Melted rock can be found above ground (lava) and underground (magma).
Wind and water break down existing rock into sediments. Next, sediments are eroded and deposited.
Pressure
Pressure
Pressure
Magma
Sediments
Molten magma (underground) and intense pressure slowly alter existing rock over time.
Slowly over time, the sediments are compacted and naturally cemented together (lithification).
This molten rock cools quickly (lava) or slowly (magma) over time to form rock.
Rock Examples
Rock Examples
Rock Examples
Basalt
Quartzite
Fossiliferous Shale
Slate
Sandstone
Marble
Gabbro
Limestone
Coquina
Obsidian
Granite
Gneiss
Check Your Work
Which type of rock is Coquina?
Enter your answer here.
Match-Rock-Types
Sabrina Ewald
Created on December 16, 2025
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Transcript
Melted rock can be found above ground (lava) and underground (magma).
Wind and water break down existing rock into sediments. Next, sediments are eroded and deposited.
Pressure
Pressure
Pressure
Magma
Sediments
Molten magma (underground) and intense pressure slowly alter existing rock over time.
Slowly over time, the sediments are compacted and naturally cemented together (lithification).
This molten rock cools quickly (lava) or slowly (magma) over time to form rock.
Rock Examples
Rock Examples
Rock Examples
Basalt
Quartzite
Fossiliferous Shale
Slate
Sandstone
Marble
Gabbro
Limestone
Coquina
Obsidian
Granite
Gneiss
Check Your Work
Which type of rock is Coquina?
Enter your answer here.