In geologic time, a million years is recent history.

在地质学角度看来，一百万年前属于近代历史。

Yes, in theory, in geologic time, it will be renewable.

从理论上讲，在地质变化上来看，它会是可再生的。

It's made up of individual large sections or plates that move and collide over vast stretches of geologic time.

它是由独立的大型部分或是板块在漫长的地质时间中移动以及碰撞组成的。

Cheap fossil energy, concentrated by geologic time and pressure in seams of coal or pools of oil, changed all that.

经过地质时间和压力的凝缩，富集于煤层和油田中的廉价化石能源改变了这一切。

Most simply, it's a unit of geologic time.

最简单地说，它是一个地质时间单位。

In geologic time. Now, there are some real debunkers of this.

在地质年代。现在，有一些真正的揭穿者。

First, let’s talk about the history of geologic time itself.

首先，让我们谈谈地质 时间本身的历史。

As we end this module on geologic time here's another chance to interact with the geologic time scale.

当我们结束这个关于地质时间的模块时，这是另一个与地质时间尺度互动的机会。

Thus, this is an ideal place to look for such geologic time capsules of past life.

因此，这是寻找前世地质时间胶囊的理想场所。

Thanks for joining me for this epic -- or ee pok -- journey through geologic time.

感谢您加入我的这个史诗般的 - 或 ee pok - 穿越地质时间的旅程。

But only for a couple million years -- the blink of an eye in geologic time.

但只持续了几百万年—— 地质时代的一眨眼。

So, as a descriptive term, " living fossil" doesn't seem very useful, at least on smaller geologic time scales.

因此，作为一个描述性术语， “活化石” 似乎并不是很有用，至少在较小的地质时间尺度上是这样。

If we were to observe the Earth moving backwards through geologic time, it might look something like this.

如果我们要观察地球通过地质时间向后移动，它可能看起来像这样。

We don't have many fossil outcrops from certain points in geologic time, so we know less about dinosaurs from those times.

在地质时代的某些时间点， 我们没有很多化石露头，因此我们对那个时代的恐龙知之甚少。

The carbon remains trapped there until those animals die and their structures break down, which happens on huge, very slow, geologic time scales.

碳一直被困在那里， 直到那些动物死亡并且它们的结构崩溃，这发生在巨大的、非常缓慢的地质时间尺度上。

Wegener thought that there had actually been only one continent for most of geologic time and that the giant continent had fragmented in the late Triassic Period.

魏格纳认为，在地质时期的大部分时间里，实际上只有一块大陆，而这块巨大的大陆在晚三叠纪时期分裂了。

Although we can't observe extinct dinosaurs breeding with one another, we can observe if they lived in the same area and at the same geologic time.

虽然我们无法观察到已灭绝的恐龙相互交配，但我们可以观察到它们是否生活在同一地区和同一地质时代。

As I tracked the history of the carbon cycle through geologic time to present day, most of the students were slumped over, dozing or looking at their phones.

当我追踪从地质时代到今天的碳循环历史时，大多数学生都瘫倒在地、打瞌睡或看手机。

So sediment is transported and then deposited and it forms layers on the Earth ’ s surface over time. We examine these layers to learn about different geologic time periods including when they began and ended.

因此沉积物被运输然后沉积下来，随着时间的推移在地球表面形成层。我们检查这些层以了解不同的地质时期，包括它们开始和结束的时间。