The River That Split the Cascades in Two
Автор: The Wild Escape
Загружено: 2026-01-01
Просмотров: 360
Описание:
Why does the Columbia River cut directly through the Cascade Range instead of going around it?
The Columbia River Gorge looks inevitable once you see it. A massive river, a canyon, two walls of rock guiding wind, weather, roads, rail, and people between the Pacific coast and the interior Northwest. But geologically, this shouldn’t exist. Rivers usually avoid rising mountain ranges. The Columbia didn’t.
Sources/Further Reading
Columbia River geology: basalt flows ~17–6 million years ago
https://or.water.usgs.gov/projs_dir/c...
Columbia River as the largest river known to cross an active volcanic arc; geological persistence ~17+ million years
https://www.science.org/doi/10.1126/s...
US Army Corps of Engineers history of Bonneville Lock and Dam
https://www.nwp.usace.army.mil/bonnev...
Columbia River Gorge National Scenic Area governance overview
https://www.fs.usda.gov/r06/columbiar...
#ColumbiaRiverGorge
#GeologyExplained
#PacificNorthwest
#EarthScience
#naturedocumentary
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