粉砂岩

fěnshāyán

noun

Meanings

1 siltstone (sedimentary rock made of silt-sized particles, between sandstone and mudstone in grain size)

Characters

Examples

这片地区主要由粉砂岩组成。

Zhè piàn dìqū zhǔyào yóu fěnshāyán zǔchéng.

This region is mainly made up of siltstone.

粉砂岩比砂岩颗粒更细。

Fěnshāyán bǐ shāyán kēlì gèng xì.

Siltstone has finer grains than sandstone.

Tips

usage

Geology textbook word. The 粉 (fěn, powder) marks finer grain than plain 砂岩 (shāyán, sandstone). The series goes 砾岩 (lìyán, conglomerate) → 砂岩 (sandstone) → 粉砂岩 (siltstone) → 泥岩 (níyán, mudstone) by decreasing particle size.

Stroke Order

粉 fěn

砂 shā

岩 yán