CLAY MINERALOGY OF A DYSTRANDEPT AND A HAPLAQUOD FROM NORTHLAND, NEW ZEALAND
スポンサーリンク
概要
- 論文の詳細を見る
Two soil samples (Ap1 and Bw3 horizons) from a Dystrandept (Papakauri) developed on basaltic scoria and two samples (Bh1 and Bs2 horizons) from a Haplaquod (One Tree Point) on dune sands, Northland, New Zealand were analysed for their clay mineral composition by a combination of methods. Absence of allophane was confirmed in the Papakauri Dystrandept. Instead, hydrous alumina and allophane-like constituents contributed to the "andic" nature of the soil. Predominance of allophane in the Bs2 horizon clay of the One Tree Point Haplaquod, but existence of lower amounts of this constituent (20% at most) in the Bh1 horizon clay was interpreted as an indication that the continued supply of the complexing organic matter from the overlying horizons suppresses the formation of allophane. The abundance of volcanic glass in the fine sand from the Haplaquod indicated that the major parent materials were finely comminuted volcanic ejecta which primarily contributed to the formation of the non-crystalline clay constituents in the soil.
- 社団法人日本土壌肥料学会の論文
著者
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MIZOTA Chitoshi
Faculty of Agriculture, Iwate University
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Mizota Chitoshi
Faculty Of Agriculture Kyushu University
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Mizota Chitoshi
Faculty Of Agricultuer Iwate University
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