Sentence examples for upper horizon from inspiring English sources
They are characterized by an upper horizon leached of iron and aluminum compounds, humus, and clay.
Glaciotectonics involves structural deformations of the upper horizon of the lithosphere caused by glacial stresses.
Some of the drier heath and grassland tundras overlie Arctic brown soils, which have a dark-brown upper horizon with gray and yellowish brown lower horizons.
The samples used were taken from the National Soils Inventory of Scotland and included topsoil samples taken either from the upper horizon or bulked from the top 20 cm.
A number of 187 samples were collected from the upper horizon (0 30 cm depth) of soils located in different parts of the region, covering a wide range of parent materials, climatic conditions and land use.
The upper horizon determined by tillage and reaching to approx. 75 cm had highest values of dissolved organic carbon, P and K and was characterized by Proteobacteria and Bacteroidetes.
Downward leaching caused decalcification of the upper horizons and clay movement in the profile.
The strongest modifications are observed in the upper horizons, which are in contact with the lava.
The same minerals constitute the upper horizons, but in distinct concentrations.
The horizon develops over centuries as percolating water from ample, but seasonal, precipitation facilitates the translocation (migration) of material from upper horizons.
In both soil profiles from France the pedogenic alteration of magnetic carriers is limited to a slight conversion of magnetites to maghemites in the upper horizons.
