Sentence examples for clasts from inspiring English sources

Both contain significant amounts (at least 10 percent) of coarser-than-sand-size clasts.

Other intraformational conglomerates and breccias mix shallow- and deep-water sedimentary rock clasts encased in a finer-grained matrix of deeper-water material.

For example, beach deposits commonly contain lenses and bands of oligomictic orthoconglomerate, composed mainly (95 percent or more) of stable, resistant, coarse clasts of vein quartz, quartzite, quartz sandstone, and chert.

Breccias are consolidated rubble; their clasts are angular or subangular.

These clasts are derived mainly from the underlying bedrock.

Clast-supported conglomerates may be composed of large clasts of a single rock or mineral type (oligomictic orthoconglomerates), or they may contain a variety of rock and mineral clast types (petromictic orthoconglomerates).

Clast-supported conglomerates (and orthobreccias) are deposited by highly turbulent water.

Bedding (layering and stratification) in clast-supported conglomerates, if apparent at all, is typically thick and lenticular.

Graded bedding, in which size decreases from bottom to top, is common: because agitated waters rarely subside at once, declining transport power causes a gradual upward decrease in maximum clast size.

They can be subdivided into two specific categories: (1) clast-supported conglomerates (and breccias) and (2) matrix-supported conglomerates.

Particle roundness or angularity also reflects mineralogy (soft minerals are abraded more readily than hard minerals), clast size (coarse particles become rounded more rapidly than do fine ones), and transport distance (sands become more abraded and hence rounder as the distance traveled increases).