- clasts
- n. individual rock fragment that has broken off a larger piece of rock
English contemporary dictionary. 2014.
clasts
Look at other dictionaries:
sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… … Universalium
Sedimentary rock — Middle Triassic marginal marine sequence of siltstones (below) and limestones (above), Virgin Formation, southwestern Utah, USA Sedimentary rock are types of rock that are formed by the deposition of material at the Earth s surface and within… … Wikipedia
Conglomerate (geology) — For a kind of corporation, see Conglomerate (company). Conglomerate Sedimentary Rock Boulder of conglomerate with cobble sized clasts. Rock hammer for scale … Wikipedia
Imbrication (sedimentology) — In sedimentology imbrication refers to a primary depositional fabric consisting of a preferred orientation of clasts such that they overlap one another in a consistent fashion, rather like a run of toppled dominoes. Imbrication is observed in… … Wikipedia
Clastic rock — A thin section of a clast (sand grain), derived from a basalt score. Vesicles (air bubbles) can be seen throughout the clast. Plane light above, cross polarized light below. Scale box is 0.25 mm Clastic rocks are composed of fragments, or clasts … Wikipedia
breccia — /brech ee euh, bresh /, n. Petrol. rock composed of angular fragments of older rocks melded together. [1765 75; < It < Gmc; cf. OHG brecha breaking] * * * Coarse sedimentary rock consisting of angular or nearly angular fragments larger than 0. 08 … Universalium
Breccia — (pronEng|ˈbrɛtʃiə, ˈbrɛʃiə, it. breach) is a rock composed of angular fragments of several minerals or rocks in a matrix, that is a cementing material, that may be similar or different in composition to the fragments. A breccia may have a variety … Wikipedia
Moon rock — Olivine basalt collected by Apollo 15. Moon rock describes rock that formed on the Earth s moon. The term is also loosely applied to other lunar materials collected during the course of human exploration of the Moon. The rocks collect … Wikipedia
Hummock — A hummock (of uncertain derivation; cf. hump or hillock) is a boss or rounded knoll of ice rising above the general level of an ice field, making sledge travelling in the Arctic and Antarctic region extremely difficult and unpleasant.Hummocky ice … Wikipedia
Metaconglomerate — Jurassic metaconglomerate at Los Peñasquitos Canyon Preserve, San Diego County, California. Metaconglomerate is a rock type which originated from conglomerate after undergoing metamorphism. Conglomerate is easily identifiable by the pebbles or… … Wikipedia
