1·It is at the boundaries between plates that most of Earth's volcanism and earthquake activities occur.
地球上大部分的火山活动和地震活动发生在板块之间的边界处。
2·The hotspot has pushed the spreading ridge up to the surface and supplemented its activities with some extra volcanism on the side.
热点把扩展脊推出海面并且通过一些边上的额外的的火山活动补充其活动。
3·Global Volcanism Program.
全球火山活动计划。
4·Several researchers have speculated that volcanism might have set off extensive coal fires that contributed to the extinction, but no clear evidence had been found - until now.
几位研究人员推测，火山活动可能引发了大面积的煤炭火灾，火灾导致了灭绝事件，但没有发现明确的证据——直到现在。
1·Unlike Oceanic islands that were once part of continental landmasses, islands formed by such geological processes as volcanism contain only plants and animals that could be transported there.
与曾经是大陆性陆地的一部分的海洋岛屿不同，由火山作用等地质过程形成的岛屿只包含可以被运输到那里的动植物。
2·But when massive volcanism delivered more, it changed the amount of phosphorous available, and drove these anoxic events.
但是，当大规模的火山作用向海洋输送了更多磷时，就改变了可用的磷数量，从而导致那些缺氧事件。
3·"Volcanism is important because it represents the pulse of the planets," he added.
“火山作用非常重要，因为它代表着行星的脉搏，”他补充道。
4·The volcanism is strong in Cenozoic and has several periods.
凹陷中新生代火山作用强烈，也具有多期性。
5·Tectonic activities and volcanism in the basin have an influence on hydrocarbon generation of kerogen and its change.
盆地构造活动和火山作用可以促进干酪根的成烃转化。