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Changsha, also known as Xingcheng, is a prefecture-level city, provincial capital and megacity under the jurisdiction of Hunan Province. It is an important central city in the middle reaches of the Yangtze River and a member city of Changsha-Zhuzhou-Xiangtan Metropolitan Area approved by the State Council. It is a national experimental zone for comprehensive reform of two-oriented society, an important national grain production base, an important node city in the middle reaches of the Yangtze River and the Yangtze River Economic Belt, a comprehensive transportation hub and a national logistics hub.

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 of China (Mainland China), the cultural capital of East Asia, and the media and art capital of the world. It has created cultural brands such as TV Xiang, publishing Xiang and animation Xiang.

geologic feature

The geological characteristics of Changsha are: the strata are completely exposed, the 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 long (sand) flat (river) 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