1,500,000 BP t0 500,000BP

1,500,000 BP to 500,000,BP

 1,300,000 BP: Henry's Fork Caldera.Yellowstone hotspot, Mesa Falls Tuff, Idaho, US. Ejecta volume 2809 km3

1,25,000 BP: Super volcano. Valles Caldera. Jemez volcanic field. New Mexico, USA. Two eruptions 1,25 and 1.61 million years ago. Ejecta volume 600 km3.