What city is yutian county from?

Yutian county, which belongs to Tangshan City, Hebei Province, is located in the northeast of Hebei Province, at the westernmost end of Tangshan City, bordering Yanshan Mountain in the north and Bohai Sea in the south. It is an important part of the Bohai Economic Zone. It is bordered by Jixian County in Tianjin in the west and north, Baodi County in Tianjin across the Jiyun Canal in the southwest, Ninghe County in Tianjin in the south and zunhua city in the northeast. The hinterland of Beijing, Tianjin, Tang and Qin enjoys a unique geographical position.

Paleolithic ancestors lived in Yutian, and Wu Zetian changed her name to yutian county. From the first year of Tianbao to the fourth year (742-745), Zunhua City was built in the east of Tiantian County. During the period of Jintaihe (A.D.1201-kloc-0/209), Fengrun County (Fengrun District) was established in the east of the county.

Extended data:

There are two kinds of metallic minerals: iron and lead. Hydrothermal iron mineralization points were found in Huangjiashan, Shangzhuang and Qijiatuan, all of which occurred in Wumishan Formation of Jixian system. They are small in scale (13 ~ 50m long and 0.3m ~ 2m wide) and low in grade, so they cannot be used. An iron cap containing lead-zinc ore is located in Tizishan, Xiaobaishan, in the dolomite fissure of Wumishan Formation in Jixian system, with a pulse width of 15 ~ 20cm and a visual grade of Pb 1 ~ 2%, which is a mineralization point and has no mining value.

Nonmetallic minerals include dolomite, limestone, silica, sepiolite, oilstone, gypsum and marble. There are 8 dolomite deposits, including 2 medium-sized deposits, 4 small-sized deposits and 2 occurrences. The reserves above Grade D are 3 1.3 1.8 million tons, and those above Grade E 1.404 million tons, accounting for 45.368 million tons. The reserve is 4201.23 million tons.

Except Dashanwangzhuang, the eight ore bodies are all located in the third member of Wumishan Formation in Linxian system, and they are layered. Medium-sized ores in Sanletai and Xiangchunyuan are mostly coarse-grained dolomite and micrite dolomite, with gravel belts, all of which have 6 layers, with a single layer thickness of 1 ~ 7. 1 m. Maximum 18m, with total thickness of 45.43m in sanletai mine and 25.83m in xiangchunyuan mine.

Others are small deposits, mostly one layer (only He Xinzhuang and Daquan have two layers), with a thickness of 4 ~ 10 m. The chemicals are magnesium oxide (MgO) 20.8 ~ 2 1.89%, calcium oxide (Cao) 29.64 ~ 30.20%, silicon dioxide (SiO? ) 0.3 ~ 1.74%, mostly high-quality dolomite.