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RE: Geology of Iceland - Part 2: The Iceland hotspot
Very nice summary! I really like the final figure as it gives some indication of the rate of motion for the hot spot. It appears to have slowed over the past 30 million years as it crossed the Mid-Atlantic Ridge - I suppose the perfect geologic storm has allowed this fascinating island to exist.
Yes, the Atlantic mid ocean ridge is a slow spreading ridge. Its counterpart in the Pacific ocean spreads up to ten times faster. So it makes sense that the "plume locations" are closer together since the ocean opening.