Rock Types by Koven Smith

Igneous Rocks

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Igneous rocks form from the cooling and solidification of magma or lava. They can be either intrusive or extrusive.

smithkm24 — 2024-06-26 18:18:56 UTC

Form when lava cools quickly on the Earth's surface, resulting in small crystals. Example: Basalt.

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Form when magma cools slowly beneath the Earth's surface, leading to larger crystals. Example: Granite.

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Sedimentary rocks form from the accumulation and lithification of sediment. They can be clastic, organic, or chemical

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Composed of fragments of other rocks.

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Formed from the remains of living organisms.

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Formed from the precipitation of minerals from water.

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Metamorphic rocks form from the alteration of existing rocks (igneous, sedimentary, or other metamorphic rocks) under heat and pressure

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Have a layered or banded appearance due to the alignment of minerals.

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Do not have a layered appearance.

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Source 1

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Source 2

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Source 3