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.
Anda City, Heilongjiang Province under the jurisdiction of county-level cities, Suihua City escrow. Anda, from the Manchu language, Mongolian language means "friend", Manchu language means "guest", but also has the meaning of good health and good health. Anda is known as & quot; Bull City & quot;. Anda City is located in the hinterland of Songnen Plain in the southwest of Heilongjiang Province, between 124 °53 min east longitude and 47 °01 'north latitude. It is 120km south from the provincial capital Harbin and 160km north to & quot; Crane City & quot; Qiqihar, bordering Daqing, a world famous oil city, and Qinggang, Lanxi, Zhaodong, Zhaozhou and Lindian. It is located in the prime area of the Hadaqi economic belt and is the node city in the Hadaqi industrial corridor. The area of the whole city is 3586 square meters.