Why isn’t magma uniform in composition?

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As different volcanoes erupt, those with lava can have significantly different amounts of dissolved gasses, different viscosities, and so on. Why isn’t this fluid more uniform? Is there something structural about the earth that prevents magma from mixing? Is it even all a liquid?

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Anonymous 0 Comments

Think of the magma underground like Italian dressing. If you shake it up then give it some time, it will seperate again into oil in top, then vinager, then some little bits of stuff at the bottom. That’s kinda what happens with magma. Now if you poke a hole in the bottle of dressing in different spots, different stuff will flow out. The hole you make is kinda like a volcano, and why lava is kinda different in some places.

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