Earth's skin types entisols inceptisols andisols gelisols spodosols alfisols ultisols oxisols histosols mollisols aridisols vertisols entisols details inceptisols details andisols details gelisols details spodosols details alfisols details ultisols details oxisols details histosols details mollisols details aridisols details vertisols details entisols map inceptisols map andisols map gelisols map spodosols map alfisols map ultisols map oxisols map histosols map mollisols map aridisols map vertisols map