The relationships between the southern Italy pedoclimatic environment features, the soil properties, and the composition of the soil clay fraction were investigated. Representative Entisols from either Volturno River (pedon V37) or Sibari (pedon S90) River alluvial plains were collected. Both soils exhibited vertic features, indicating the presence of swelling clay minerals. However, the X-ray diffraction (XRD) analysis provided evidence for difference in the mineralogical composition of the clay fractions. The comparison among the XRD patterns of V37 samples ascertained occurrence of smectite. Differently, chlorite minerals with expansible component were identified by comparing XRD patterns for S90 samples. In both cases, "open' illite and kaolinite were also recognized.
Relationships between pedogenetic features and clay mineralogy in Entisols from two alluvial plains of Southern Italy.
BONIFACIO, Eleonora
1992-01-01
Abstract
The relationships between the southern Italy pedoclimatic environment features, the soil properties, and the composition of the soil clay fraction were investigated. Representative Entisols from either Volturno River (pedon V37) or Sibari (pedon S90) River alluvial plains were collected. Both soils exhibited vertic features, indicating the presence of swelling clay minerals. However, the X-ray diffraction (XRD) analysis provided evidence for difference in the mineralogical composition of the clay fractions. The comparison among the XRD patterns of V37 samples ascertained occurrence of smectite. Differently, chlorite minerals with expansible component were identified by comparing XRD patterns for S90 samples. In both cases, "open' illite and kaolinite were also recognized.
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