Clay marl

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Related to Clay marl: marlstone
a whitish, smooth, chalky clay.

See also: Clay

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
The first Lithuanian low-permeable soil filtration laboratory investigations of the upper-middle Devonian clay, silt, clay marl, dolomite, and sandstone were carried out by means of the "Lita-5" permeameter designed by Klizas and Miksys (1984).
As well as searching for deposits of oil, coal, clay marl and other minerals, Hayden was charged with gathering samples of geology, mineralogy and palaeontology, and to make a note of soil types in relation to their suitability for agriculture.
The red clay marl used is that of North Devon slipware, the trays could easily serve sushi.