• Mesa
  • YiYang 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.

Yiyang, located in the northeast of Jiangxi Province, in the middle reaches of Xinjiang, is located in Shangrao City. The county is 27 kilometers wide from east to west and 76 kilometers from north to south, with a total area of 1593 square kilometers. There are 10 towns, 5 townships and 2 streets with a registered population of 425600. The built-up area of the county is 13.5 square kilometers, with a resident population of more than 115000. Jurisdiction over 9 towns, 5 townships and 1 subdistrict office. The hometown of revolutionary martyr Fang Zhimin. The topography of Yiyang County is high in the north and south and low in the middle, forming the Yiyang basin. The rivers in the territory belong to the Xinjiang River and Raohe River systems. It belongs to the humid climate of the subtropics.
Airport In YiYang County - Shangrao Sanqingshan Airport
Shangrao Sanqingshan Airport (Shangrao Sanqingshan Airport, IATA: SQD, ICAO: ZSSR), located in Houmentang at the junction of Zunqiao Township, Zaotou Town, Guangxin District, Shangrao City, Jiangxi Province, and Maojialing, Xinzhou District, Shangrao City, from the center of Shangrao With a straight-line distance of 8 kilometers, it is a 4C-level feeder airport and the seventh civil airport in Jiangxi Province.
Shangrao Sanqingshan Airport was built on July 8, 2012 and officially opened to navigation on May 28, 2017.
According to comprehensive information in May 2017, Shangrao Sanqingshan Airport covers an area of ​​2,243 acres, with a total investment of about 800 million yuan. The runway is 2,400 meters long and 45 meters wide, with 6 seats.  
In 2019, the passenger throughput of Shangrao Sanqingshan Airport was 500,156; the cargo and mail throughput was 153.8 tons; the number of takeoffs and landings was 5,982; ranking 144th, 181st, and 154th in China respectively.  
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