biogenic sediment
http://inspire.ec.europa.eu/codelist/LithologyValue/biogenicSediment
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ooze
Biogenic sediment consisting of less than 1 percent gravel-size (greater than or equal to 2 mm) particles, with a sand to mud ratio less than 1 to 9, and less than 50 percent carbonate minerals.
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organic rich sediment
Sediment with color, composition, texture and apparent density indicating greater than 50 percent organic content by weight on a moisture-free basis.
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