Three difference between igneous and sedementary rock?
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Igneous rocks form when molten rock (magma or lava) cools and solidifies. Sedimentary rocks originate when particles settle out of water or air, or by precipitation of minerals from water.
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Igneous---
- Igneous rock is formed through the cooling and solidification of magma or lava. ...
- Igneous and metamorphic rocks make up 90–95% of the top 16 km of the Earth's crust by volume.
- The structures of igneous rocks are large scale features, which are dependent on several factors like: (a) Composition of magma.(b) Viscosity of magma. (c) Temperature and pressure at which cooling and consolidation takes place. (d) Presence of gases and other volatiles
Sedimentary---
- The sedimentary rock cover of the continents of the Earth's crust is extensive, but the total contribution of sedimentary rocks is estimated to be only 8% of the total volume of the crust.
- Sedimentary Rocks formed by the deposition of material at the Earth's surface and within bodies of water
- fossils are most commonly found in sedimentary rock.
- Structures in sedimentary rocks can be divided into 'primary' structures Structures are always large-scale features that can easily be studied in the field.
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