Submit. Australia's soil is composed of several different types, each distinguished by its consistency, primary materials, surrounding environment and climate. The Australian soil-classification system is specifically formulated to differentiate between the many types of dry soil found on the continent.ubmit. Australia's soil is composed of several different types, each distinguished by its consistency, primary materials, surrounding environment and climate. The Australian soil-classification system is specifically formulated to differentiate between the many types of dry soil found on the continent.