The age of this charcoal, determined by an accelerator mass spectrometer radiocarbon method, is plus or minus 36 years before present.
The basic outlines of the geology that produced the Hawaiian Islands are pretty well known. The current islands sit on top of a plume of hot material from the mantle that works its way through the oceanic crust, building massive volcanoes that gradually ride the Pacific plate away from the source of magma. But many of the details of the system are not well understood.
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