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How wide are the dikes in the sheeted-dike layer?
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oceanic crust
A cross section of Earth's outer layers, from the crust through the lower mantle.
In the context of oceanic crust geology, the dikes found within the sheeted-dike layer are approximately 1 metre (3 feet) wide. These subvertical structures serve as the plumbing system for transporting magma to the seafloor and are characterized by their tendency to abut one another, forming a sheeted arrangement.1