Минералогические особенности горно-лесных коричневых и горно-коричневых остепненных почв Нахичеванской Автономной Республики

Abstract

The mineralogical compositions of the investigated soils are examined in the article. The characteristic peculiarities of the qualitative and quantities composition of minerals in the mountain–forest brown and mountain–brown steppificated soils are investigated. It is revealed that the main minerals in these soils are montmorillonite which change at 7.5–16.0% on the profile, kaolinite minerals are only found in the low horizons of the mountain–brown steppificated soils and form 12.5–19.6%, illite (hydroslude) in the mountain–brown steppificated soils is met tattle quantity, but in the mountain–forest brown soils their number rises and forms at limits 2.0–1.05%. Minerals are found in the following limits in the studied soils and rocks: d-quartz (SiO2) changes at limits 10.2–20.1% in the mountain–brown steppificated soils. A content of potassic feldspar in the mountain–forest brown soils is very high and changes at limits 11.4–40.8%, hematite (Fe2O3) in comparison with the mountain–forest brown soils in the mountain–brown steppificated soils is higher and changes at limits 2.5–10.0%, volcanic dust in the mountain–forest brown soils is high and changes at limits 10.5–21.0%. In the soil experiments quantity of calcite in the mountain–brown steppificated soils is higher and changes at limits 4.8–16.4%, dolomite in the mountain–brown steppificated soils changes at limits 5.0–5.1%, salt (NaCl) in the mountain–brown steppificated is at limits 2.0–2.1%.