Climate
is a major influence on weathering processes affecting soil parent materials.
Important contributors to soil formation in arid and semi-arid climatic zones
are the diurnal cycles of solar heating and cooling that cause mechanical or
physical disintegration of rock or parent materials, and wind-blown sands that
score and abrade exposed rock surfaces. By using the Soil Taxonomy
classification system, the initial aim of this study was to carry out a
pedological evaluation for four soil profiles, classified as Xeric Haplocalcid
and Xeric Haplocambid, formed on different parent materials (limestone, marl
and old alluvial deposits) under the same conditions, including topography and
vegetation, in a semiarid region. The second stage was the exploration of the
similarities and differences in the classifications resulting from either the
pedogenic processes, or from other factors, by determining the degree of soil
weathering using geochemical data. To achieve this, soil samples were collected
from the horizons to investigate their mineralogical, geochemical and
physiochemical properties. The study also considered other features, such as
the pedogenic evolution of soils, through the use of weathering indices, namely
the Chemical Index of Alteration (CIA), Chemical Index of Weathering (CIW),
Base/R2O3 Ratio, Weathering Index of Parker (WIP) and Plagioclase Index of
Alteration (PIA). The results clearly showed that soil development at the
Altınova State Farm at Konya in the Central Anatolia region of Turkey is due to
slow pr ogressive weathering. For this case, the main indicators are secondary
calcium carbonate illuviation and weak structural development with a weathering
ratio of silicon to aluminium greater than two in all profiles.
Alteration index geochemical evolution soil formation dry region
Birincil Dil | İngilizce |
---|---|
Bölüm | Articles |
Yazarlar | |
Yayımlanma Tarihi | 1 Ocak 2019 |
Yayımlandığı Sayı | Yıl 2019 Cilt: 8 Sayı: 1 |