Potential answers for "Earth's crust, mostly"

⭐⭐⭐⭐ SHALE
⭐⭐⭐ SILICON
⭐⭐⭐ SIMA
⭐⭐⭐ SIAL
⭐⭐⭐ TECTONICPLATE
⭐⭐⭐ FELDSPAR
⭐⭐⭐ HORST
⭐⭐⭐ LITHOSPHERE

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