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Palaeomagnetism and the age of the Cracow volcanic rocks (S Poland)

Nawrocki, J.; Fanning, Christopher; Lewandowska, A.; Polechonska, O.; Werner, T.

Description

Permian rhyodacites, melaphyres and tuffs from the Cracow area (South Poland) were sampled for the palaeomagnetic and isotope studies. Single-grain U-Pb dating of most zircon grains separated from the rhyodacites gave mean age of magma emplacement of 294.2 ± 2.1 Ma. Some zircons, however, displayed younger ages (268.7 ± 3.4 Ma), probably related to the metasomatic alterations of these rocks. Two Permian components of magnetizations related to these processes were isolated and together with...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
URI: http://hdl.handle.net/1885/37758
Source: Geophysical Journal International
DOI: 10.1111/j.1365-246X.2008.03804.x

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