Nasa said: “A geothermal heat source called a mantle plume lies deep below ... heat source isn't a new or increasing threat to the West Antarctic ice sheet, it may help explain why the ice ...

It's hard to explain why the hotspot moved at this rate, but Jiang and colleagues argue "the most likely scenario is that the mantle plume was captured by the northward-migrating Indian-Antarctic ...

Instead, they appear in the middle of ocean plates, fueled by columns of rising hot rock called mantle plumes. Mantle plumes ... have been pushed under the Antarctic Peninsula.

This shallow flow aligns with geochemical evidence of plume-derived signatures in the basin’s northern volcanic zones. The study further identifies divergent mantle flow regimes: west-east ...