評論
打印
At the end of 2001, an international team of scientists gathered near Chicxulub.
2001年底，一支國際科研小組來到希克蘇魯伯附近。
They used an oil rig to drill down over a kilometre into the heart of the crater.
他們利用石油鉆探機鉆入1公里深處的隕石坑中心。
They extracted hundreds of metres of rock cores,
他們采集了數百米深的巖芯，
most of the rock had been pulverised by the Chicxulub impact, but one section was undamaged.
大部分巖石都因為希克蘇魯伯大碰撞而變得粉碎，但是有一個截面卻沒有遭到破壞。
It lay above the broken rock, so it must have been created after the impact, and just underneath the Iridium layer,
它位于破碎巖石之上，因此它肯定是在碰撞之后形成的，而且剛好是在銥元素層下方，
so the question was how long had this section taken to form?
現在的問題是，這個巖層花了多長時間形成？
If the mysterious rock had been formed slowly, it would support Keller and Wolfgang Stinnesbeck.
如果這些神秘的巖石形成緩慢，那也就證明了Keller和Wolfgang Stinnesbeck的理論。
What we can see here is the impact sediment which is all smashed off the rocks,
我們在這兒看到的是碰撞沉積巖，都是破碎不堪的巖石，
we see bigger pieces and smaller pieces here, but then we find something completely different.
有大塊的，也有小塊的，但是后來我們發現了一些很不一樣的東西。
See this grey rock, this is a limestone, and when I looked at the limestone with my head lens
例如這塊灰色巖石，這是石灰巖，我用放大鏡觀察這塊石灰巖時，
I noticed that the grains which are forming the limestone are very fine,
發現形成這些石灰巖的顆粒非常細小，
so that would show to me that this sediment has been deposited under rather quiet conditions.
因此在我看來，這些沉積巖肯定是在非常平靜的條件下沉積形成的。
