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amina2002
amina2002 asks:
Q:

what happens when hardened lava builds up over a long period of time?

In Topics: Helping my child with science
> 60 days ago

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Expert

greenprof2
Nov 2, 2010
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What the Expert Says:

Hi -
If lava builds up over time you end up with a volcanic mountain, which you see in Hawaii and in cone volcanoes on land, like Mt Vesuvius. Over time the hardened lava (igneous rock), will weather and erode to form soils that are rich in minerals and good to grow things like potatoes (such as is the case in Idaho).

Hope this helps -
Michael Bentley, EdD, Expert Panelist

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