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Are magma and lava radioactive?

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Yes, and so are you, and maybe your kitchen counters as well. Traces of radioactive elements are found in many places. Carbon is a key element of all living things, and a small percentage of all carbon is the radioactive isotope carbon 14. read more

Yes, magma and lava are radioactive, because they contain naturally occurring thorium and uranium, which are radioactive. But, they are not dangerously radioactive. read more

The first, as you have asked in your question, is radioactive decay. The second is friction, due to flexing of the earth due to tidal forces caused by the gravitational attraction between the moon and the earth. So the process of creating magmas and lavas is not completely be due to radioactive decay. read more

No, lava is not radioactive. Lava by definition is the molten rock "magma" after it has reached the surface of the earth. Magma is the result of the heat from the earth's core partially melting rock. The rock being melted however is not in direct contact with the liquid in the core of the earth. read more

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