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Magnetic fabric in folds of the easternmost Rheno-Hercynian Zone
Institution:1. AGICO Inc., Brno, Czech Republic;2. Institute of Petrology and Structural Geology, Charles University, Praha, Czech Republic;3. Czech Geological Survey, Brno, Czech Republic;1. Institute of Geophysics, Czech Academy of Sciences, Bo?ní II 1a/1401, 141 31, Prague, Czechia;2. Center for Lithospheric Research, Czech Geological Survey, Klárov 3, 118 21, Prague, Czechia;3. 18 rue des roseaux, 67201, Eckbolsheim, France;4. Institut de Physique du Globe de Strasbourg, IPGS – UMR 7516, CNRS et Université de Strasbourg, Strasbourg, France;5. Agico Co., Je?ná 29a, Brno, 621 00, Czechia;1. Department of Earth Sciences, Western University, London, Ontario N6A 5B7, Canada;2. State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi''an 710069, China;1. Institute of Geology, University of Innsbruck, Innrain 52, 6020 Innsbruck, Austria;2. Centre for Climate, The Environment and Chronology (14CHRONO), School of Natural and Built Environment, Queen?s University Belfast, Belfast BT7 1NN, UK;3. Natural History Museum Vienna, Geological-Palaeontological Department, Burgring 7, 1010 Vienna, Austria;1. Maria Curie-Sk?odowska University, Faculty of Earth Sciences and Spatial Management, Kra?nicka 2cd, 20-718 Lublin, Poland;2. Department of Geological Sciences, Faculty of Science, Masaryk University, Kotlá?ská 267/2, 611 37 Brno, Czech Republic;3. Polish Geological Institute – NRI, Warszawa, Rakowiecka 4, 00-975, Poland
Abstract:The magnetic fabric in folds was investigated in the easternmost Rheno-Hercynian Zone, the Nízký Jeseník Mts. In their eastern areas, the rocks show signs of only weak achimetamorphism and very gentle ductile deformation; SE vergent buckle folds of long wavelength are developed whose magnetic fabric can be easily unfolded geometrically. In the central areas, spaced cleavage and NW vergent buckle folds can be found; the folds can be unfolded mostly only partially. In the western areas, NW vergent cleavage folds and very well developed slaty cleavage occur. The magnetic fabric in the folds is homogeneous, the folds cannot be unfolded at all. The cleavage is transformed into metamorphic schistosity at the western border of the area.
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