Micromorphological and analytical studies of the fine matrix of an Australian humus iron podzol
作者:
A. R. MILNES,
V. C. FARMER,
期刊:
Journal of Soil Science
(WILEY Available online 1987)
卷期:
Volume 38,
issue 4
页码: 593-605
ISSN:0022-4588
年代: 1987
DOI:10.1111/j.1365-2389.1987.tb02157.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
SUMMARYDetailed micromorphological observations and associated electron probe microanalyses are used to examine the proposition that kaolinite and gibbsite in the B horizon of a humus iron podzol could arise by transformation of allophanic deposits. The B horizon of this podzol is highly complex. In the upper B horizon, this complexity is due to alternating episodes of the influx of organic matter and the deposition of allophanic material; evidence for the separate deposition of allophane and organic matter is presented. Material within the B horizon that has gibbsiporphyric fabric appears to have arisen by crystallization of gibbsite from aluminium‐rich gels deposited before the main influx of allophanic material; there is no convincing evidence that allophanic material has transformed to kaolinite or gibbsit
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