• Mesa
  • Longchuan County

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.

Longchuan County, under the jurisdiction of Heyuan City, Guangdong Province, is located in the northeast of Guangdong Province, the northeast of Heyuan City, the upper reaches of Dongjiang and Hanjiang River, Xunwu County and Dingnan County of Jiangxi Province to the north, Wuhua County and Xingning City of Meizhou City to the east, Dongyuan County to the south and Heping County to the west. Laolong Town is the county seat. The county is a subtropical monsoon climate, mild climate, Rain Water abundant, sunny. At the end of 2018, the county has a total area of 3081.31 square kilometers and has jurisdiction over 24 towns, 315 villages and 42 neighborhood committees, with a total population of 986600, a permanent population of 713200 and 341000 overseas Chinese. Longchuan County has a long history and there were human activities as early as the Neolithic Age. Longchuan County was founded in 214BC (33 year of Qin Shihuang), which is one of the most ancient counties in China. Old Zhilong
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