Mount Adams
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Mount Adams
Mount Adams is one of the largest volcanoes in the Cascade Range, it is way
bigger then any of the surrounding mountains. Mount Adams has been less active
during the past few thousand years than its neighboring mountains of St. Helens,
Rainier, and Mt. Hood, it will erupt again. In the future the eruptions will
probably happen more often from vents on the summit and upper sides of Mount
Adams than from vents scattered in the volcanic fields beyond. Large landslides
and lahars that don’t need to be related to eruptions probably will cause the
most destructive, far-reaching hazard of Mount Adams. Volcanoes create a variety
of geologic hazards during eruptions and when there isn’t any eruptive
activity. During most of its history Mount Adams has shown a limited range of
eruptive styles only being lava flows, debris slides, and tephra falls. Very
explosive eruptions have been rare. Compared to the large explosive eruptions at
nearby Mount St. Helens during the past 20,000 years, the eruptions of Mount
Adams have been very mild. Eruptions at Mount St. Helens have covered areas more
than 120 miles downwind with ash deposits several centimeters or inches thick,
but those at Mount Adams have blanketed only areas a few miles away with a the
same thickness of ash. Even though they’re low levels of power and force,
eruptions at Mount Adams are still very hazardous. More importantly even during
times of no eruptive activity, landslides of weakened rock that originate on the
steep upper sides of Mount Adams have been a dangerous common thing and they can
start lahars, which are watery flows of volcanic rocks and mud that surge
downstream like rapid flowing concrete. Lahars also known as mudflows or debris
flows and they can destroy and kill everything in the valley floors that they
run down in to tens of miles f...
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