clast


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clast

 (klăst)
n.
A rock fragment or grain resulting from the breakdown of larger rocks.

[From Greek klastos, broken, from klān, to break.]

clast

(klæst)
n
(Minerals) a fragment of (sedimentary) rock broken off from a larger rock

clast

(klæst)

n.
a fragment of a clastic rock formation.
[1950–55; probably back formation from clastic]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.clast - (geology) a constituent fragment of a clastic rock
geology - a science that deals with the history of the earth as recorded in rocks
clastic rock - (geology) a rock composed of broken pieces of older rocks
fragment - a piece broken off or cut off of something else; "a fragment of rock"
References in periodicals archive ?
Bulk samples collected from the profile were sieved into five size fractions (<2, 2-4, 4 8, 8 16, and >16mm) to separate rock clasts and Fe nodules of different sizes from the fine earth fraction.
In some sedimentary breccias, termed 'granite conglomerate', they are the dominant clast type.
It is noteworthy that CLAST members will save money in adopting hands-on, inquiry-driven science kit curricula.
The presence of extraformational clast within the Enugu Shale indicates that there was fluvial influence during the period of deposition of Enugu Shale within the Anambra Basin (Tucker, 1996).
According to Hallet, large rocks, or clasts, commonly freeze up through the soil.
Grain size (mm), classification, sorting, and dominant clast of sediment samples collected it Bahia Almejas during August 1999.
A terminal grade is the smallest grain size to which an entrained clast may be reduced by crushing and abrasion under a glacier.
Thickness, lithic content and clast angularity decrease from Alto Los Volcanes and El Mirador relieves towards N, E and S directions.
The WGD and Palivere Till have a lower clast content from local carbonaceous bedrock and significantly higher amounts of crystalline fabrics than the older Pandivere Till (Table 1).