Crossword clues for Most of the earth's core 4 lettersAnswerClueAXISLine through Earth's coreIRONAbundant element in Earth's coreIRONPrimary component of the earth's coreIRONMost of the earth's coreIRONMuch of the earth's coreIRONEarth's core, largelyNIFEHypothetical core material of the earth, supposedly nickel and iron: Geol.LAYEREarth's core, mantle, or crustARTEarth's core?MOLTENLike the outer core of the earthMOLTENLike the Earth's outer coreLAYERCrust, mantle or inner core, for the earthLAYERCrust, mantle or core, for the earthMANTLELayer of the earth between the crust and the core