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Geology of the Grand Canyon: The Cretaceous.

THE EOCENE.THE JURASSIC.THE CRETACEOUS.The platform immediately below the Pink Cliffs is picturesque rather than grand. Rough rolling ridges of yellow sandstone, long sloping hillsides and…

Geology of the Grand Canyon: The Trias.

THE JURASSIC.THE VERMILION CLIFFS.THE TRIAS.Kanab village is situated under the eaves of the Vermillion Cliffs, in the jaws of the cañon of Kanab Creek. It has for several years been the…

Geology of the Grand Canyon: The Jurassic.

THE CRETACEOUS.THE TRIAS.THE JURASSIC.Beyond the Cretaceous, as we descend the stairway of terraces, the Jurassic comes to daylight. It forms a belt encircling the Cretaceous and outside of…

United States Geography

Find U.S. maps, information about longitude and latitude, rivers, mountains, elevation, geographic extremes, geography quizzes and more Geography Quizzes: Adult Level Geography…

How Old Is the Grand Canyon?

The Grand Canyon may be 10 million years older than we thought by Liz Olson Visit our Grand Canyon Slideshow.Photo of the Grand Canyon courtesy of Carol M. Highsmith…

Geology of the Grand Canyon: The Eocene.

THE CRETACEOUS.THE EOCENE.The foreground of the picture is full of strength and animation. At our feet is the brink of a precipice where the profiles descend 800 feet upon rugged sloped…