• Mesa
  • Chenghai 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.

Chenghai District is under the jurisdiction of Shantou City, Guangdong Province. it is located in the east of Guangdong Province, at the mouth of Hanjiang Delta, Raoping County of Chaozhou City in the northeast, Chaozhou City in the northwest, Longhu District of Shantou City in the southwest, and Nanao County in the southeast. The geographical coordinates are between longitude 116 °54, latitude 23 °23, east-west width 22 km, north-south length 27.85 km, and total area 378.35 square kilometers. By the end of 2017, Chenghai District had jurisdiction over 8 towns and 3 streets, with 137 village committees and 47 community neighborhood committees, with a registered population of 797000. Mainly Han nationality, there are 43 ethnic minorities, most of which are Zhuang, Miao and Buyi. It has always been an important transportation hub in eastern Guangdong, southwestern Fujian and southern Jiangxi.
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