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phreatomagmatic |
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phreatomagmatic [frē¦ad·ō·mag′mad·ik] (geology) Pertaining to a volcanic explosion that extrudes both magmatic gases and steam; it is caused by the contact of the magma with groundwater or ocean water. 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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| 4) is a phreatomagmatic basaltic volcano that erupted through wet lake and floodplain sediments. These phreatomagmatic explosive eruptions result from the interaction of highly charged fluid-rich magmas with the water saturated country rocks into which they are intruding. For pyroclastic eruptions of magmatic or phreatomagmatic origin, the high heat capacity and thermal conductivity of water leads to rapid heat transfer and potentially to another phase of fragmentation (Gudmundsson, 2003). |
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