TY - JOUR

T1 - Clay minerals in weakly podzolised soils of abraded moraine plains in northwestern Russia

AU - Gagarina, E.I.

AU - Sokolova, T.A.

AU - Sukhacheva, E.Yu.

PY - 2014

Y1 - 2014

N2 - Two profiles of weakly podzolised, well drained soils of abraded moraine plains in northwestern Rissia are studied. The profiles are located at the edges and on the upper parts of slopes. They are developed upon two-layered rocks: stony sand - sandy loam deposite of complex genesis, underlain with reddish brown bouldery moraine loam. This determines a clear differentiation of the profile in terms of particle size distribution and bulk chemical composition, and also in terms of the mineralogical composition of the clay fraction. In the lower deposit, a subfraction of water-dispersed clay dominates: dioctahedral illite, kaolonote with admixture of disorderd mixed lattice illite-smectites with domination of illite packets. In the upper deposit, the fraction of water-aggregated silt increases; clay fraction contains larger amounts of kaolonote, as well as dioctahedral illite, ordered and disordered mixed lattice illite-smectite and illite-vermiculite minerals, chlorite, and, probably, vermiculite.

AB - Two profiles of weakly podzolised, well drained soils of abraded moraine plains in northwestern Rissia are studied. The profiles are located at the edges and on the upper parts of slopes. They are developed upon two-layered rocks: stony sand - sandy loam deposite of complex genesis, underlain with reddish brown bouldery moraine loam. This determines a clear differentiation of the profile in terms of particle size distribution and bulk chemical composition, and also in terms of the mineralogical composition of the clay fraction. In the lower deposit, a subfraction of water-dispersed clay dominates: dioctahedral illite, kaolonote with admixture of disorderd mixed lattice illite-smectites with domination of illite packets. In the upper deposit, the fraction of water-aggregated silt increases; clay fraction contains larger amounts of kaolonote, as well as dioctahedral illite, ordered and disordered mixed lattice illite-smectite and illite-vermiculite minerals, chlorite, and, probably, vermiculite.

KW - clay minerals

KW - transformation of layered silicates

KW - soils of glacial landscapes

KW - abraded moraine plains

U2 - 10.3103/S0147687414040048

DO - 10.3103/S0147687414040048

M3 - Article

VL - 69

SP - 147

EP - 155

JO - MOSCOW UNIVERSITY SOIL SCIENCE BULLETIN

JF - MOSCOW UNIVERSITY SOIL SCIENCE BULLETIN

SN - 0147-6874

IS - 4

ER -