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St. Helena hotspot 
Summary
The St. Helena hotspot is a volcanic hotspot located in the southern Atlantic Ocean. It is responsible for the island of St. Helena and the St. Helena Seamount chain. It is one of the oldest known hotspots on Earth, which began to produce basaltic lava about 145 million years ago.[1]
References edit
- ^ Mantle plumes and their record in earth history
16°S 6°W / 16°S 6°W