Which rock type is typically formed when sediment particles are cemented together?

Which rock type is typically formed when sediment particles are cemented together?

• A. Igneous rock
• B. Metamorphic rock
• C. Sedimentary rock
• D. Granite

Answer: (C)

Sedimentary rocks form when loose sediment particles are pressed together and bonded by minerals carried in water, a process called cementation (often with compaction as well). This lithification turns layers of sand, silt, and other grains into solid rock, like sandstone or shale. That’s why the rock type produced by cementing sediment particles is sedimentary rock. Igneous rocks come from cooling and solidifying molten material, while metamorphic rocks form when existing rocks are altered by heat and pressure; granite, for example, is an igneous rock.

Sedimentary rocks form when loose sediment particles are pressed together and bonded by minerals carried in water, a process called cementation (often with compaction as well). This lithification turns layers of sand, silt, and other grains into solid rock, like sandstone or shale. That’s why the rock type produced by cementing sediment particles is sedimentary rock. Igneous rocks come from cooling and solidifying molten material, while metamorphic rocks form when existing rocks are altered by heat and pressure; granite, for example, is an igneous rock.