Super volcano : the ticking time bomb beneath yellowstone national park
Despite growing evidence of geothermic activity under America's first and foremost national park, it took geologists a long time to realize that there was actually a volcano beneath Yellowstone. And then, why couldn't they find the caldera or crater? Because, as an aerial photograph finall...
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| Format: | EBOOK |
| Other Format: | BOOK |
| Language: | ENGLISH |
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Voyageur Press
2007
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