New GSA Bulletin articles published online ahead of print in October miragenews.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from miragenews.com Daily Mail and Mail on Sunday newspapers.
seafloor spreading, caused by an upwelling of magma, has led to episodes of global warming in the geologic past. the spread rate has slowed down in last 19 million years, but could gather momentum