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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...
Petit-spot volcanism: A new type of volcanic zone discovered near a trench
petit-spot volcano Pacific Plate volatiles basalt
2017/4/12
One extremely young volcano (0.05–1 Ma) and other young volcanoes (1.8, 4.2, 6.0, and 8.5 Ma) composed of strongly
alkaline magma were recently discovered on the abyssal plain of the Early Cretaceous...