An Upper Ediacaran Glacial Period in Cadomia: the Granville tillite (Armorican Massif) – sedimentology, geochronology and provenance

In the Cadomian orogenic belt a package of glacigenic sedimentary deposits have been recently described in the Armorican Massif (Normandy, France). The Granville Tillite Member, the middle part of the upper Granville Formation, is late Ediacaran in age. Maximum depositional ages of the pre- and syn-...

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Veröffentlicht in:	Geological magazine 2022-07, Vol.159 (7), p.999-1013
Hauptverfasser:	Linnemann, Ulf, Hofmann, Mandy, Gärtner, Andreas, Gärtner, Jessica, Zieger, Johannes, Krause, Rita, Haenel, Robert, Mende, Katja, Ovtcharova, Maria, Schaltegger, Urs, Vickers-Rich, Pat
Format:	Artikel
Sprache:	eng
Schlagworte:	absolute age Africa Age ancient ice ages Armorican Massif C-13/C-12 Cadomian Orogeny carbon Cratons depositional environment Deposits Earth Ediacaran Europe France Geochronology Geochronometry Glacial deposits glacial environment glacial geology Glacial periods Glaciation Glaciers Glaciology glaciomarine environment Gondwana Granville Tillite Gravel Horizon Ice ages ICP mass spectra Interglacial periods isotope ratios isotopes laser ablation laser methods Lead marine environment mass spectra Massifs Neoproterozoic Normandy Original Article Orogeny Palaeolatitude paleoenvironment Paleolatitude Precambrian Proterozoic provenance Radiometric dating Sediment Sediment deposits sedimentary structures Sedimentology Sediments spectra stable isotopes Stratigraphy U/Pb Uplift upper Precambrian West African Craton Western Europe Zircon
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