| GRABOWSKI, Jacek, Ondřej BÁBEK, Jerzy NAWROCKI a Čestmír TOMEK. New palaeomagnetic data from the Palaeozoic carbonates of the Moravo-Silesian Zone (Czech Republic): evidence for a timing and origin of the late Variscan remagnetization. Geological Quarterly. Warszawa, 2008, roč. 52, č. 4, s. 321-334. ISSN 1641-7291. |
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@article{821836,
author = {Grabowski, Jacek and Bábek, Ondřej and Nawrocki, Jerzy and Tomek, Čestmír},
article_location = {Warszawa},
article_number = {4},
keywords = {Czech Republic; Moravo-Silesian Zone; palaeomagnetism; remagnetization},
language = {eng},
issn = {1641-7291},
journal = {Geological Quarterly},
title = {New palaeomagnetic data from the Palaeozoic carbonates of the Moravo-Silesian Zone (Czech Republic): evidence for a timing and origin of the late Variscan remagnetization},
volume = {52},
year = {2008}
}
TY - JOUR
ID - 821836
AU - Grabowski, Jacek - Bábek, Ondřej - Nawrocki, Jerzy - Tomek, Čestmír
PY - 2008
TI - New palaeomagnetic data from the Palaeozoic carbonates of the Moravo-Silesian Zone (Czech Republic): evidence for a timing and origin of the late Variscan remagnetization
JF - Geological Quarterly
VL - 52
IS - 4
SP - 321-334
EP - 321-334
SN - 16417291
KW - Czech Republic
KW - Moravo-Silesian Zone
KW - palaeomagnetism
KW - remagnetization
N2 - Palaeomagnetic studies were carried out in the Devonian to Early Carboniferous carbonates of the Moravo-Silesian Zone: MSZ (Czech Republic) in order to evaluate the timing and origin of late Variscan magnetic overprinting. Sampling localities were spread out along the strike of the MSZ from the SW to NE. Previously published thermal maturity data have demonstrated a significant gradient from SW (burial temperatures 150 to 200 deg.C) to NE of the region (250 to 300 deg.C). A late Variscan remagnetization direction (component A), carried by magnetite, was identified in 6 localities. Three phases of the remagnetization in the MSZ might be distinguished which might be assigned to Early to Late Carboniferous, Late Carboniferous and Early Permian. They are coeval with remagnetization events distinguished in Ardennes. A correlation exists between thermal indices and unblocking temperature spectra of component A. Thermal activation nomograms show that component A might be either a thermoviscous or thermochemical remanent magnetization acquired due to a thermal event (deep burial) of 1 to 10 My duration and stabilized during subsequent up lift. A more ancient component B, identified in the SW part, previously interpreted as primary, is shown to be a synfolding remagnetisation. It indicates 70 deg. clock wise rotations before the acquisition of the component A.
ER -
GRABOWSKI, Jacek, Ondřej BÁBEK, Jerzy NAWROCKI a Čestmír TOMEK. New palaeomagnetic data from the Palaeozoic carbonates of the Moravo-Silesian Zone (Czech Republic): evidence for a timing and origin of the late Variscan remagnetization. \textit{Geological Quarterly}. Warszawa, 2008, roč.~52, č.~4, s.~321-334. ISSN~1641-7291.
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