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Ordovician
(19 entries)
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Cross section of shelly phosphorite from Ülgase, Estonia
by Sophie Graul
Cross-section of a brachiopod from the shelly phosphorite of Estonia, former Ülgase mine
by Sophie Graul
Eclogite from la Compointrie, Les Essarts complex, Vendée, France.
by Sophie Graul
Section of a drillcore containing Tremadocian black-shale
by Sophie Graul
Shelly phosphorites from the Aseri deposit.
by Sophie Graul
Thin section in PPL of shelly phosphorite from the Ülgase deposit, Estonia.
by Sophie Graul
Thin section in PPL of shelly phosphorite from the Ülgase deposit, Estonia.
by Sophie Graul
Shelly phosphorite from the Aseri deposit, Estonia.
by Sophie Graul
Pyritised brachiopod shell fragment from the Toolse phosphorite deposit, Estonia.
by Sophie Graul
Pyritised brachiopod shell fragment from the Toolse phosphorite deposit, Estonia.
by Sophie Graul
Carbonate-cemented shelly phosphorite
by Sophie Graul
Microphotograph of a calcite geode found in a glendonite structure
by Sophie Graul
Shelly phosphorite drill core
by Sophie Graul
Estonian shelly phosphorites
by Sophie Graul
Glendonite's insides 2
by Sophie Graul
Glendonite's insides
by Sophie Graul
Calcite and oxides inside a glendonite masse
by Sophie Graul
Iridescent shelly phosphorite from Estonia
by Sophie Graul
Senhora do Salto Fold
by Nuno Correia
