Grand Canyon National Park - Ranger Minute - How Old? (mov) (U.S. National Park Service)

Ranger Minutes are short audiocasts or videocasts in which a park ranger shares interesting stories and information about Grand Canyon National Park.

nps photo by michael quinn

View from Mohave Point (West Rim)

How Old Is The Grand Canyon ? - Duration 01m 58s Written and Produced by David Smith
Available Downloads
Video for Windows/ Zune	Video for iPod/ devices	Transcript
11MB_WMV File	13MB_MP4 File	34kb PDF File

If you have the Quicktime Player on your computer (Mac or Windows) you should see a player on the right.
Click on the player to activate it, then, press the play button. It may take a few seconds for the video to start.

If your playback is uneven and you would rather download the file to your computer,
this is a direct link. (3.38MB MOV File)

Basic Answers to Geological Questions Downloadable

Often described as Earth's greatest geological showcase, the ensemble of stunning dimensions — the melding of depth, width, and length — sets Grand Canyon apart. Nowhere else features such a dazzling variety of colorful rock layers, impressive buttes, and shadowed side canyons. Grand Canyon is the Illustration: canyon against which all other canyons are compared.

Download Basic Answers to Geological Questions (292kb PDF File)
This is page 6 from the Grand Canyon Guide newspaper.

Some of the photos in Ranger David's presentation are from the United States Geological Survey's . Click to see more USGS photography of Grand Canyon National Park. This includes views along and within the canyon and a collection of historic images along the Colorado River taken by the Powell Expedition of 1872. Website images include both standard photograph and 3D views (as anaglyphs - requiring red-and-cyan 3D viewing glasses).

The Grand Age of Rocks: The Numeric Ages for Rocks Exposed within Grand Canyon
http://www.nature.nps.gov/geology/parks/grca/age/index.cfm