Evolution of microstructure and texture in small-scale high-temperature shear zone in marble from Ossa Morena Zone (Iberian Variscan Belt)
Machek, Matěj (Institute of Geophysics (República Txeca))
Roxerová, Zuzana (Institute of Geophysics (República Txeca))
Kusbach, Vladimír K. (Institute of Geophysics (República Txeca))
Kučeráková, Monika (Czech Technical University (República Txeca))
Vratislav, Stanislav (Czech Technical University (República Txeca))

Date:	2025
Abstract:	This research investigates microstructures and crystallographic preferred orientation in a high-temperature Variscan small-scale shear zone within marbles from the south-western Ossa-Morena Zone (Iberian Variscan Belt). Quantitative microstructural analysis, and crystallographic preferred orientation data obtained via neutron diffraction and electron backscatter diffraction mapping allowed to infer the deformation mechanisms and active slip systems. The primary S2 foliation fabric formed during the Variscan D2 deformation phase, is characterized by high-temperature grain boundary migration recrystallization mechanism, coupled with intracrystalline slip on the c(0001)<-12-10.
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre i quan aquestes es distribueixin sota la mateixa llicència que regula l'obra original i es reconegui l'autoria.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Calcite microstructure ; High-temperature shear zone ; Crystallographic preferred orientation ; Grain boundary migration recrystallization ; Deformation mechanism
Published in:	Geologica acta, Vol. 23 (2025) (Articles) , ISSN 1696-5728

Adreça original: https://revistes.ub.edu/index.php/GEOACTA/article/view/50257
Adreça alternativa: https://raco.cat/index.php/GeologicaActa/article/view/980000000841
DOI: 10.1344/GeologicaActa2025.23.24

22 p, 38.6 MB

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