rim cement

rim cement

[′rim si‚mənt]
(geology)
A thin layer of calcium carbonate, hematite, or silica developed on the surface of detrital grains during diagenesis.
References in periodicals archive ?
Diagenesis evolve through several systematic steps; starting with pore-reduction through compaction, alteration of unstable framework grains, alteration of rim cement, followed by pore-filling cement and transformation of mineral phases in deeply buried sandstone (Wilson and Pittman, 1977).