bn:01491362n
Noun Concept
Categories: Geologic formations of Norway, Cambrian System of Europe, Ordovician southern paleotemperate deposits, Paleozoic Denmark, Ordovician Norway
EN
alum shale  Alum Shale Formation  alum schist
EN
The Alum Shale Formation is a formation of black shale of Middle Cambrian to Tremadocian in age found predominantly in southern Scandinavia. Wikipedia
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EN
The Alum Shale Formation is a formation of black shale of Middle Cambrian to Tremadocian in age found predominantly in southern Scandinavia. Wikipedia
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