化学证据揭示了在那一时段内大气中碳含量发生急剧上升,或许就是因为熔岩渗入并引燃煤层后大量碳进入大气导致的。
Chemical evidence also revealed a sharp up-tick in atmospheric carbon at the time, possibly spewed into the atmosphere when lava infiltrated and cooked pre-existing coal seams.
杂志内的照片展示了夏威夷大岛互为参照的自然景观。岛屿建于海洋底部万古流淌的熔岩流之上。
Photos within the magazine reveal the natural contrasts of Hawaii's Big Island, built over eons by lava flows welling up from the ocean floor.
这座单体火山拥有几乎是世界上最大的完整火山喷口,这个直径约为6.5公里(4英里)的锅型火山口,是当熔岩从火山内腔流过时,上部的岩浆岩坍塌而形成的。
The caldera is about 6.5 kilometers [4 miles] across. It formed following an eruption, when the emptied magma chamber collapsed under the weight of volcanic rock above it.
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