It's coincident with the tectonic plate, the Juan de Fuca tectonic plate.

And there are features that look tectonic.

No life without tectonic activity, without volcanic activity.

The tectonic plates of world politics were shifting.

Or any evidence of fracture propagation within the tectonic plates.

This is closely related to tectonic and volcanic activity of planets.

I'm going to layer in on top of this the tectonic plates.

It shifted the Earth's tectonic plates, sped up the planet's rotation and literally shortened the length of the day.

So, that gives you an idea of the tectonic events or volcanic events which have happened on that planet.

But this conclusion would ignore a tectonic shift taking place in Egypt far from the cameras in Tahrir Square.

Four times I did work with National Geographic, making tectonic plate measurements twice, I went with NASA doing remote sensing devices.

The age of the ocean, the tectonic plates, gives rise to a totally new phenomenon that we have heard about in this conference.

In recent years, with a method called VLBI that uses quasar observations, and by GPS we have begun to understand the absolute movement of tectonic plates.

And as these tectonic plates are spreading apart, magma, lava is coming up and filling those gaps, and you're looking land new land being created right before your eyes.

In plate tectonic theory, we knew that if you had plates collide, it made sense they would crush into one another, you would thicken the crust, you'd uplift it.