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Does the lower mantle correlate with the upper mantle? Do ridges look like superplume boundaries?

Does the lower mantle correlate with the upper mantle? Do ridges look like superplume boundaries?. STATISTICS ~100% of hotspots fall in LVAs of the upper mantle, mostly those associated with ridges, & in regions of extension.

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Does the lower mantle correlate with the upper mantle? Do ridges look like superplume boundaries?

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  1. Does the lower mantle correlate with the upper mantle? Do ridges look like superplume boundaries?

  2. STATISTICS ~100% of hotspots fall in LVAs of the upper mantle, mostly those associated with ridges, & in regions of extension Only ~3 hotspots are not near yellow/red. All LIPs backtrack to red.

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