Asia
Afghanistan, Indonesia, Japan, Russia
Japan, Oman
Afrika
Kenya
South Africa
Eropah
Greece, Hungary, Iceland, Italy, Turkey
France, Germany, Italy
lain
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pulau hawaii, mid-Atlantik ridge
Amerika Utara
Canada, Mexico, USA
Canada, USA
Amerika Selatan
Argentina, Chili, Ekuador, peru
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deposito di oceania benua