Результаты исследований: Научные публикации в периодических изданиях › статья
Rock control of pedogenic clay mineral formation in a shallow soil from serpentinous dunite in the Polar Urals, Russia. / Lessovaia, S. N.; Dultz, S.; Polekhovsky, Yu.; Krupskaya, V.; Vigasina, M.; Melchakova, L.
в: Applied Clay Science, Том 64, 2012, стр. 4-11.Результаты исследований: Научные публикации в периодических изданиях › статья
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TY - JOUR
T1 - Rock control of pedogenic clay mineral formation in a shallow soil from serpentinous dunite in the Polar Urals, Russia
AU - Lessovaia, S. N.
AU - Dultz, S.
AU - Polekhovsky, Yu.
AU - Krupskaya, V.
AU - Vigasina, M.
AU - Melchakova, L.
PY - 2012
Y1 - 2012
N2 - The transformation of primary and secondary minerals in a recent shallow soil (Haplic Cryosol (Reductaquic)) from a highly weatherable ultrabasic rock (serpentinous dunite) of the mountainous tundra of the Polar Urals was determined. Primary and secondary mineral associations were analyzed in thin sections, by electron microscopy, X-ray diffraction, IR-spectroscopy, and thermal analysis. The susceptibility of the fresh rock for weathering was characterized by the micromorphology of the connective pores. Disintegration of the rock resulted in relatively high amounts of inherited olivine, serpentine, talc, and chlorite in the fine soil. Element release from fresh mineral surfaces exposed also in internal pore systems of rock fragments is a decisive factor for the appearance of secondary minerals in the fine soil. Secondary minerals are two smectites, saponite and nontronite, and vermiculite. Especially the silicates rich in Mg, olivine and serpentine with lower contents in the b1 mm fraction of the soil horizon
AB - The transformation of primary and secondary minerals in a recent shallow soil (Haplic Cryosol (Reductaquic)) from a highly weatherable ultrabasic rock (serpentinous dunite) of the mountainous tundra of the Polar Urals was determined. Primary and secondary mineral associations were analyzed in thin sections, by electron microscopy, X-ray diffraction, IR-spectroscopy, and thermal analysis. The susceptibility of the fresh rock for weathering was characterized by the micromorphology of the connective pores. Disintegration of the rock resulted in relatively high amounts of inherited olivine, serpentine, talc, and chlorite in the fine soil. Element release from fresh mineral surfaces exposed also in internal pore systems of rock fragments is a decisive factor for the appearance of secondary minerals in the fine soil. Secondary minerals are two smectites, saponite and nontronite, and vermiculite. Especially the silicates rich in Mg, olivine and serpentine with lower contents in the b1 mm fraction of the soil horizon
U2 - 10.1016/j.clay.2011.11.002
DO - 10.1016/j.clay.2011.11.002
M3 - Article
VL - 64
SP - 4
EP - 11
JO - Applied Clay Science
JF - Applied Clay Science
SN - 0169-1317
ER -
ID: 5359499