Forms of relief modeling Geological agents shape the relief by transporting materials from the highest areas, which erode and round, to lower areas where sediments are deposited. The main forms of relief modeling are: Due to the geological action of liquid water: Modeling produced by wild or stream waters. Torrential modeling. Modeling river. Karst modeling. Littoral modeling. Due to the geological action of ice: Glacier modeling. Due to the geological action of the wind: Wind modeling.