Billion-year-old rock breaks into a jagged pattern in Glacier National Park, Montana.
Billion-year-old rock breaks into a jagged pattern in Glacier National Park, Montana. Published in "Light Travel: Photography on the Go" book by Tom Dempsey 2009, 2010. Since 1932, Canada and USA have shared Waterton-Glacier International Peace Park, which UNESCO declared a World Heritage Site (1995) containing two Biosphere Reserves (1976). Rocks in the park are primarily sedimentary layers deposited in shallow seas over 1.6 billion to 800 million years ago. During the tectonic formation of the Rocky Mountains 170 million years ago, the Lewis Overthrust displaced these old rocks over newer Cretaceous age rocks.Add to Cart Add to Lightbox Download