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From Alaska to New Mexico, the Rockies are one of the great mountain belts of the world--caused by tectonic forces of the Pacific Plate pushing against the North American continent. They have formed as the earth's continental crust has been shortened under pressure--by around 1 inch a year. What's more, they are still rising and they are still young in geologic terms: when the dinosaurs roamed the Earth they had not even started to form. |
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| Title: | The Rockies | |
| Air Date: | December 22, 2009 | |
| Runtime: | 60 min | |
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| Version 1 | youtube.com | 9 views | Report Link | ||
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heatherc : i feel this episode ends early....