地理研究

地理研究 ›› 1996, Vol. 15 ›› Issue (1): 11-21.doi: 10.11821/yj1996010002

• 论文 • 上一篇    下一篇

根据砾石风化圈厚度估算地貌年龄*

李保俊, 杨景春, 李有利, 谭利华, 段烽军, 张叶春   

  1. 北京大学城市与环境学系 北京 100871
  • 收稿日期:1994-11-18 修回日期:1995-10-16 出版日期:1996-03-15 发布日期:1996-03-15
  • 基金资助:
    * 国家自然科学基金

ESTIMATING AGES OF LANDFORMS BY ANALYSING ROCK-WEATHERING RINDS

Li Baojun, Yang Jingchun, Li Youli, Tan Lihua, Duan Fengjun, Zhang Yechun   

  1. Department of Geography, Peking university, Beijing 100871
  • Received:1994-11-18 Revised:1995-10-16 Online:1996-03-15 Published:1996-03-15

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摘要： 对砾石风化与时间关系的定量研究表明,二者关系是非线性的。实事上,由于风化残余物对风化过程的抑制作用,大部分砾石的风化速率随时间减小,有的与时间呈指数关系,这样,便可以根据砾石风化圈厚度估算地貌年龄。该方法自六十年代开始兴起,经过几十年的实践,已日趋成熟。近来我们在我国西部河西走廊中段进行了这方面研究。本文系统介绍了该方法的研究状况。

关键词: 砾石风化圈, 地貌年龄, 研究回顾

Abstract: Quantitative studies of the relation between weathering and time suggest that the rates of most weathering processes decrease with time. Some weathering processes appear to conform to exponential function of time.Based on this theory,we can estimate ags of landforms based on the analysis of rock-weathering rinds.This relative-dating method has been used for several decades since 1966.Recent studies of weathering-rinds on sandstones in the middle of Hexi Corridor in western China suggest this method is applicable.The authors have reviewed the development of this technique.

Key words: Rock-weathering rinds, Ages of landforms, Review

PACS: 

  • P931.2