Study of the mineralogical evolution gives clue to how soils are formed within the specific conditions in a particular site. Different studies indicate that the major soil forming factors on the Santa Cruz Island are climate and parent material. However, presence of various land forms, depressions and ridges, unique micro climates will not allow ignoring the variation in soil properties along the toposequence. Since very few studies have been conducted in soils on Santa Cruz, much is unknown about the pedology of this island. Confirming the presence of volcanic ash as an important parent...