CHARACTERISTICS OF SOME TANGANYIKA SOILS

CHARACTERISTICS OF SOME TANGANYIKA SOILS
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坦噶尼喀部分土壤的特征

DOI:
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发表时间:
1957
期刊:
影响因子:
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通讯作者:
I. Stephen
I. Stephen
中科院分区:
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文献类型:
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作者:
A. Muir;B. Anderson;I. Stephen

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总结 对坦噶尼喀两个地区的一系列土壤进行了矿物学研究。它们主要来源于斜长角闪岩,但只有一小部分更耐腐蚀的铵硅酸盐矿物存在于土壤中。红壤土的粘粒(<1.4μ)以高岭石为主,而排水较差的灰色土壤则以无序高岭石为主。粘土的其他成分是氧化铁和少量的伊利石。在风化带中,苍白的土壤含有中等数量的蒙脱石,其中一些持续存在于土壤中。姆布加和黑山谷土壤含有蒙脱石或伊利石,其次是高岭土。
Summary A series of soils from two areas of Tanganyika have been studied mineralogically. They are derived in the main from amphibolite, but only a small proportion of the more resistant ahminosilicate minerals survive in the soil. The clays (<1.4μ) of the red loams are characterized by a predominance of kaolinite, whereas the more poorly drained grey soils have a disordered kaolin. Other components of the clays are iron oxides and small amounts of illite. The pallid soils contain moderate amounts of montmorillonite in the weathering zone, some of which persists into the soil. The mbuga and black valley soils contain montmorillonite or iliite, with subordinate kaolin.