• Mesa
  • Tianjiaan 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.

Tianjiaan District, which belongs to Huainan City, Anhui Province, is located in the east of Huainan City, bordering Datong District in the east, Xiejiaji District in the south, Bagongshan District in the west and Panji District in the north. With a total area of more than 251 square kilometers, it is the central city of Huainan City. As of December 2014, Tianjiaan District has jurisdiction over 3 towns, 2 townships, 9 streets, 79 communities and 40 villages. At the end of 2012, the total population of Tianjiaan District was 539000. In 2012, Tianjiaan District achieved a GDP of 19.493 billion yuan, an increase of 12.1% (comparable price) over 2011. The famous scenic spots in Tianjiaan District are the National AAAA Scenic spot-Longhu Park.
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