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How minerals formed in Rocky Mountains?(explain it please)
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The Rocky Mountains are mostly made of metamorphic rocks, specifically precambrian metamorphic rocks that were pushed up from under the crust as the mountains were formed. Metamorphic rocks change due to rising temperatures and pressures that change the chemical composition of the original rock.
User Drpelz
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Answer:

It lies within an ancient formed by the crustal accretion of central Colorado 1.8 to 1.7 billion years ago.....

User Karel Kubat
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