Tonschiefer /SCIENCE/
[DE] Tonschiefer
[EN] clay slate
[FR] ardoise argileuse
Tonschiefer /SCIENCE/
[DE] Tonschiefer
[EN] argillaceous schist; argillaceous shale; underclay
[FR] schiste argileux
Schiefer,Tonschiefer /SCIENCE/
[DE] Schiefer; Tonschiefer
[EN] shale
[FR] argile litée; schiste argileux