• Mesa
  • Baiyin District

A mesa is an isolated, flat-topped elevation, ridge or hill, which is bounded from all sides by steep escarpments and stands distinctly above a surrounding plain. Mesas characteristically consist of flat-lying soft sedimentary rocks capped by a more resistant layer or layers of harder rock, e.g. shales overlain by sandstones. The resistant layer acts as a caprock that forms the flat summit of a mesa. The caprock can consist of either sedimentary rocks such as sandstone and limestone; dissected lava flows; or a deeply eroded duricrust. Unlike plateau, whose usage does not imply horizontal layers of bedrock, e.g. Tibetan Plateau, the term mesa applies exclusively to the landforms built of flat-lying strata. Instead, flat-topped plateaus are specifically known as tablelands.

Baiyin District belongs to Baiyin City, Gansu Province. Baiyin gets its name because of the mine and because of the enterprise area. Located in central Gansu, western Baiyin City, the middle upper reaches of the Yellow River, located in the northwest edge of the Longxi Loess Plateau, the general trend of topography is high in the northwest and low in the southeast, with an average elevation of 1946.5 meters. It borders Gaolan County, Lanzhou City in the west, the Yellow River in the south, Qingcheng Town in Yuzhong County and Pingbao Township in Jingyuan County, Liuchuan Township in Jingyuan County in the east, and Zhongquan Township in Jingtai County in the north. With a total area of 1372 square kilometers, it has jurisdiction over 5 streets, 3 towns and 2 townships. In 2017, the registered population of Baiyin District was 290381. In 2017, Baiyin District achieved a GDP of 19.957 billion yuan, an increase of 2.6 percent over the same period last year. In July 2019, it was selected as the pilot county (district) of the national intellectual property strong county project.
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