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Iceland is peculiarly volcanic because it is formed by the intersection of a hotspot and a mid-ocean ridge. 因爲冰島是“熱點”和大洋中脊交叉形成的國家，所以多火山。
Hydrothermal vents of this kind are found roughly every 100km (54 nautical miles) along the 65, 000km or so of mid-ocean ridge. 沿著大約65000公裡的洋中脊，大約每隔100公裡（54海裡）都會有此類熱液通道。
This area is considered a "normal" mid-ocean ridge, meaning it exhibits many volcanic features, like seamounts, scientists would expect to find at places like the GSC. 這一區(qū)域被認爲是 “標準的”(normal)大洋中脊，也就是說它具有包括海山在內(nèi)的多種火山地貌，正是科學家們在加拉帕戈斯擴張中心的理想觀測點。