Thallium isotopic evidence for ferromanganese sediments in the mantle source of Hawaiian basalts
Ocean island basalts are generally thought to be the surface expression of mantle plumes, but the nature of the components in the source regions of such mantle plumes is a subject of long-standing debate. The lavas erupted at Hawaii have attracted particular attention, as it has been proposed that coupled186Os and187Os anomalies reflect interaction with the Earth's metallic core1,2. It has recently been suggested, however, that such variations could also result from addition of oceanic...[Show more]
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