marl

Also known as marlstone

alt=|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.

AI-generated from the Wikipedia summary — may contain errors.

Wikidata facts

Image: Piece of marl.JPG

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Commons category: Marl
exact match: purl.obolibrary.org/obo/ENVO_01000853

Sources (6)

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~8 min read

Article

15 sections

Contents

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.