magmatic

"Global warming melts ice and this can influence magmatic systems," he told Reuters.

“全球气候变暖会导致冰雪融化，从而影响岩浆活动系统。” 他告诉路透记者说。

Seamounts form from magmatic eruptions, which occur when lava seeps up to the crust through the partially-melted sub-layer, known as the asthenosphere, in the mantle.

火山岩透过地幔中部份熔融的软流层渗入到地壳，岩浆喷发，海山由此形成。