wackestone

Example:In contrast to wackestone, mudstones and shales are fine-grained sedimentary rocks where the particles are finer and less well-rounded.

Definition:Refers to materials that are small in grain size, typically less than 0.0625 mm in diameter, which are more prevalent in mudstone and shale than in wackestone.

Example:In deposits with fine-grained lithofacies, such as mudstones, there is no coarse-grained component, unlike in wackestones which contain larger, well-rounded particles.

Definition:A sedimentary rock containing well-rounded to subangular particles that are typically finer than a wackestone's grain size.