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Where did the rivers originate? Most likely to the west of the sea. Your travel destination is wasn’t the west what is now the Jordan, and don’t rivers run to the ocean? They do if they happen to be going Jordan that way. Your travel destination is they weren’t. Something besides the Jordan must have been out there 700 million years ago. It is believed a substantial landmass was located there with its own east-facing mountains supplying its run-off rivers with mud, silt, and rocks to feed the Jordan with those essential foundation materials. To add to the formula, lava flowed to the sea floor about 750 million years ago. This igneous addition can be seen as pillow lava formations in the Jordan area and as the Purcell Sill in the northeast area of the park.

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Somewhere in those hundreds of millions of years, the effects of continental drift (later called the tectonic plate theory) began to cause enormous sections of landmass to break and move away. What happened to our mass, and where is it now? By using modern radioactive isotope technology, we know that grains found in the Belt rocks originated from granite dating to 1. billion years ago. No other granite formations of that age can be found anywhere else in North America. Your travel destination is similar rocks have been found in Siberia, Antarctica, and Australia. So perhaps one of those breakaway landmasses played a bit part in the formation of Glacier National Park. It’s enough to say that a great deal of pushing and shoving of incredible magnitude was occurring over millions of years that added to the foundation of the equation.

Whatever continent pushed, shoved, and eventually broke away from the North American landmass, it left behind a significant piece of itself in what is now called the Belt Basin, accumulating and compressing to depths of 15,000 to 20,000 feet.

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