• Mesa
  • Gannan Tibetan Autonomous Prefecture

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.

Gannan Tibetan Autonomous Prefecture is an autonomous prefecture under the jurisdiction of Gansu Province, located in the southwest of Gansu Province, located in the northeast edge of the Qinghai-Tibet Plateau and the western part of the Loess Plateau, with high terrain in the northwest and low in the southeast, and has the characteristics of continental seasonal climate. The city has a total area of 38521 square kilometers and has jurisdiction over seven counties and one city, with a total population of 742300 in 2017. In Gannan Tibetan Autonomous Prefecture, there are Gahai-Zecha two national nature reserves, Lianhuashan and Yeliguan National Forest Park, as well as dozens of beautiful natural scenic spots such as Sangke grassland, the first song of the Yellow River, Dayugou and so on. There are 121 Tibetan Buddhist monasteries, including Xiahe Labrang Temple, Zhuoni Zen Temple and Luqu Langmu Monastery, which are protected by national cultural relics. There are more than ten revolutionary historical relics, such as the natural insurance Lazikou and the ruins of the Russian conference, which have the experience of the long March of the Red Army.
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Travel Asks In Gannan Tibetan Autonomous Prefecture