Flood gravels within the seam Antonín of the Marie mine in the Sokolov brown coal Basin

Geoscience Research Reports 38, 2005 (GRR for 2004), pages 34–35

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Abstract

A sharply delimitated up to 1.5 m thick layer of polymictic gravel occurs within the Miocene brown coal seam Antonín in the face of the horizon 395 of the open-pit mine Marie at Sokolov-Královské Poříčí, NW-Bohemia. Even though sporadic coarsely grained detritic sediments are known from the top of the coal seam on the periphery of the Basin, gravels in its inner part and especially inside the seam represent a rarity. Their well rounded pebbles sized up to 9 cm consist of quartz, granite, gneiss and Cenozoic alkaline basaltic rocks and were evidently transported from the southern coastal foreground during a sudden flash-water event.