dra ined , ▁sal ine - s od ic ▁so ils ▁on ▁fan ▁terra ces ▁and ▁re lict ▁bas in ▁flo ors . ▁These ▁so ils ▁formed ▁in ▁all u vi um ▁derived ▁from ▁gran ite , ▁r hy ol ite , ▁and es ite , ▁quart z ite , ▁and ▁some ▁lim estone ▁and ▁bas alt . ▁S lop es ▁generally ▁are ▁ 0 ▁to ▁ 5 ▁percent . ▁The ▁climate ▁is ▁hot ▁and ▁ar id . ▁ ▁See ▁also ▁Ped ology ▁( so il ▁study ) ▁So il ▁types ▁List ▁of ▁U . S . ▁state ▁so ils ▁ ▁External ▁links ▁Casa ▁Grande ▁So il ▁Arizona ▁state ▁soil ▁ ▁Category : P ed ology ▁Category : So il ▁in ▁the ▁United ▁States ▁Category : Ge ology ▁of ▁Arizona ▁Category : Symbol s ▁of ▁Arizona ▁Category : Types ▁of ▁soil <0x0A> </s> ▁Gy ör gy ▁K ul in ▁( N ag ysz al ont a ▁ 2 8 ▁January ▁ 1 9 0 5 ▁– ▁ 2 2 ▁April ▁ 1 9 8 9 ▁Budapest ) ▁was ▁a ▁Hung arian ▁astronom er ▁and ▁discover er ▁of ▁minor ▁plan ets . ▁▁ ▁He ▁discovered ▁ 2 1 ▁astero ids ▁and ▁is ▁a ▁co - dis cover er ▁of ▁the ▁com et ▁C / 1 9 4 2 ▁C 1 ▁ ▁( W hi pp le - B ern as con i - K ul in ). ▁In ▁addition ▁to ▁astronom y ▁he ▁also ▁wrote ▁some ▁science ▁fiction . ▁The ▁astero id ▁ 3