Easter Island's volcanic history suggests Earth's mantle behaves quite differently than previously assumed
More information: Yamirka Rojas-Agramonte et al, Zircon xenocrysts from Easter Island (Rapa Nui) reveal hotspot activity ...
Dal4y
Ben Ellis
as well as the plutonism, and show that there are several pulses of metamorphism preserved in these rocks, along with relict ages of the basement rock and xenocrysts.