Also, there is speculation based on the rift margin spatial arrangements of Laurentia, that at some time during the breakup, the Slave and Superior cratons were not part of the supercontinent Kenorland, but, by then may have been two different Neoarchaean landmasses (supercratons) on opposite ends of a very large Kenorland.
Inoltre, ipotesi basate sulla disposizione spaziale del margine di Laurentia fanno ritenere che, durante la scissione, due suoi componenti, i cratoni Slave e Superiore, non facessero parte della Kenorlandia, ma formavano due diverse masse terrestri neoarcheane ubicate ai capi opposti del supercontinente.