eastern Hunan Province, downstream of Xiangjiang River, west of Changliu Basin, between 27 51'~ 28 40' north latitude and11153' ~14 65448 east longitude. Changsha is the city with the best international image in China (Mainland China), the cultural capital of East Asia and the "media art capital" of the world. Created cultural brands such as "TV to Jun", "Publishing to Jun" and "Animation to Jun".

There are 58 universities, 97 independent scientific research institutions, 52 academicians of the two academies, 14 national engineering technology research centers and 15 national key engineering laboratories in Changsha. There are scientific research achievements such as hybrid rice breeding, "Tianhe" supercomputer and the first 3D sintering printer in China. Changsha is one of the first national historical and cultural cities. After 3,000 years, the city site remains unchanged, and it is known as "the hometown of Qujia", "the famous city of Chu and Han" and "Xiaoxiang bamboo silk".

Introduction to geological characteristics of Changsha

The strata are fully exposed, granite bodies are widely distributed and the geological structure is complex. Various geological and historical strata are exposed in Changsha, and the oldest stratum was formed about 1 100 million years ago. About 600 million years ago, Changsha was still a sea of Wang Yang, but the sea was not deep. After that, the sea gradually withdrew from east to west, and most areas of Liuyang, Changsha and Wangcheng surfaced, becoming the northwest edge of Jiangnan ancient land. About/kloc-0.40 billion years ago, the seawater immersion in Changsha area ended and rose to land.

Due to the influence of crustal movement and geological structure, a banded intermountain depression basin-Chang (Sha) Ping (Jiang) basin was formed. Since Cenozoic, the whole Changping basin has risen to land. About 3.5 million years ago, the third ice age occurred on the earth, and Liuyang preserved the remains of glacial landforms.

Reference to the above content: Baidu Encyclopedia-Changsha City