Tagzania is closing

Next March 31st Tagzania will stop working. Be sure to download all your data in your profile view before that date. Thank you for all your support these years.

Tagzania ixtera doa

Datorren martxoak 31an Tagzania itxiko dugu. Ziurtatu zure datu guztiak deskargatzen dituzula zure profiletik egun hori baino lehen. Eskerrik asko urte guzti hauetako babesagatik.

Puruogangri Ice Field 普若岗日冰原

The Puruogangri, the largest modern ice field in the Tibetan Plateau with an area of over 400 km2 in total.在青藏高原中央、普若岗日冰原西侧流石坡地带山麓面上,分布有约100 km2的由戈壁与沙丘组成的地貌,这是世界罕见的、也是我国发现的首例中纬度、高海拔地区冰前沙漠沉积.野外地貌、地层测量和室内样品的粒度、矿物、 14C测年分析等结果表明,其形成时代约为16 ka BP以来;沉积特征在沙丘沉积序列中表现为风成砂夹零星腐殖质层,在戈壁中表现为砾石表面具次生方解石或碳酸钙沉淀层;演化模式为冷直线式;形成条件为以下伏冰碛物为主要砂源,以行星西风环流和高原冬季风引起的地面西风为主要动力,以持续的寒冷半干旱为气候背景;成因主要与冰原西缘冰川作用形成丰富的冰碛物砂源有关;因此,这类沙漠与一般冰缘沙漠以河湖相砂为源具有显著区别,可称为"冰川型沙漠".由于其形成兼与冰原、气候和环流的变化密切相关,所以它是高原腹地全新世气候环境变化的重要记录.

Get Directions to here | Add a new place in this area | Hotels in

Big map | Google Earth KML | OpenStreetMap

changturtle (updated 16 years ago)

lat: 33.9068946838, long: 89.12109375

Embed


Did you see something wrong?, contact Tagzania.

Photos, Videos