All the water of Earth, condensed to a single sphere.
And?
I moved to the region ten years ago and have been fascinated with the topography/geology. There are huge boulders the size of a house sitting in the middle of the dry plains off I-90 in Central Washington that came from the Canadian Rockies a hundred or more miles away. Only one way they could have gotten there.... water/ice.
There are two theories about the Missoula ice dam that burst so long ago. One says the event occurred numerous times over thousands of years. The other says there was one cataclysmic event at the end of the ice age where one of the worlds largest freshwater lakes (possibly the largest ever) suddenly drained after the ice gave way holding Lake Missoula. Prehistoric Lake Missoula contained most of the water from the Canadian Rockies.
I think it may have been the PBS special on the event(s) that suggested this caused the largest single release of energy in the Earth’s history. I don’t know, but it still fascinates me everytime I travel through Central Washington. To see massive rounded boulders that travelled over a hundred miles gives you an idea of how powerful it must have been! The Rathdrum aquifer also runs through this region from the same source of water as the Columbia River and forms the Spokane river system. It is one of the most powerful aquifers in the world. Prior to the Grand Coulee dam and other dams the Columbia must have been amazingly violent!
Geologist will argue about one event or many for the rest of my life because there is evidence that supports both theories.
“When J Harlen Bretz uncovered evidence of giant floods in eastern Washington in the 1920s, it took most of the 20th century for other geologists to believe him. Geologists had so thoroughly vilified the concept of great floods that they could not believe it when somebody actually found evidence of one. “
It is kind of like trying to convince someone of what the current leaders are dong to this country. It is a lost cause. People refuse to see what is right in front of their faces.
Just check out Dry Falls State Park in eastern Washington State and you’ll see the evidence.
http://en.wikipedia.org/wiki/List_of_Doctor_Who_serials
http://www.youtube.com/watch?v=PhZ1-_aod80
ping
Thanks for this thread.
That happened where we live also. About 400,000 years ago there was a giant lake here in southern Colorado. To our south about 30 miles is a line of volcanoes that were the dam for the lake. The water broke through and the lake drained scouring a canyon into northern New Mexico. The present day Rio Grande flows through the canyon now and in that section there are class 4 and 5 rapids. We could sure use some of that water today.
Thanks 2ndDivisionVet. Really interesting.