Late Permian volcanic dykes in the crystalline basement of the Považský Inovec Mts. (Western Carpathians): U–Th–Pb zircon SHRIMP and monazite chemical dating
Published: Dec 2017
Pages: 530 - 542
DOI: https://doi.org/10.1515/geoca-2017-0035
Authors: ONDREJ PELECH, ANNA VOZÁROVÁ, PAVEL UHER, IGOR PETRÍK, DUŠAN PLAŠIENKA, KATARÍNA ŠARINOVÁ, NIKOLAY RODIONOV
Abstract: This paper presents geochronological data for the volcanic dykes located in the northern Považský Inovec Mts. The dykes are up to 5 m thick and tens to hundreds of metres long. They comprise variously inclined and oriented lenses, composed of strongly altered grey-green alkali basalts. Their age was variously interpreted and discussed in the past. Dykes were emplaced into the Tatricum metamorphic rocks, mostly consisting of mica schists and gneisses of the Variscan (early Carboniferous) age. Two different methods, zircon SHRIMP and monazite chemical dating, were applied to determine the age of these dykes. U–Pb SHRIMP dating of magmatic zircons yielded the concordia age of 260.2 ± 1.4 Ma. The Th–U–Pb monazite dating of the same dyke gave the CHIME age of 259 ± 3Ma. Both ages confirm the magmatic crystallization at the boundary of the latest Middle Permian to the Late Permian. Dyke emplacement was coeval with development of the Late Paleozoic sedimentary basin known in the northern Považský Inovec Mts. and could be correlated with other pre-Mesozoic Tethyan regions especially in the Southern Alps.
Keywords: Permian volcanism, dykes, zircon dating, monazite dating, Western Carpathians, Tatricum
Download PDF document
Volume 68 no. 6 / December 2017
VLADIMIR V. ARKADIEV, VLADIMIR A. GRISHCHENKO, ANDREI YU. GUZHIKOV, ALEKSEY G. MANIKIN, YULIYA N. SAVELIEVA, ANNA A. FEODOROVA, OLGA V. SHUREKOVA
Ammonites and magnetostratigraphy of the Berriasian–Valanginian boundary deposits from eastern Crimea
YULIYA N. SAVELIEVA, OLGA V. SHUREKOVA, ANNA A. FEODOROVA, VLADIMIR V. ARKADIEV , VLADIMIR A. GRISHCHENKO, ANDREI YU.GUZHIKOV , ALEKSEY G. MANIKIN
Microbiostratigraphy of the Berriasian–Valanginian boundary in eastern Crimea: foraminifers, ostracods, organic-walled dinoflagellate cysts
ONDREJ PELECH, ANNA VOZÁROVÁ, PAVEL UHER, IGOR PETRÍK, DUŠAN PLAŠIENKA, KATARÍNA ŠARINOVÁ, NIKOLAY RODIONOV
Late Permian volcanic dykes in the crystalline basement of the Považský Inovec Mts. (Western Carpathians): U–Th–Pb zircon SHRIMP and monazite chemical dating
BOŠTJAN ROŽIČ, TEA KOLAR JURKOVŠEK, PETRA ŽVAB ROŽIČ, LUKA GALE
Sedimentary record of subsidence pulse at the Triassic/Jurassic boundary interval in the Slovenian Basin (eastern Southern Alps)
PIOTR STRZEBOŃSKI, JUSTYNA KOWAL-KASPRZYK, BARBARA OLSZEWSKA
Exotic clasts, debris flow deposits and their significance for reconstruction of the Istebna Formation (Late Cretaceous – Paleocene, Silesian Basin, Outer Carpathians)
ZDENĚK VAŠÍČEK, DANIELA REHÁKOVÁ, PETR SKUPIEN
Some perisphinctoid ammonites of the Štramberk Limestone and their dating with associated microfossils (Tithonian to Lower Berriasian, Outer Western Carpathians, Czech Republic)