Ranger Minute - Rockarena Dance (wmv)
Ranger Minutes are short audiocasts or videocasts in which a park ranger shares interesting stories and information about Grand Canyon National Park.
i-Pod owners, The Quicktime version is available here.
If your playback is uneven and you would rather download the file to your computer,
cut and paste this link into your media player: (7.38MB WMV File)http://www.nps.gov/grca/photosmultimedia/upload/Rmin00804gcdance.wmv
Download the transcript (11kb PDF File)
The Grand Canyon Dance
First of all we’re going to start off with the oldest rocks down at the bottom, that hard metamorphic rock. So let’s get squished under heat and pressure. We’re getting metamorphosed, and as we’re getting squished, we’re getting cracked and faulted, and cracked and faulted. And through those cracks we’re getting magma oozing, and it’s flowing then it freezes.
On top of all that we get limestone, sandstone, shale; ancient oceans, ancient deserts, ancient beaches, ancient swamps; limestone, sandstone, shale; ancient oceans, ancient deserts, ancient beaches, ancient swamps.
And then look out, the North American plate is going to collide with the Pacific plate. Collision…the two plates colliding and we get uplift. One thousand, two thousand, three thousand, four thousand, five thousand, six thousand, seven thousand feet into the sky. We have the Colorado Plateau.
But then look out, the next powerful force, the Colorado River, and the river cuts down, the walls fall in, the river cuts down, the walls fall in, the river cuts down, the walls fall in, and we end up with … Grand Canyon!
How Old Is the Grand Canyon?
Did You Know?
For more than 30 years Grand Canyon National Park has provided a free shuttle bus
system on the South Rim. Visitors and
residents have made 75,000,000 boardings.
Riding the shuttles makes your stay more enjoyable, while reducing pollution and
decreasing traffic congestion. More...