Title	A standard method for determining volcanic glass content in Andisols
Author	Eden, D. N.
Permanent Link (URL)	http://doi.org/10.7931/DL1-DLRSR-2
Publisher	DSIR Land Resources
Contributors	Yoshinaga, N.; Kimble, J. M.; Huscher, T. L.; Samson, S.; Shoji, S.; Yamada, I.
Date	1992
Series	DSIR Land Resources scientific report ; no. 2
ISBN	urn:ISBN:0-477-02635-4
ISSN	urn:ISSN:1170-5965
DOI	doi:10.7931/DL1-DLRSR-2
Subject	Soil mineralogy Analysis Andosols Volcanic ash, tuff, etc.
Abstract	A standard method is outlined for determining volcanic glass content in Andisols. A prototype of the standard method was tested on six samples by laboratories in Japan, the United States and New Zealand. There was good agreement on the glass content for one sample but varying amounts of glass were recorded in the others. Differences in volcanic glass contents were due to conscious departures from the standard method, inadequate chemical pretreatment, varying interpretations of what should be counted as glass, and identification problems. There was, however, a consensus on how five out of the six soils sampled should be classified according to the Andisol proposal of 1988. Modifications to the method are proposed which should allow different operators to achieve more consistent results.
Extent	28 pages
Description	Incorporating analytical data and comments from: N. Yoshinaga, Department of Agricultural Chemistry, Ehime University, Matsuyama, Japan; J.M. Kimble, T.L. Huscher and S. Samson, USDA Soil Conservation Service, Midwest National Technical Center, Lincoln, Nebraska, USA; S. Shoji and I. Yamada, Faculty of Agriculture, Tohoku University, Sendai, Japan.
Type	Report
Format	application/pdf
Rights	@Crown Copyright 1992. This work is licensed under the Creative Commons Attribution-NonCommercial 3.0 New Zealand (CC BY-NC 3.0 NZ) Licence, see http://creativecommons.org/licenses/by-nc/3.0/nz/
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A standard method for determining volcanic glass content in Andisols

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