TERÉNNÍ A LABORATORNÍ DOKUMENTACE STAVEBNÍHO ODKRYVU NA ZÁPADNÍM OKRAJI BĚLOTÍNA, MORAVSKÁ BRÁNA

• Main Authors: Gába, Zdeněk, Vašíčková, Jarmila, Matýsek, Dalibor, Rozehnal, Tomáš
• Format: Article in Journal/Newspaper
• Language: Czech
• Published: Masaryk University 2016
• Subjects: Moravian Gate; European watershed; pebble and RTG analyses; opal silicite; Menilitic formation; Ice Sheet
• Online Access: https://journals.muni.cz/gvms/article/view/4820

A pebble sample collected near the critical sector of the Moravian Gate was analyzed. The clasts come from the upper part of the Lower Badenian marine sand and the pebbles scattered on the surface in the W environs of Belotin village (close to the European watershed between the Baltic and Black sea) where the overflow of the divide by the scandinavian ice sheet is still open to debate. The pebble petrology is a simple one, the clasts being composed mostly of sandstone and silicite with some quartz admixture. Most important for palaeogeographic interpretation are silicites, which might indicate nordic or local source. The microscopic study as well as RTG analyses proved a local provenance of opal silicites from the Menilitic formation (Carpathian Oligocene). A pebble sample collected near the critical sector of the Moravian Gate was analyzed. The clasts come from the upper part of the Lower Badenian marine sand and the pebbles scattered on the surface in the W environs of Belotin village (close to the European watershed between the Baltic and Black sea) where the overflow of the divide by the scandinavian ice sheet is still open to debate. The pebble petrology is a simple one, the clasts being composed mostly of sandstone and silicite with some quartz admixture. Most important for palaeogeographic interpretation are silicites, which might indicate nordic or local source. The microscopic study as well as RTG analyses proved a local provenance of opal silicites from the Menilitic formation (Carpathian Oligocene).