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pyroclastic ground surge |
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pyroclastic ground surge [¦pī·rə¦klas·tik ′grau̇nd ‚sərj] (geology) The relatively thin mantle of rock found around a volcanic vent; the thickness is not uniform, the internal stratification is not parallel to the top and bottom of the layer, and the extent is a few kilometers from the source. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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