MARL
Marl
Marl or marlstone is a calcium carbonate or lime-rich mud or mudstone which contains variable amounts of clays and silt. The dominant carbonate mineral in most marls is calcite, but other carbonate minerals such as aragonite, dolomite, and siderite may be present. Marl was originally an old term loosely applied to a variety of materials, most of which occur as loose, earthy deposits consisting chiefly of an intimate mixture of clay and calcium carbonate, formed under freshwater conditions; specifically an earthy substance containing 35–65% clay and 65–35% carbonate. It also describes a habit of coralline red alga. The term is today often used to ...The above text is a snippet from Wikipedia: Marl
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marl
Noun
- A mixed earthy substance, consisting of carbonate of lime, clay, and possibly sand, in very variable proportions, and accordingly designated as calcareous, clayey, or sandy.
Verb
- To cover, as part of a rope, with marline, marking a peculiar hitch at each turn to prevent unwinding.
The above text is a snippet from Wiktionary: marl
and as such is available under the Creative Commons Attribution/Share-Alike License.