HillWilliam
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Fri Jan-09-09 02:53 PM
Response to Reply #13 |
20. I'm no geologist either, so, question |
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if magma had moved close enough to cause shallow quakes, wouldn't there be changes in the surface features, like those driven by gas and water? (Like the mudpots and geysers.) We'd notice that. I seem to remember (from sleeping in class, sorry!) that one of the signs of imminent eruption (of any sort of volcano) is a marked change in hydrologic features: more volume, less volume, changes in pH or clarity or temperature... things you wouldn't miss.
I could be wrong, subject to correction, but that's why I'm asking.
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