CRYSTALLINITY INDEX FOR SOIL KAOLINS AND ITS RELATION TO PARENT ROCK, CLIMATE AND SOIL MATURITY

被引：79

作者：

HUGHES, JC ^{[1
]}

BROWN, G ^{[1
]}

机构：

[1] ROTHAMSTED EXPTL STN,DEPT SOILS & PLANT NUTR,HARPENDEN AL5 2JQ,HERTFORDSHIRE,ENGLAND

来源：

JOURNAL OF SOIL SCIENCE | 1979年 / 30卷 / 03期

关键词：

D O I：

10.1111/j.1365-2389.1979.tb01009.x

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

To sub‐divide the large group of kaolinitic soil clays a new empirical index of crystallinity was obtained from the X‐ray diffraction patterns of eight standard kaolins. The index used is the ratio of the intensity above background of the peak at 4.46Å to the intensity above background at about 2.43Å (43.2° 2θ CoKα) and ranges from 4.8 for halloysite to 83 for a well‐ordered triclinic kaolinite. For the kaolins from a group of soils from S.W. Nigeria, the ratio lies between 4.3 and 13.7 and can be tentatively related to the presence of weatherable minerals in the soil and/or the length of the dry season. Copyright © 1979, Wiley Blackwell. All rights reserved

引用

页码：557 / 563

页数：7

共 24 条

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