Tangshan special

1. Geological structural characteristics: There are many stratigraphic sequences in Tangshan, and Archean and Proterozoic are mainly exposed in the northern mountainous areas; Cambrian and Ordovician are mainly distributed in the two wings of Kaiping syncline; Most of Carboniferous and Permian are hidden in the southern plain. A small amount of Jurassic outcropped in Lianhuayuan and Guantoushan areas of Gan 'an County. The Tertiary was discovered in Xinzhuang-Yinzhuang area south of Qianxi County and buried deep in the south of Xugezhuang-Changning line in Luannan County, Fengnan District. Quaternary system is extremely developed, and its distribution area accounts for about 3/5 of the total area of the city, forming a broad piedmont inclined plain.

2. Climatic characteristics: The climate of Tangshan belongs to warm temperate zone and semi-humid continental monsoon climate. It is windy and rainy in spring, with large evaporation, dry air and drought. The temperature in Tangshan warms up quickly, and thunder can usually be heard in late March. Summer is hot and humid, with concentrated rain, and there are many disastrous weather such as rainstorm, hail, thunderstorm and strong wind.

3. Characteristics of natural resources: There are 70 rivers in * * * of Tangshan City, with surface water resources of 65.438+462 million cubic meters and groundwater resources of 65.438+435 million cubic meters. After deducting double counting, the total water resources is 246.5438+0.6 billion cubic meters, with a per capita of 329 cubic meters.