A passive margin forms by sedimentation above an ancient rift, now marked by transitional lithosphere. Continental rifting creates new ocean basins. Eventually the continental rift forms a mid-oceanic ridge and the locus of extension moves away from the continent-ocean boundary.
The type of metamorphism that is most likely to occur along the fault line is : Dynamic Metamorphism The dynamic metamorphism usually produced by mechanical forces that will create rocks deformation through strains
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