Superior Hardened

which is the superior fire or earth?

I know that fire can be extinguished with dirt, but dirt can be burned by the fire? I know that clay (a form of dust) can be baked to cure but can be completely burned ash? If yes, what temperature would fire must be to completely dissolve the dirt?

element based on the 5 theory of TCM, fire creates earth, but Earth controls water which in turn controls Fire.