the u.s. rocky mountains came to look the way they do today by being seen from across the prairies.
the u.s. rocky mountains came to look the way they do today by being seen from across the prairies.
how did the u.s. rocky mountains come to look the way they do today?
seen from across the prairies
the rocky mountains took shape during an intense period of plate tectonic activity that resulted in much of the rugged landscape of the western north america. the laramide orogeny, about 80–55 million years ago, was the last of the three episodes and was responsible for raising the rocky mountains. subsequent erosion by glaciers has created the current form of the mountains.









































section::::ancestral rock.
geology of the rocky mountains
list of passes of the rocky mountains









































the rocky mountains of north america include more than one thousand named mountain passes (topographic saddle points).









































section::::see also.









































bullet::::- list of mountain passes









































bullet::::- rocky mountains









































bullet::::- canadian rockies









































bullet::::- central rocky mountains









































bullet::::- western rocky mountains









































bullet::::- southern rocky mountains









































bullet::::- mountain pass









































bullet::::- list of mountain passes in colorado









































bullet::::- list of mountain passes in montana









































bullet::::- list of mountain passes in wyoming









































bullet::::- list of railroad crossings of the continental divide of north america









































bullet::::- list of rocky mountain passes on the continental divide of the americas
list of passes of the rocky mountains