mud polygon

mud polygon

[′məd ′päl·ə‚gän]
(geology)
A nonsorted polygon whose center lacks vegetation but whose peripheral fissures contain peat and plants. Also known as mud crack polygon.
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References in periodicals archive ?
Well-developed mud polygons, multiple stacking and repetition of the patterns vertically, as well as multiple generations of mudcracks on a single bedding plane, indicate an upper intertidal zone that was under water only during extreme spring tides.