Lower Cambrian (Atdabanian/Botomian) Shallow-Marine carbonates of the Görlitz Synclinorium (Saxony/Germany) |
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Authors: | Dipl-Geol Olaf Elicki Prof Dr Jörg Schneider |
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Institution: | 1. Bergakademie Freiberg, Institut für Geologie, Bernhard-von-Cotta-Stra?e 2, D(O)-9200, Freiberg, F.R.G.
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Abstract: | Summary Geological, papaeontological and microfacies studies in the Lower Cambrian carbonate complex of the G?rlitz Synclinorium (eastern
Germany/Saxony/Lusatian region) provide new data for the fossil content, depositional history and palaeogeography. The Lower
Cambrian of the G?rlitz Synclinorium belongs to the facies zones 5, 7 and 8 ofWilson (1975)-platform rim with connections to the open ocean and to the restricted platform areas. An extraordinarily rich fauna
was found with elements which are in some cases new for Europe (Rhombocorniculum cancellatum
Cobbold,Fordilla sibirica
Krasilova, Calodiscus lobatus Hall,Archaeooides granulatus
Qian,Archiasterella pentactina
Sdzuy,Allonia sp.,Obliquatheca aldanica
Sysoiev,Conotheca circumflexa
Missarzhevsky,Microcornus elongatus
Missarzhevsky,Lenalituus sp.,Pelagiella cf.lorenzi
Kobayashi,Beshtashella sp.,Comluella sp.,Cambroclavithidae gen. et sp. indet., Helcionellidae gen. et sp., indet. Eocrinoidea gen. et sp. indet.) This fauna indicates Lower Cambrian
(higher Atdabanian/Botomian) age and reveals palaeobiogeographical connections to the Siberian Platform, to the Mediterranean
area and to China. A somewhat new stratigraphical subdivision of the Lower Cambrian sequence (Zwetau Formation) is described.
New units are established within the Ludwigsdorf Member (the carbonatic lower part of the sequence), the ‘Lower Ludwigsdorf
Member’ (massive dolostone) and the ‘Upper Ludwigsdorf Member’ (bedeed limestones and their equivalents). The subsequentLusatiops Member is subdivided intoSerrodiscus Bed (claystones) andLusatiops Bed (siltstones). |
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Keywords: | Microfacies Carbonates Small Shellyfossils Biostratigraphy Germany (G?rlitz Synclinorium) Lower Cambrian |
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