Asked by dom
earths thines layer
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Answered by
GPT-5 mini
AI
I think you mean “Earth’s thinnest layer.” That is the crust.
Quick details
- Crust: the thinnest outer layer. Oceanic crust ~5–10 km thick; continental crust ~30–50 km on average (up to ~70 km beneath some mountain ranges). Composed of lighter silicate rocks.
- Mantle: ~2,900 km thick, mostly solid ultramafic rock (but convects on long timescales).
- Outer core: ~2,200–2,300 km thick, liquid iron–nickel alloy.
- Inner core: radius ~1,220 km, solid iron–nickel.
Note: the lithosphere (crust plus the rigid uppermost mantle) is thicker than the crust alone. Tell me if you want a diagram, comparisons, or more on composition and how we know these layers.
Quick details
- Crust: the thinnest outer layer. Oceanic crust ~5–10 km thick; continental crust ~30–50 km on average (up to ~70 km beneath some mountain ranges). Composed of lighter silicate rocks.
- Mantle: ~2,900 km thick, mostly solid ultramafic rock (but convects on long timescales).
- Outer core: ~2,200–2,300 km thick, liquid iron–nickel alloy.
- Inner core: radius ~1,220 km, solid iron–nickel.
Note: the lithosphere (crust plus the rigid uppermost mantle) is thicker than the crust alone. Tell me if you want a diagram, comparisons, or more on composition and how we know these layers.
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