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。

Planet size matters when it comes to the internal heat needed to sustain geologic activity.

经过计算，行星需要有足够大质量内部才会有足够地热而形成各种地质活动。

Geologic processes buried and shifted the shoreline footprints to the cave's ceiling, 500 meters deep.

地质过程埋葬了这些脚印，并将脚印从海岸线转移到洞穴500米深处的顶部。

Megalodon, fossils are found in the kind of geologic deposits that form pretty close to shore.

能在离海岸非常近的地质沉淀物中，发现巨齿鲨的化石。

And as a result, Mexico City is trapped in a vicious geologic cycle.

结果，墨西哥城陷入了地质上的恶性循环。

Ancient ruins and artifacts only take us back a few thousand years, geologic records only about 2 million.

古代遗迹和手工制品只能带我们回到几千年前，地质记录也只能到约 200 万年前。

But scientists have also found lots of soot in the geologic layers deposited immediately after the asteroid impact.

但科学家们也在小行星撞击后立刻沉积的地质层中发现了大量煤烟。

We do understand that the dominant geologic process that affected Mercury, or at least Mercury's surface is impact cratering.

我们知道，水星的地质演化中陨石撞击坑是主要的影响。

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。