论文部分内容阅读
近三年来笔者曾在六盘山东西广大地区內进行过路綫考察及重点工作。在工作中发現六盘山东部及西部的黃土层有所不同,現敘述如下: 本文所述范围如图1所示(見图1)。文內所指黄土,是过去文献中所指的馬蓝黄土及紅色土。根据刘东生先生的考察,又划成新黄土(馬蓝黄土)及老黄土(紅色土)。現把六盘山东部及西部黃土层的分布、厚度、岩性、古地形、基岩分区概述如下: 一、六盘山以东的黄土层在晉西一带,新黄土Q_(111)~-分布很广,如在大宁、永和、石楼、中阻、离山,向北直到偏关,
In the recent three years, the author conducted route inspection and key work in the vast area of Liupan Mountain. At work, it is found that the loess layers in the eastern and western parts of Liupan Mountains are different. The description is as follows: The scope of this paper is shown in Figure 1 (see Figure 1). The term loess referred to in the text refers to Malan loess and red earth as referred to in the literature. According to Mr. Liu Dongsheng’s investigation, he was also divided into new loess (Malan loess) and old loess (red soil). The distribution, thickness, lithology, palaeogeomorphology and bedrock division of the loess layer in the eastern and western parts of the Liupan Mountains are summarized as follows: I. Loess layer east of the Liupan Mountain In the area of western Shanxi, the Q 111 distribution Very wide, such as in Daning, Yonghe, stone buildings, resistance, mountain, north until the partial off,