The vast majority of lava out there falls into one of three types: mafic, intermediate, and felsic. They're also called basaltic, andesitic, and rhyolitic lavas, respectively. (There are other types, ...

Q: Is all volcanic magma the same temperature? A: The temperature of magma inside a volcano — and of lava as it emerges — is highly variable and depends in part on the chemical composition of the ...