• Mesa
  • MaAnshan

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.

Maanshan, referred to as "Ma", is a prefecture-level city in Anhui Province, located in the eastern part of Anhui Province and the confluence area of Jiangsu and Anhui Province. it is a member city of Hefei Metropolitan area, Nanjing Metropolitan area, member cities of Yangtze River Delta Urban agglomeration, cities along Yangtze River Economic Belt and Wanjiang City Belt to undertake industrial transfer demonstration area; it has jurisdiction over 3 districts and 3 counties with a total area of 4049 square kilometers. In 2018, the resident population was 2.337 million. Ma'anshan, which straddles the Yangtze River and borders Nanjing, has been known as "Jinling barrier and Jiankang lock key" since ancient times. As early as the six dynasties, many famous princes and virtuous scholars lingered in Maanshan, leaving many monuments and cultural relics. It has successively won the national civilized cities, national public cultural service standardization construction pilot cities, national science and technology pilot cities, southern Anhui international tourism culture demonstration zone, and the first batch of countries.
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