Definition of clast in English:

clast

nounklastklast

Geology

A constituent fragment of a clastic rock.
〔地质〕（碎屑岩的）碎屑
Example sentencesExamples
- Geochemical analyses of these clasts show that the eruption tapped two chemically distinct rhyolitic magmas.
- This is substantiated by the presence of eroded Permian carbonate clasts.
- The clasts in volcaniclastic rocks may range from fine ash to bombs and enormous blocks.
- The siltstones contain poorly sorted angular fragments of quartz, and angular clasts and cleavage fragments of plagioclase and alkali feldspar.
- The conglomerates contain a mixture of basement-derived clasts and large Upper Permian limestone clasts.

Origin

1930s: back-formation from clastic.

Definition of clast in US English:

clast

nounklast

Geology

A constituent fragment of a clastic rock.
〔地质〕（碎屑岩的）碎屑
Example sentencesExamples
- The clasts in volcaniclastic rocks may range from fine ash to bombs and enormous blocks.
- Geochemical analyses of these clasts show that the eruption tapped two chemically distinct rhyolitic magmas.
- This is substantiated by the presence of eroded Permian carbonate clasts.
- The conglomerates contain a mixture of basement-derived clasts and large Upper Permian limestone clasts.
- The siltstones contain poorly sorted angular fragments of quartz, and angular clasts and cleavage fragments of plagioclase and alkali feldspar.

Origin

1930s: back-formation from clastic.

单词	clast
释义	Definition of clast in English: clast nounklastklast Geology A constituent fragment of a clastic rock. 〔地质〕（碎屑岩的）碎屑 Example sentencesExamples Geochemical analyses of these clasts show that the eruption tapped two chemically distinct rhyolitic magmas. This is substantiated by the presence of eroded Permian carbonate clasts. The clasts in volcaniclastic rocks may range from fine ash to bombs and enormous blocks. The siltstones contain poorly sorted angular fragments of quartz, and angular clasts and cleavage fragments of plagioclase and alkali feldspar. The conglomerates contain a mixture of basement-derived clasts and large Upper Permian limestone clasts. Origin 1930s: back-formation from clastic. Definition of clast in US English: clast nounklast Geology A constituent fragment of a clastic rock. 〔地质〕（碎屑岩的）碎屑 Example sentencesExamples The clasts in volcaniclastic rocks may range from fine ash to bombs and enormous blocks. Geochemical analyses of these clasts show that the eruption tapped two chemically distinct rhyolitic magmas. This is substantiated by the presence of eroded Permian carbonate clasts. The conglomerates contain a mixture of basement-derived clasts and large Upper Permian limestone clasts. The siltstones contain poorly sorted angular fragments of quartz, and angular clasts and cleavage fragments of plagioclase and alkali feldspar. Origin 1930s: back-formation from clastic.
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