Features of the mineralogical composition of coarse fractions and their correlation with the genesis and properties of MSU's Zvenigorod biostation’s soils
Abstract
The study of the mineralogical composition of sand (0,25-0,05 mm) and coarse silt (0,05-0,01 mm) fractions revealed a significant lithological heterogeneity of soil forming material on the territory of the Zvenigorod biostation. The predominance of ore minerals in the heavy fractions (up to 42% of the grains) and, to a lesser extent, hornblende and biotite, explains the ironing (significant presence of iron oxides, hydroxides) of the profiles and the brown color of sandy loam soils. This feature, along with the insignificant presence of the clay fraction, admit us to classify texturally undifferentiated soils as ferric-metamorphic soils, and more differentiated - as eluvial soils.
Received: 09/10/2019
Accepted: 09/18/2019
Accepted date: 03/30/2020
Keywords: weakly differentiated soils; coarse fraction minerals; metamorphic ironing
Available in the on-line version with: 30.03.2020
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