The Channeled Scablands Of Eas

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surrounded by mountains and encircled by three rivers. As the molten rock cooled it began to crack and form hexagonal patterns through out it. These joints broke up the lava in vertical columns of basalt rock. After eruptions as a whole stopped, the lava field was tilted as a unit to the southwest. Today the northeast rim is 2,300 feet taller then the southwest, creating a natural flood plan to the Columbia River. Beginning a while after the lava cooled, windblown silt, or loess, began to accumulate over the field, eventually producing the rich farmland of the Palouse hills. The silt reaches a maximum depth in the Pullman-Colfax area at 200 feet.
The Northern Hemisphere's Ice Age began more then 2 million years ago, but the Scablands history was not yet formed until 100,000 years ago. At this time the great continental glaciers began to make their march from British Columbia to what is now known as northern Washington, Idaho, and Montana. The ice sheet divided its ...

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