siltstones

siltstones

美 　英

• 網絡粉沙巖

例句

The graptolites are generally preserved as films in mudstones or muddy siltstones at the depths of thousands meters beneath the surface.

這些筆石標本一般保存成薄膜狀于數千米之下的泥巖或泥質粉砂巖之中。