• Mesa
  • Qinzhou 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.

Qinzhou District belongs to Tianshui City, Gansu Province. Qinzhou District, located in the southeast of Gansu Province, is the seat of Tianshui Municipal Party Committee and Municipal Government. Qinzhou District has jurisdiction over 13 towns and 3 townships, 420 administrative villages, 7 subdistrict offices and 43 community neighborhood committees. The total administrative area of the region is 2442 square kilometers, with a total population of 690000 (2012). In 2011, the region's GDP reached 12 billion yuan, an increase of 20% over the same period last year; investment in fixed assets reached 8.35 billion yuan, an increase of 30% over the same period last year; the added value of industries above scale reached 2.92 billion yuan, an increase of 15.2% over the same period last year; and large-caliber fiscal revenue reached 1.2 billion yuan, an increase of 29% over the same period last year
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