Publication details
Valounové analýzy glacifluviálních sedimentů na lokalitě Stará kaolínová jáma u Vidnavy na Jesenicku
| Title in English | Clast petrological analyses of the glaciofluvial sediments at the Old Kaolin Mine near Vidnava locality in the Jeseník Region |
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| Authors | |
| Year of publication | 2009 |
| Type | Article in Periodical |
| Magazine / Source | Časopis Slezského zemského muzea |
| MU Faculty or unit | |
| Citation | |
| Field | Geology and mineralogy |
| Keywords | glaciofluvial sediments, clast petrology and provenance, Scandinavian-Baltic limestone clasts, second Elsterian glaciation, Jeseník Region, Czech Republic |
| Description | Gravel clast petrology of the two through bedded gravely sand beds and one massive gravel bed from the second Elsterian glaciofluvial sediments at the Old Kaolin Mine near Vidnava was analysed. The proportion of Nordic clasts in these sediments is 22–29% and ~27% in the 16–64 mm and 8–16 mm respectively. The most common within the group of Nordic rocks are Ordovician and Silurian Scandinavian-Baltic limestones, their shares are 38–57.5% and ~61.5% in the 16–64 mm and 8–16 mm respectively. The near (Polish) clasts are represented mainly by Sudeten porphyry, silicites and sandstones. Locally derived clasts originated in the crystalline units adjoining to the studied site, with the dominance of gneisses, quartzites, Žulová massif granitoids and amphibolites. The share of quartz clasts is ~20% and ~25% in the 16–64 mm and 8–16 mm respectively. |