All posts tagged: Darwin and the Scottish Cows

Scottish Highlander cattle Credit: Lloyd/Flickr/Creative Commons

Darwin and the Scottish Cows

Charles Darwin developed his theory of evolution for the origin of the species when he sailed around the world on a ship named the Beagle. On that voyage, in 1834, he explored the eroded valley of the Santa Cruz River in Argentina and he commented on the lapse of ages and the gradual erosion that produced the valley. We now know that a GLOF (Glacier Lake Outburst Flood) occurred when an icy glacier blocked the river near the mountains and dammed up a huge reservoir. When the water burst through the ice, the GLOF eroded the valley quickly, probably in days. When I was a boy, I travelled with my family in Washington State, and I noticed that the dry interior had hundreds of eroded water channels, all dry, and I saw probably the biggest water fall in the world, Dry Falls, four times the size of Niagara, in a deep eroded valley. I knew then that something very big had happened. In the 1920s, a Geologist named J. Harlen Bretz named that region in …