Also, based on Milanković's model, the continental blocks sink into their underlying "fluidal" base, and slide around, 'aiming to achieve' isostatic equilibrium.
Columbia was assembled along global-scale 2.0-1.8 Ga collisional orogens and contained almost all of Earth's continental blocks.
In geology, a supercontinent is the assembly of most or all of the Earth's continental blocks or cratons to form a single large landmass.
The orogenic belts present on continental blocks are classified into three different categories and have implications of interpreting geologic bodies.
Strike-slip faults were responsible for moving mostly undeformed continental blocks eastward, away from the main convergent zone.
Eventually the subduction zone is converted into a suture zone as the two continental blocks are welded together.
From about ca. 1190-980 Ma (the actual timing varies by locality) two separate continental blocks collided with Laurentia.
These were formed from sand deposition, the sediment for which was derived from erosion of the igneous rocks and rifting continental blocks.
Suturing of one continental block onto another usually occurs because a subduction zone exists beneath one of the blocks.
A large continental block existed with oceanic crust subducting underneath it.