Publisher © Czech Geological Survey, ISSN: 2336-5757 (online), 0514-8057 (print)

Temporary outcrop of the Letná and Vinice formations (Upper Ordovician, Berounian) in the NE part of the Prague (Černý Most)


Petr Budil, Petr Kraft, Jaroslav Kraft

Geoscience Research Reports 38, 2005 (GRR for 2004), pages 23–25
Map sheets: Praha (12-24)

Full text (PDF, 1.24 MB)



A unique temporary outcrop of the boundary between Letná and Vinice formations in the northeastern part of the Prague Basin (Praha-Cerný Most) has been documented. Shallow-water development of both formations is presumed based both on lithological data - from prevailing siltstones and fine-grained sandstones with subordinate intercalations of claystones and oolitic pelosiderites in the lower parts of the Vinice Formation, and fossil record - of shallow-water dendroids. The boundary between both formations is concordant, affected by local tectonics only. It suggest a different view at to the role of tectonics in the studied area in contrast to that interpreted in geological maps 1 : 25,000.