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冰川冻土 ›› 1981, Vol. 3 ›› Issue (2): 52-55.

• 研究论文 • 上一篇    下一篇

电子扫描镜下我国若干冰碛石英砂的表面特征

谢又予1, 崔之久2   

  1. 1. 中国科学院地理研究所;
    2. 北京大学地理系
  • 收稿日期:1980-06-09 出版日期:1982-05-25 发布日期:2012-04-26

SOME SURFACIAL CHARACTERISTICS OF TILL QUARTZ SAND IN CHINA UNDER ELECTRONIC SCANNING MICROSCOPE

Xie Youyu1, Cui Zhijiu2   

  1. 1. Institute of Geography, Academia Sinica;
    2. Department of Geography, Beijing University
  • Received:1980-06-09 Online:1982-05-25 Published:2012-04-26

摘要: 光学显微镜最大可以分辩直径2000(?)的颗粒,但不足以分辩直径小于1毫米的石英砂粒表面详细特征。地质、地理工作者希望能实现利用电子显微镜所具有的高度分辩率的特性来观察形体特征。

Abstract: The quartz sand from the till and debris flow deposits in the mountains of Kunlun Shan and Southeast Xizang was examined under electronic scanning microscope for its external morphological characteristics. Besides the shell-shaped crack, irregular fault block, joint surface, tilting lamina, "step"system, crushed and deformed joint lamina, and secondary changes were found on the quartz sand grains, round deep pits and striae were also discovered on their surface. The characteristics of form surface of quartz sand from till and from debris flow were analized and discerned. Furthermore, international study of quartz sand with electronic scanning microscope was briefly introduced.