Final answer:
Allophanic soils in New Zealand are often related to regions with volcanic history. They are most commonly found in the central part of the North Island, especially around Auckland, and in parts of the Southern Alps on the South Island.
Step-by-step explanation:
Allophanic Soils in New Zealand are typically found in regions with a history of volcanic activity, as these soils are formed from volcanic glass and ash. New Zealand's North Island, particularly in the central part, exhibits rugged terrains with several volcanic mountains.
This suggests that regions like the central North Island, including the areas surrounding the city of Auckland and the central volcanic plateau, are likely places where one might find allophanic soils. Similarly, the South Island may also contain these soils, especially in parts of the Southern Alps where volcanic activity was present in the geological past. These mountain ranges and highlands provide the necessary conditions for the formation of allophanic soils, created through weathering processes of volcanic materials.