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News Release 10-099
Volcanic Eruptions in North America Were More Explosive in Ancient Past
The next Yellowstone eruption could be similar volcanic event
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Multiple ancient volcanic ash beds exposed at Scotts Bluff in Nebraska.
Credit: Huiming Bao
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Volcanic deposits from 35-15 million years ago line Scotts Bluff National Monument, Nebraska.
Credit: Huiming Bao
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Gypsum crystals embedded in calcite in a 28-million-year-old volcanic ash bed in Scotts Bluff.
Credit: Huiming Bao
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An ancient volcanic ash bed exposed at Scotts Bluff National Monument.
Credit: Huiming Bao
Download the high-resolution JPG version of the image. (839 KB)
Use your mouse to right-click (Mac users may need to Ctrl-click) the link above and choose the option that will save the file or target to your computer.