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How long did it take for the rockys mountains to form? Also what type of fault formed the mountain chain? ​

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100 years because that how it was made if this helps
User Mrxra
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Answer: The Rocky Mountains formed 80 million to 55 million years ago during the Laramide orogeny, in which a number of plates began sliding underneath the North American plate.

thrust faults

Step-by-step explanation:

User Greenhoe
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