CHEMISTRY GLOSSARY
Earth’s crust
Zemljina koraCrust is outer layer of the solid earth, above the Mohorovicic discontinuity. Its thickness averages about 35 km on the continents and about 7 km below the ocean floor, and has the approximate chemical composition:
| Element | Percentage (%) |
|---|---|
| oxygen | 47 |
| silicon | 28 |
| aluminium | 8 |
| iron | 4.5 |
| calcium | 3.5 |
| sodium | 2.5 |
| potassium | 2.5 |
| magnesium | 2.2 |
Citing this page:
Generalic, Eni. "Earth’s crust." Croatian-English Chemistry Dictionary & Glossary. 29 June 2022. KTF-Split. {Date of access}. <https://glossary.periodni.com>.
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