柴达木西冷湖雅丹地质公园景观特征及成因分析

Analysis of Landscape Features and Genesis of Yardang Geopark in Lenghu Lake, Qaidamu

中国柴达木盆地西北部的地貌类型主要分为风蚀雅丹地貌和风积地貌,其中雅丹地貌是一种典型的风蚀地貌,以中小型雅丹为主,具有垅槽、洼地、残丘、风蚀柱、壁龛等形态,风积地貌为沙丘、沙垅。雅丹地貌沉积物的形成环境复杂,通过研究证实雅丹地貌的主要是由河湖相沉积物形成。雅丹的形成主要为四个阶段:风化破坏岩体面层阶段、雅丹地貌初步形成阶段、成形阶段、消失阶段。

The geomorphologic types in the northwest of qaidam basin are mainly wind-eroded yardang geomorphology and aeolian geomorphology,yardang landform is a typical wind-erosion landform, mainly small and medium-sized yardang, it has furrows, depressions, residual hills, wind erosion columns, niches and other forms, and the aeolian landforms are dunes and sand furrows. The formation environment of Yadan landform sediments is complex. Through research, it is confirmed that Yadan landform is mainly formed by river and lake sediments. The formation of Yadan is mainly divided into four stages: weathering and destruction of rock surface,preliminary formation of Yadan landform, formation and disappearance.