青海囊谦地区古近纪盆地丹霞地貌特征及其成因分析

A Study on the Characteristics and Genesis of Danxia Landform in Nangqian Paleogene Basin,Qinghai Province

位于青藏高原东北部的囊谦盆地属于古近纪红层盆地,其中丹霞地貌分布广泛,发育典型,景观组合类型独特而多样,地貌景观资源极为丰富。由于具有相似的构造活动和外动力地质条件等影响,研究区丹霞地貌景观与我国东南地区丹霞地貌具有相似地貌形态特征,而有别于西南区的丹霞地貌景观。文章以青海省玉树州囊谦县周边的古近纪盆地发育的丹霞地貌为研究对象,从丹霞地貌成景系统角度,分析这些丹霞地貌的景观特征与形成机制。

Located in the northeastern Tibet Qinghai plateau, the Nangqian basin is a paleogene red beds basin, where there are widely-developed typical Danxia landforms that are of unique, diverse and abundant types. Due to similar effect of the tectonic activity and exogenetic force setting, the Danxia landforms in Nangqian basin are sim- ilar with those in the southeast China and different from those in the southwest China. In this paper, the danxia landforms of Nangqian Paleogene red beds basin in Yushu city of Qinhai province have been analyzed on the land- scape features and formation mechanism from the angle of the landscape genesis system.