Anonymous
Anonymous asked in Science & MathematicsEarth Sciences & Geology · 8 years ago

what factors contribute to whether it is a'a lava or pahoehoe lava?

i know they both come from rhyolitic lava which erupts at high temperatures blah blah blah

what decides if it is a'a or pahoehoe is it the temperature or features of the surface its flowing over?

I was thinking pahoehoe might happen when it goes over a smooth surface and a'a when it goes over a rough surface with cracks for it to pile up in. thats just a guess any actual knowledge??

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  • Joseph
    Lv 6
    8 years ago
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    Wikipedia explains it better than I can.

    http://en.wikipedia.org/wiki/Lava#.CA.BBA.CA.BB.C4...

    Temperature is the key difference, the pahoehoe being hotter, so will run smoother. The ground surface doesn't matter too much.

    Source(s): Wiki
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