marl
Sign in to savealt=|thumb|Marl thumb|Scala dei Turchi coastal marl formation, southern [[Sicily]]
AI overview
Marl is a type of sedimentary rock or soil made up of a mixture of clay and calcium carbonate (limestone), typically formed in ancient seas or lakes. It matters because it has been historically used as a fertilizer to improve soil quality and is also studied by geologists to understand past environments and climate conditions.
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Article
15 sectionsContents
- Description
- Occurrences
- Economic geology
- Historical use in agriculture
- Modern agricultural and aquacultural uses
- Portland cement
- Civil engineering
- Nuclear waste storage
- Marl lakes
- See also
- References
- Citations
- Bibliography
- Further reading
- External links
alt=|thumb|Marl thumb|Scala dei Turchi coastal marl formation, southern [[Sicily]]
Marl is an earthy material rich in carbonate minerals, clays, and silt. When hardened into rock, this becomes marlstone. It is formed in marine or freshwater environments, often through the activities of algae.