How Was Red Rocks Formed?

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Red Rocks was formed by the erosion of a mountain range that deposited sediments into the valleys, and these sediments were buried and compressed over time. Discover why Red Rocks is angled facing east with help from a lab manager and research scientist in this free video on rocks.

Part of the Video Series: Identifying Rocks
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Video Transcript

Hi this is Jane Stammer from the Colorado School of Mines and I'm here to answer questions on how red rocks was formed. Millions and millions of years ago there was actually an ancestral rocky mountain range where today's modern rocky mountain range lies today. Over time as these mountains eroded, they deposited sediments into the valleys that they were next to and these sediments got buried over time and compressed to form red rocks. Then about a 100 millions years later, the modern day rocky mountains uplifted to where they are today causing these sediments to be exposed to the surface and also tilted. So if you look at red rocks today, it is angled facing east and all the sediments that were once buried thousands of feet below the surface are now uplifted and exposed to where they are today. And that is how red rocks formed.

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