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Source of K-Feldspars and Kaolinitization in Arkoses of West and Central Bohemian Continental Permo–Carboniferous Cover

Source of K-Feldspars and Kaolinitization in Arkoses of West and Central Bohemian Continental Permo–Carboniferous

Open Access
|Mar 2022

Abstract

The examined K-feldspars in arkoses of the continental Upper Carboniferous – Lower Permian of the West and Central Bohemian basins originated in the whole bed sequence (Duckmantian to Autunian; 314.2–297.1 Ma) from one source, which were so-called mountain granites of the older intrusive complex (OIC) of the Krušné hory Mts, as confirmed by the X-ray and geochemical analyses. The presence of feldspar clasts from other granitoids (Merklín and Louny massifs) was found only in the straight transgreding basal Carboniferous rocks. While other arkoses underwent synsedimentary and/or post-sedimentary kaolinization, in the deposits of Kaznějov and Horní Bříza (Nýřany Member of the Kladno Formation) pre-sedimentary kaolinization (sedimentation of sandstones and conglomerates with kaolinitic cement) occurred.

DOI: https://doi.org/10.2478/fbgp-2021-0002 | Journal eISSN: 1805-286X | Journal ISSN: 1805-2371
Language: English
Page range: 23 - 37
Published on: Mar 7, 2022
Published by: West Bohemian Museum in Pilsen
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year

© 2022 Jiří Jiránek, Josef Klomínský, Jana Jiránková, published by West Bohemian Museum in Pilsen
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.