bn:17404938n
Noun Concept
Categories: Oil shale geology, Geology of Estonia, Oil shale in Estonia
EN
Graptolitic argillite  dictyonema argillite  dictyonema oil shale  dictyonema shale  dictyonema slate
EN
Graptolitic argillite is a marinite-type black shale of sapropelic origin. Wikipedia
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EN
Graptolitic argillite is a marinite-type black shale of sapropelic origin. Wikipedia
Sedimentary rock found in Estonia Wikidata