Foundation Seamounts
Series of seamounts in the southern Pacific Ocean / From Wikipedia, the free encyclopedia
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Foundation Seamounts are a series of seamounts in the southern Pacific Ocean. Discovered in 1992, these seamounts form a 1,350 kilometres (840 mi) long chain which starts from the Pacific-Antarctic Ridge. Some of these seamounts may have once emerged from the ocean.
Foundation Seamounts | |
---|---|
South Pacific Ocean | |
Location | |
Location | South Pacific Ocean |
Coordinates | 35°S 120°W[1] |
Geology | |
Age of rock | Miocene-Pleistocene |
History | |
Discovery date | 1992 |
The Foundation Seamounts were probably formed by a now-weakening mantle plume called the Foundation hotspot that is located close to the Pacific-Antarctic Ridge. It is possible that this hotspot generated additional volcanoes, such as the Ngatemato and Taukina seamounts farther west. The oldest volcanism on the Foundation Seamounts occurred 21 million years ago, while the youngest volcanism appears to be hydrothermal venting and the eruption of a lava flow between 1997 and 2001 where the Foundation Seamounts intersect the Pacific-Antarctic Ridge.