兰州西津村黄土地球化学特征及地质环境分析

ANALYSIS OF CHEMICAL FEATURES AND GEOLOGICAL SURROUNDINGS OF THE EARTH IN XIJIN VILLAGE OF LANZHOU

兰州地区西津村黄土塬具有黄土高原典型的发育特征 通过对西津村黄土沉积特性与地球化学环境分析,系统描述了该区黄土地层剖面及其化学成分和微量元素组份特性,推演了兰州地区第四纪古气候特征和黄土的沉积环境。

There are typical well\|developed characteristics and types of mineral calamity of loess plateau in Xijin village. By analysing the specific property of the loess deposit and chemical surroundings of the earth in this area, the paper describes the section, the chemical composition and trace element of the loess in this area systematically. It also deduces the climatic characteristic and function of the loess in the fourth era in Lanzhou and decides\|the mineral era. Then it discusses the content condition of the meltable salt in loess stratum in different times and gives a qualitative analysis of the change tendency of the trace element on the section of the whole stratum in order to explore the surroundings of loess deposit. It provides theoretical basis for studying the forming mechanism of Chinese loess and preventing mineral calamity in loess area