And as the sandstone weathers, new grains break free.

Some rocks and some finches.

The very unusual Kaidun chondrite is a chondrite breccia consisting of a variety of highly oxidized and highly reduced lithologies.

Rocks n Diamonds

Oh, he's the Rock the Rock of Gibraltar.

Like a rock.

The rocks are weathered into fantastic forms.

Decorative Rock

an inlet among the rocks, many rocks that... she had never realized,

They're clinging to a rock face and actually scraping bacteria off that rock face.

The waves crashed against the rocks.

I looked down from the top into the rocks.

You're climbing on little dimples and nubbins in the rock.

Here's a piece of limestone.

Not so fast. Wait a minute. Large rock...

It's possible because the mycelium produces oxalic acids, and many other acids and enzymes, pockmarking rock and grabbing calcium and other minerals and forming calcium oxalates.

You hit the solid rock.

What we are going to be doing with that Rover as it drives around, it's going to go and analyze the chemical composition of rocks.

A rock fell from above.

No water, rocky soil.

Didn't you see the rocks?

It looks nothing like what we would find if we dug in contemporary beds in North America.

It is understood that Chongqing currently owns 18 shale gas exploration rights established by Ministry of Land and Resources as the first domestic shale gas mining rights the Sinopec Fuling shale gas field.

He hit his head against a rock.

He hit his head against a rock.

After the limestone rocks, what?

You fell off the rocks?

There is a median point between tiny rock and gigantic rock, and in fact, if any of you have ever been to near Winslow, Arizona, there is a crater in the desert there that is so iconic that it is actually called Meteor Crater.

Under a high rock on a ledge near Penistone Crag.

No water, rocky soil.

And shale is not quite completely competent rock.

You bet what? I'll bet... he said he'd get off your rocks.

Get those wagons to the rocks.

I prayed... wondering how many eons must pass... before the wind and rain could wear away the mountain.

So, that's just a rock in the hillside.

And it's just limestone, nothing really special about it.

On the trail we took just before we reached the limestone rocks.

The Lord is my rock and my fortress.

The Lord is my rock!

He must have been smashed on the rocks.

But also, if there is something that we cannot reach because it is too high on a cliff, we have a little laser system which will actually zap the rock, evaporate some of it, and actually analyze what's coming from that rock.

We have brains that evolved in medium sized ancestors which couldn't walk through rocks.

All along it was thought to be either an act of God or perhaps long, slow climate change, and that really changed in 1980, in this rocky outcrop near Gubbio, where Walter Alvarez, trying to figure out what was the time difference between these white rocks, which held creatures of the Cretaceous period, and the pink rocks above, which held Tertiary fossils.

But it was too stoney and full of cactus on top.

The oldest rock on Earth is only 3.6 billion.