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Zinc.
Well its from the earths plates under ground when one collapse the earths crust above starts rumbling witch causes a earthquake
SiO2 makes up around 50% of the crust in the form of many types of minerals like jasper, flint, chalcedony, opal, quartz.... There is no one mineral that makes up 99% of the earths crust
One is silicon, but I don't know the other:(oxygen
The crust is recycled by subduction which is.... a geological process in which one edge of a crustal plate is forced sideways and downward into the mantle below another plate
the temperture varies
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.
Carbon
one and a half miles thick
Plate
Zinc.
No, other elemental categories, such as alkali metals and transition metals are also found on the Earth's crust. One such alkali metal that is frequently found on the Earth's crust is potassium (K).
Carbon
Mercury.
The percentage of Earth's crust is less than one percentage in terms of Earth's volume. The Earth's crust is actually a thin layer.
30 grams of Astatine can be found in the earths crust at any one time.
I think there are three types of earthquakes one is the earths crust