Huangyan district, which belongs to Taizhou City, Zhejiang Province, is located in the east-central part of Zhejiang Province and south-central Taizhou City. It is one of the main urban areas of Taizhou and a land transportation hub. Located between east longitude12047' ~12120' and north latitude 28 27' ~ 28 4 1', it belongs to subtropical monsoon climate, which is strongly influenced by warm and humid ocean masses and typhoons, with abundant rainfall and distinct seasons.
Huangyan's hometown is Dongou in Xia, Shang and Zhou Dynasties. Yongning County was established in the second year of the Tang Dynasty (675). In the first year of natural grant (690), Yongning was changed to Huangyan County. 1989 withdrew from the county to set up a city, 1994 withdrew from the city to set up a district. Huangyan district is one of the "Top 100 Industrial Counties and Cities in China", one of the cradles of China's joint-stock cooperative economy, and the hometown of China tangerines and fine products.
geology
The geological evolution of Huangyan area can be roughly divided into four stages: Paleocene-Eocene extension stage, basement fault controlling the development of horst-type fault block structure, Oligocene-Miocene depression subsidence stage, early and middle Oligocene inherited fault block activity, late Miocene structural inversion stage, forming large-scale inversion anticline, NNE-trending and nearly EW-trending caprock fracture, Pliocene-Quaternary regional subsidence stage, and EW-trending fault activity again.
The late Miocene and Pliocene-Quaternary fault activities have an important influence on the migration and accumulation of oil and gas in Huagang Formation. The stratigraphic system in Huangyan area consists of the Pinghu Formation, the Oligocene Huagang Formation, the Miocene Longjing Formation, the Yuquan Formation and the Liulang Formation, the Pliocene Santan Formation and the Quaternary Donghai Group.
Reference to the above content: Baidu Encyclopedia-huangyan district