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Petit-spot lava fields off the central Chile trench induced by plate flexure
hpetit-spot Chile trench alkali-basalt Nazca plate Juan Fernández hotspot
2017/4/11
In 2009, petit-spot submarine volcanoes were discovered off the oceanward slope of the central Chile trench, offshore
from Valparaiso, Chile, at around 33°S. Ar–Ar dating of mugearite and alkali-basa...