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

Faulted southern margin of the Bohemian Cretaceous Basin in the Kounice area


Miroslav Coubal

Geoscience Research Reports 43, 2010 (GRR for 2009), pages 27–30

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The role of faults in the present delimitation of the southern margin of the Bohemian Cretaceous Basin and in the Elbe valley formation can be well defined in the broader area of Kounice. The Vykân Flexure, showing a drop of the NNE block by 50-100 m, now forms the boundary between the Upper Cretaceous sedimentary basin fill and its relics of reduced thickness in the southern foreland of the basin. The flexure is cut by the E-W-striking Kounice and Mochov Faults, which show clear signs of right-lateral strike-slip displacement. All these faults contribute to the vertical difference in the altitude of the Cretaceous base by ca. 200 m between the marginal part of the basin fill and the relic sediments farther to the south.