THE PEDOGENIC DEVELOPMENT AND CLASSIFICATION OF SOIL DEVELOPED ON MOUNT HASANDAG'S VOLCANIC MATERIALS IN A SEMI-ARID ENVIRONMENT

In comparison with Andisols from humid regions, very little information is available regarding the volcanic soils of semi-arid climates. The objectives of this research were to discuss the extent to which these soils meet the requirements of real Andisols, as defined by Soil Taxonomy and to investigate the physical and chemical properties, as well as to define the weathering processes and pedogenic products, of the soils formed over the volcanic materials of Mt. Hasandag in a semi -arid environment.