Saturday, December 6, 2014

Geo 730: December 5, Day 704: And Then...

And then we turned a corner...
...and there was Mount Hood in all its glory. Mount Hood is mostly composed of andesitic to dacitic dome lavas, and is apparently not in the habit of temperamental explosive eruption, like its nearby neighbor to the north, Mount St Helens. While I'd imagine that during ongoing dome-building eruptions, pyroclastic flows could be a serious risk, the biggest risk in historical times is that of lahars, when saturated rubble rushes down the mountain and inundates nearby landscapes, just as we've been seeing in numerous previous posts.

Photo unmodified. October 10, 2012. FlashEarth Location (Approximate).

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