How big is Zhangjiakou?

Zhangjiakou covers an area of 36,800 square kilometers.

Zhangjiakou, also known as "Bird" and "Wucheng", is a prefecture-level city under the jurisdiction of Hebei Province, located between east longitude11350 ′ ~1630 ′ and north latitude 3930 ′ ~ 4210 ′. The city is 289.2 kilometers long from north to south and 2 16.2 kilometers wide from east to west, with a total area of 36,800 square kilometers. ?

Zhangjiakou is a prefecture-level city under the jurisdiction of Hebei Province, located in the northwest of Hebei Province, at the junction of Beijing, Hebei, Shanxi and Mongolia. It is the intersection of Beijing-Tianjin-Hebei (Bohai Rim) economic circle and Hebei-Shanxi-Mongolia (Outer Great Wall) economic circle. It is the central city in the northwest of Hebei Province and the transportation hub connecting Beijing and Tianjin and communicating with Shanxi and Mongolia.

Extended data:

Zhangjiakou landform:

Zhangjiakou city is high in the northwest and low in the southeast, and the yinshan mountains runs through the middle, which divides Zhangjiakou city into two parts: the upper dam and the lower dam. Yanghe and Sanggan rivers in the territory cross the east and west of Zhangjiakou City and flow into Guanting Reservoir. Zhangjiakou belongs to Inner Mongolia-Daxinganling fold system and China-Korea paraplatform, which are two first-class structural units.

Inner Mongolia-Daxinganling fold system is a long-term geosyncline from Proterozoic to the end of Paleozoic, which is only distributed in the northern part of Kangbao, with a small range and sporadic exposure. The development process of China-Korea paraplatform structure can be clearly divided into three stages, reflecting the evolution law of active-stable-active crust.

There are 2 deep faults and 7 large faults in Zhangjiakou city. Magmatic rocks are relatively developed, with large distribution area and complete rock types. Magmatic rocks * * * have 9 cycles, each cycle starts with extrusive rocks and ends with medium-deep intrusive rocks. There are ultrabasic rocks, basic rocks, intermediate rock, alkaline rocks and acid rocks, and the occurrence of bedrock, dikes, rock plants, rock walls and rock caps is complete.

The strata in Zhangjiakou City are exposed from Archaean to Cenozoic except Upper Ordovician of Lower Paleozoic, Silurian of Upper Paleozoic, Devonian of Mesozoic, Carboniferous, Upper Permian, Triassic and Upper Cretaceous, with a total thickness of 35,978 ~ 51.866m..

The types of stratum rocks exposed in Zhangjiakou City are also complete, including Archean metamorphic rocks, Proterozoic, Paleozoic and Cenozoic sedimentary rocks, contact metamorphic rocks and local dynamic metamorphic rocks around intrusions, and migmatites formed by hypermetamorphism. Magmatic rocks are mainly Mesozoic and Cenozoic extrusive rocks, granites and dikes with different lithology in Lvliang, Hercynian and Yanshan periods.

Baidu encyclopedia-Zhangjiakou