And the final part of the model shows that lava has filled the crater and flowed beyond the edges of the crater 模拟的最后阶段显示熔岩灌满了陨石坑，甚至漫出陨石坑的边缘。 and the original crater structure, we can see the...
In a conventional view of an impact, we have a high speed asteroid which hits the earth's crust, 按照传统的大碰撞观点，一颗小行星高速撞上地壳 and makes a crater instantaneously which is very deep. 立即形成一个很深的撞击...
The asteroid that hit the earth at the time of the dinosaur extinction was at least 10km diameter. 撞击地球导致恐龙灭绝的小行星直径至少是10公里。 The Permian mass extinction is even more severe, 二叠纪生物大灭绝更加严重...
When an asteroid or comet that large hits the earth, 小行星或彗星猛烈撞击地球的威力， it's the equivalent of a billion atomic bombs going off at the same time in the same place. 相当于10亿枚原子弹在同一时间同一地点爆炸...
It's like a giant tape measure, dividing an entire mountain into a series of 23,000 year divisions. 整座山峰宛若巨大的卷尺，每个岩层刻度代表了2.3万年的时光。 Rampino then fitted the layer of rock containing the evidence of...
The Permian rocks lie just below the next geological period, the Triassic. 二叠纪岩层的上方自然是下一个地质年代，三叠纪。 This is the Permian/Triassic boundary, the boundary between the Permian rocks below us and the Triassic r...
In 1998, the search for clues took American geologist Mike Rampino to the Alps. 1998年，美国地质学家Mike Rampino前往阿尔卑斯山寻找线索。 It's one of the only places in Europe where there are Permian fossils. 它是欧洲为数不多...
The geological record shows that when world temperatures rise abruptly by 4/5 ℃, many species will die, 地质记录显示，当全球温度突然上升4-5℃时，很多物种都会灭绝， but he could also see there was no evidence that such an...
It seemed as though Courtillot must have found the cause of the extinction. 由此看来，Courtillot已找到了引起大灭绝的原因。 Here was a truly massive destructive event that had happened at exactly the right time. 这里的确发生过毁...
Using the evidence from Laki, Courtillot now built a model of how the Siberian Traps might have destroyed the world. 利用拉基的证据，Courtillot建立了一个模型解释西伯利亚地盾如何摧毁整个世界。 First, there would have be...
