I am NOT going out shopping on Black Friday. We are decorating for Christmas. Which has little to do with the state of Idaho, but that is the postcard for today.
This is standard sized postcard, published by the Idaho Geological Survey. After scanning it, I seemed to have misplaced it!
The Geology of Idaho is similar to the states around it - after all, geology does not stop at the state line. The pink color represents a huge intrusion of granite, now exposed at the surface. The green and olive colors represent sedimentary rocks, uplifted during mountain building, just as in Montana, and Nevada. The bright blue represents Columbia River basalts. The broad yellow is another basalt flow. This area has developed good soils for growing potatoes.
Time to go, the kids are fighting. Happy PFF!
Viridian
