裂缝喷发;
The island is huge fissure eruption of adjacent formation volcanic island.
各岛是从洋底巨大裂隙喷发形成的火山岛。
Using radiometric dating methods, Sugden determined that the ash settled into the fissure after a volcanic eruption 8.1 million years ago.
用辐射测量鉴定年代的方法,萨格登测定那些灰烬是810万年前火山爆发后沉积在石缝中的。
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