Editing Supercontinent (section)

=== Series ===
The first model theorizes that at least two separate supercontinents existed comprising [[Vaalbara]] and [[Kenorland]], with Kenorland comprising [[Superior craton|Superia]] and [[Sclavia craton|Sclavia]]. These parts of [[Neoarchean]] age broke off at ~2480 and {{nobr|2312 Ma}}, and portions of them later collided to form [[Columbia (supercontinent)|Nuna]] (Northern Europe and North America). Nuna continued to develop during the [[Mesoproterozoic]], primarily by lateral [[Accretion (geology)|accretion]] of juvenile arcs, and in {{nobr|~1000 Ma}} Nuna collided with other land masses, forming [[Rodinia]].<ref name="bradley" /> Between ~825 and {{nobr|750 Ma}} Rodinia broke apart.<ref name="donnadieu">Donnadieu, Yannick et al. "A 'Snowball Earth' Climate Triggered by Continental Break-Up Through Changes in Runoff." Nature, 428 (2004): 303–306.</ref> However, before completely breaking up, some fragments of Rodinia had already come together to form [[Gondwana]] by {{nobr|~608 Ma}}. Pangaea formed through the collision of Gondwana, [[Laurasia]] ([[Laurentia]] and [[Baltica]]), and [[Siberia]].