no

Nowdays we can easily take for a fact the existance of ancient supercontinent named Pangea.If one just takes a glance at borderlines of modern continents one can conclude,without further argument,that they were once conjoined indeed.But the process of development and the process of disintegration of Pangea still inflames bitter arguments. New concept in global tectonics endorses two-layered lithosphere: Primary Layer: One that covers all of the Earths surface,and Secondary Layer: One that exists on top of Primery layer and consists of Earths continents (originated as Pangea). Therefor,covering aproximetly one quarter of Earths surface