an average rate of , although Mount Hampton and its southern neighbour Mount Cumming were simultaneously active 10 million years ago. Last parasitic eruptions took place around 11.4 million years ago and the youngest radiometric dates are 8.3 million years. As at other volcanoes of Marie Byrd Land, the parasitic activity at Mount Hampton occurred after a long period of dormancy. However, the presence around the caldera rim of snow-covered inactive high ice towers indicate that the mountain is geothermally active and may have erupted during the Holocene. Later research suggested that the ice towers were actually formed by wind-driven erosion of snow and ice. There is no evidence of geothermal processes and seismic activity recorded at the volcano may be due to volcano-tectonic processes or due to ice movement. See also List of volcanoes in Antarctica Notes Sources Polygenetic shield volcanoes Volcanoes of Marie Byrd Land Miocene shield volcanoes Executive Committee Range