figure 3 6 average elemental proportions in earth s crust which is close to the average position for larger image elemental position of the earth s crust a description of silicon and oxygen as the two most mon chemical elements in the earths 45 elemental position of the earth s crust which is the most abundant element in the earth s crust oxygen chemical elements in the crust major elements in the earth crust the heating effect of the sun with the seasons for an equinox mystery at the core of the earth position of the earth s crust elemental position of the earth s crust percene of elements in earth crust 5 position of earth s crust abundance atom fraction of the chemical elements in earth s upper continental crust as a function of atomic number the rarest elements in the crust position of the crust the most abundant element in the lithosphere of the earth is oxygen 3 earth s crust atmosphere ocean living things element brint montgomery site figure 2 paring the elemental position by weight in percent for the most abundant elements in the human body a to the earth s crust and b to the 2 we have 2 ways of dividing earth s layers the internal structure of earth rocks in the earth s crust the most abundant elements in the earth s crust the position of earth expressed as m ratios match quite precisely corresponding seismically determined parts of the earth as shown in the table at right print the earth s crust facts layers rature position worksheet the eight elements that make up earth s crust the dominance of oxygen and silicon in the earth s crust gaurantees that most igneous rocks are made up of silicate minerals the main differences in the 6 fascinating facts about the earth s mantle 21 21 elemental position of the earth s crust 21 iron is cosmically most abundant