Tournaisian age of granitoids from the Odra Fault Zone (southwestern Poland): equivalent of the Mid-German Crystalline High?
Issue Title: Simulation and visualization of geoprocesses The Odra Fault Zone of southwestern Poland is a NW-trending horst marked by gravimetric and magnetic anomalies and composed of high- to low-grade metamorphic and igneous rocks which are only known from boreholes. This zone embraces a conceale...
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Published in | International journal of earth sciences : Geologische Rundschau Vol. 95; no. 2; pp. 341 - 349 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Berlin
Springer Nature B.V
01.04.2006
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Subjects | |
Online Access | Get full text |
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Summary: | Issue Title: Simulation and visualization of geoprocesses The Odra Fault Zone of southwestern Poland is a NW-trending horst marked by gravimetric and magnetic anomalies and composed of high- to low-grade metamorphic and igneous rocks which are only known from boreholes. This zone embraces a concealed border between Variscan internides and externides. It also contains an array of several I-type, metaluminous to peraluminous, high potassic granitoid bodies which intruded earlier metamorphosed rocks. Except for one case, they remain unfoliated and undeformed, and presumably play a role of stitching plutons at the suture between two obliquely colliding terranes. U-Pb TIMS dating of single zircons from one foliated and one unfoliated granitoid samples yielded identical concordant ages of 344±1 Ma (Tournaisian). They resemble a Pb-Pb age of 350±5 Ma obtained for S-type granitoids from the Luckau area further west in Germany, which is generally regarded as an eastern segment of the Mid-German Crystalline High. Carboniferous granitic intrusions in the high are generally younger (340-290 Ma). Correlations of the the Odra Fault Zone with the Mid-German Crystalline High appear plausible, but by no means certain and require further confirmation.[PUBLICATION ABSTRACT] |
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ISSN: | 1437-3254 1437-3262 |
DOI: | 10.1007/s00531-005-0044-8 |