Most active divergentplate boundariesoccur between oceanic plates and exist as mid-oceanic ridges. The Mid-Atlantic Ridge, for example, is a massive underwater mountain range that runs along the center of the Atlantic Ocean. It marks the location where the North American and Eurasian plates are ...
(Supplementary Fig.S4g). With the exception of BIF, the observed sequence of basalt–chert–shale–BIF ± limestone is analogous to a typical Phanerozoic ocean plate lithostratigraphic assemblage recording migration of oceanic crust from the spreading ridge to the trench25. Within the Eastern ...