The percent (by volume) of the earth crust is made up of magnesium is 0.33 percent on Page 1 of the ESRT Packet
oxygen
crust
silicon percent abundance in earths crust poops
With a very sizable iron core and a (by comparison) wafer-thin crust, I doubt that the earth's crust even approximates a full percentage point.
The earths crust is a part of the outermost layer.
iron and magnesium
About 2%.
oxygen
Deformation
Earths under crust surrounded by Upper Mantle (35-60 km) .The mantle is composed of sillicate rocks that are rich in iron and magnesium relative to the overlying crust.
(96%) i think
crust
after shock
The Earths crust.
Silicates make up close to 95 percent of the rocks in the Earth's crust
Roughly 5%.
The moon's crust composition is similar to the Earth's, but the moon's mantle contains a higher amount of iron. While the moon's crust is composed of 43 percent oxygen, 20 percent silicon, 19 percent magnesium, 10 percent iron, and trace amounts of other elements. The Earth's crust is made up of 46.6 percent oxygen, 27.7 percent silicon, 8.1 percent aluminum, 5.1 percent of iron, 2.1 percent magnesium, and other elements.