除开大部分人觉得阿拉瓜尼亚实在太小,不足以成为元凶以外,这对大灭绝来说会是个很好的解释。
The Chicxulub crater in Mexico, which did for the dinosaurs, is 180km in diameter, and itmay have been paired with an even bigger impact in the Indian Ocean.
导致恐龙灭绝的墨西哥希克苏鲁伯陨石坑,其直径有180公里,而且它可能与同时期在印度洋产生的另一个更大的碰撞共同作用,从而导致白垩纪大灭绝。
Dr Tohver, however, has an answer to this criticism.
面对质疑,托瓦尔博士有着合理的解释。
His latest paper, just published inPalaeogeography, Palaeoclimatology, Palaeoecology,describes the rock in the area in which Araguainha resides.
他最近在古地理学,古气候学,古生态学杂志上发表的一片文章详细描述了阿拉瓜尼亚附近的岩石性质。
After an extensive geological survey, he and his team discovered that a sizeable amount ofthis rock is oil shale.
经过了广泛的地质学研究调查后,他和他的团队发现这些岩石很多都是油页岩,
Any hydrocarbons in the crater would certainly have been vaporised.
这说明所有的碳氢化合物已经被汽化。
More intriguingly, the researchers calculate that the impact would have generatedthousands of earthquakes of up to magnitude 9.9 for hundreds of kilometres around.
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