From the ESCONI Yahoo Group, Dave Carlson posts:
Ancient Source of Earth's Biggest Eruptions Found
See http://news. discovery. com/earth/ ancient-earth- volcanoes- 110728.html
Dave
Researchers believe that several of the largest volcanic eruptions in Earth's history were fueled by magma from a primitive reservoir in the mantle that has remained unchanged for 4.5 billion years, a remnant of the material that formed the early Earth...
