 The geological evolution of Ceres was dependent on the heat sources available during and after its formation : friction from <unk> <unk> , and decay of various <unk> ( possibly including short @-@ lived isotopes such as the <unk> <unk> aluminium @-@ 26 ) . These are thought to have been sufficient to allow Ceres to differentiate into a rocky core and icy mantle soon after its formation . This process may have caused resurfacing by water <unk> and <unk> , <unk> older geological features . Due to its small size , Ceres would have cooled early in its existence , causing all geological resurfacing processes to cease . Any ice on the surface would have gradually <unk> , leaving behind various hydrated minerals like clay minerals and carbonates . 
