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Marl

Fine-grained carbonate-rich mud; a calcareous clay which contains approximately 30 to 65 percent calcium carbonate.

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marl
Building materials; Concrete

A calcareous clay, containing approximately 30 to 65 percent calcium carbonate (05003), found normally in extinct fresh wafer basins, swamps, or bottoms of shallow lakes.

marl
Natural environment; Coral reefs

Fine-grained carbonate-rich mud; a calcareous clay which contains approximately 30 to 65 percent calcium carbonate.

marl
Earth science; Soil science

Soft and unconsolidated calcium carbonate, usually mixed with varying amounts of clay or other impurities.

marl
Biology; Ecology

A light-gray earth made of carbonates from shells or fossils; can be either loose or firm. Used as a fertilizer or a source of lime for lime-poor soils.

marl
Natural environment; Speleology

Unconsolidated sedimentary rock consisting largely of calcium carbonate and clay; usage varies from calcareous clay to earthy limestone, and in some parts of the United States, ...

marl
Science; General science

In the most general use of this term, a sediment that consists of a mixture of calcium carbonate (CaCO 3 ) and any other constituents in varying proportions. Marls usually are ...

nodulose
Natural environment; Coral reefs

With small nodules, knobs or swellings.

fissure
Natural environment; Coral reefs

A deep and narrow depression cutting across the reef front with origins relating to jointing planes in the reef limestone or non-limestone bedrock.

damselfish
Natural environment; Coral reefs

A large family (Pomacentridae) of bony fishes which are abundant and common inhabitants of coral reefs. They possess robust, deep, and laterally compressed bodies. The majority of ...

complementary resources
Natural environment; Coral reefs

A pair of resources for which consumption by the consumer of one resource reduces its requirement for the other.

antennule
Natural environment; Coral reefs

A small antenna, especially the first pair of antennae in crustaceans.

odontophore
Natural environment; Coral reefs

A tooth-bearing structure found in most mollusks, except bivalves. It consists of several muscles and a cartilage which support the radula and radula sac; the term is also applied ...

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