Rock Definition, Characteristics, Formation, Cycle

Rock, in geology, naturally occurring and coherent aggregate of one or more minerals. Such aggregates constitute the basic unit of which the solid Earth is composed and typically form recognizable and mappable volumes. The three major classes of rock are igneous, sedimentary, and metamorphic rock.

Igneous Rocks - Definition, Characteristics, Types, Examples & Uses

Igneous Rocks

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Rock cycle - Wikipedia

Rocks and minerals - British Geological Survey, rocks

Igneous Rocks - Formation, Classification, Examples, Uses - Geology In

AP Notes - Rock Cycle and Formation - AP Environmental Science

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Reading: Characteristics of Metamorphic Rocks

Metamorphic rock, Definition, Formation, & Facts

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