argillite

• Rocha sedimentar argilosa mais fortemente cimentada por sílica do que o folhelho, sem a xistosidade típica deste.

A sedimentary rock that is more firmly cemented by silica than shale and lacks the cleavage characteristic of slate.

incontável

1. C2formalscientific

   A fine-grained sedimentary rock composed mainly of clay minerals, bound by silica, and lacking the cleavage characteristic of slate.

   Argilito

   • The geologist identified the sample as argillite due to its silica binding.
   • Argillite is often used in carving by Indigenous artists in the Pacific Northwest.
   • Unlike slate, argillite does not split into thin layers.

   Sinônimosclaystone