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You can find evidence of the devastation this caused in an unlikely location,
你可以在一个人们难以想象的地方找到这次事件的证据
the Dolomites,
多洛米蒂山区
a jagged range of mountains on the border of northern Italy and Austria.
这是位于意大利和奥地利北部边境的崎岖山峦
Millions of years ago an ocean covered this whole region.
几百万年前这里被一片海洋覆盖着
It was squeezed out of existence by the land around it
因为周围的陆地而被挤没了
which forced the seabed to rise up creating these mountains.
陆地造成海床升高造成了这些山峦
As the seabed rose,
随着海床升高
it brought the remains of these dead marine creatures with it.
它就附着了这些死亡的海底生物
This layer of black rock can be found all around the world.
这层黑岩石可以在全世界找到
It shows that life in the oceans
这说明海洋中的生物
was utterly devastated by the collapse of the ocean conveyor.
完全因为大洋输送带失灵而消失
Once the conveyor had stopped, oxygen was no longer carried down
一旦大洋输送带停止氧气就无法
into the deep sea from the surface.
从海洋表面被带到海底
So, as oxygen disappeared,
所以氧气消失了
the marine life which relied on it died out.
赖以生存的海洋生物也死光了
This lack of oxygen, known as anoxia,
缺少氧气，也就是所谓的缺氧症
explains all the death in the ocean, but it doesn't explain
可以解释海洋生物的死亡但是无法解释
why the extinction spread onto the land.
为什么陆地上的生物也都灭绝了
We know that it did because the remains of millions of land animals
我们知道这点是因为在全世界找到了
have been found across the world.
几百万陆地动物的尸体
But the link between Land and sea isn't clear.
但是海洋和陆地的联系还不是很清楚
