摘要
中昆仑山北坡黄土主要分布于和田至于田一带中山区,过去限于条件多为路线考察,并认为是亚砂土堆积.笔者对此经实地考察和采样分析,初步认为中昆仑山北坡黄土堆积以粗粉砂(0.05-0.01mm)和极细砂(0.1-0.05mm)为主,物质来源主要是塔里木盆地南部地区沙丘,其形成环境较为干旱,风力对黄土形成起决定作用。
The Loess of middle Kunlun Mountain is mainly dispersed over the mountain areawith elevation of 3000-4000 meters. It is tendencily decreasing with the rising of the clcva-tion. the components of heavy minerals in loess have little bearing with the depth of sam-pling and the elevation. According to analysis and determination to the components andcharacteristics of minerals in the loess with polarizing microscope and size analysis andmicrostructure characteristic of the loess. we get the following initial result; The mineral inthe loess in northside of middle Kunlun Mountain mainly stem from the south dunes ofTarim Basin. The forming environment is arid. the forming time is the later period of thelater-Pleistocene, and wind power is played a decisive role on forming of loess.
出处
《干旱区地理》
CSCD
北大核心
1991年第4期23-30,共8页
Arid Land Geography
