Calcium enriched rocks in the Neoproterozoic sequence, Lešetice uranium mine, Příbram ore district

 

Authors: Vlašímský P

Published in: Bulletin of Geosciences, volume 75, issue 3; pages: 261 - 264;

Keywords: Neoproterozoic, flysch, volcaniclastics, carbonate rocks, calcsilicate rocks, contact metamorphism, Barrandian,

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Abstract

In the uppermost lithostratigraphic units of the Barrandian Proterozoic two types of calcic rocks have been distinguished: carbonatized tuffs with transition into crystalline limestones on one hand and calcium silicates enriched rocks on the other. Textures and composition of these rocks were influenced considerably by contact metamorphism and hydrothermal alteration. These rocks occur in the First shale belt of the Proterozoic sequence.