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Late Miocene volcanic activity in the České středohoří Mountains, Ohře (Eger) Graben, northern Bohemia
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SYSNO ASEP 0334700 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Late Miocene volcanic activity in the České středohoří Mountains, Ohře (Eger) Graben, northern Bohemia Title Vulkanická aktivita v Českém středohoří (Ohře, severní Čechy) v pozdním miocénu Author(s) Cajz, Vladimír (GLU-S) RID, SAI, ORCID
Rapprich, V. (CZ)
Erban, V. (CZ)
Pécskay, Z. (HU)
Radoň, M. (CZ)Source Title Geologica Carpathica. - : Slovenská akadémia vied - ISSN 1335-0552
Roč. 60, č. 6 (2009), s. 519-533Number of pages 15 s. Publication form WWW - WWW Language eng - English Country SK - Slovakia Keywords Upper Miocene ; České středohoří Mts. ; volcanostratigraphy ; Štrbice Formation ; geochemistry ; K-Ar dating ; cinder cone ; basanite Subject RIV DB - Geology ; Mineralogy R&D Projects IAA300130612 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z30130516 - GLU-S (2005-2011) UT WOS 000274039600007 EID SCOPUS 75449091027 DOI 10.2478/v10096-009-0038-8 Annotation First occurrences of superficial bodies of Late Miocene volcanic activity were found in the w. part of the České středohoří Volcanic Complex. Their K-Ar ages (9.59, 9.61 and 11.36 Ma) correspond to the age of alkaline basaltic rocks of the youngest known Intrusive System of this area. These bodies are represented by superficial products: two scoria cones with remnants of lava flows and one exclusive lava flow produced from a lava cone. Their primitive (basanitic) chemical composition, Sr (0.70347 – 0.70361) and Nd (0.51279 – 0,51284) isotope ratios are similar to the products of the first and third volcanic formation of the CSVC. The proved existence of superficial products, together with clear superposition relations to sedimentary formations and the chemical character of the youngest magmas support the stratigraphic scheme of volcanic activity in the České středohoří Mts. Eruptive style of the youngest formation volcanoes was purely magmatic (Strombolian) with no phreatic influence. Workplace Institute of Geology Contact Jana Popelková, popelkova@gli.cas.cz, Sabina Janíčková, Tel.: 233 087 272 Year of Publishing 2010
Number of the records: 1