- Jun 21, 2009
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I don't think there is a plate boundary there. Pretty sure there isn't. But I was just thinking about volcanoes. I know the big caldera area at Yellowstone (been there), and I was thinking about a volcano called "the tower" or something? I'd have to research it to know better. Then moving a bit west into Idaho, there's the 'Craters of the Moon' volcano. Both are considered dormant. How far from Wyoming to the Rockies? What about the Cascades? Yellowstone is situated (in the larger view) between some very powerful uplift forces. I'm trying to use my imagined "x-ray vision" to think about what's happening under our feet.
Here's more: America's Volcanic Past:
Rocky Mountains
I learn some of my best stuff when somebody asks a question. Thanks, Barbarian!
Look: Plate Boundary Map
Yellowstone Caldera chain:
Image by USGS.
Here's more: America's Volcanic Past:
Rocky Mountains
I learn some of my best stuff when somebody asks a question. Thanks, Barbarian!
Look: Plate Boundary Map
Yellowstone Caldera chain:
[video=youtube;BBGmXsZHInw]http://www.youtube.com/watch?feature=player_embedded&v=BBGmXsZHInw#![/video]Caption: said:"The current caldera at Yellowstone is the most recent in a series of eruptions that span millions of years. The North American Plate is moving west over a stationary hot spot. As the plate moves the hotspot produces an enormous eruption (and a large caldera) every few million years. This has produced regional basaltic lavas and a chain of rhyolitic caldera groups (circles, with ages in millions of years) along the track of the Yellowstone hot spot." Link: USGS: Articles/Caldera
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