Evolution of microstructure and texture in a small-scale high-temperature marble shear zone from the Ossa-Morena Zone (Iberian Variscan Belt)
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F25%3A00642675" target="_blank" >RIV/67985530:_____/25:00642675 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21340/25:00389991
Result on the web
<a href="https://revistes.ub.edu/index.php/GEOACTA/article/view/50257" target="_blank" >https://revistes.ub.edu/index.php/GEOACTA/article/view/50257</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1344/GeologicaActa2025.23.24" target="_blank" >10.1344/GeologicaActa2025.23.24</a>
Alternative languages
Result language
angličtina
Original language name
Evolution of microstructure and texture in a small-scale high-temperature marble shear zone from the Ossa-Morena Zone (Iberian Variscan Belt)
Original language description
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, 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> system. Ductile shear zone development, marked by a coarse-grained microstructure with pronounced shape preferred orientation parallel to the shear plane, involved both high-temperature grain boundary migration recrystallization and intracrystalline dislocation creep, accommodated by f{-1012} <10-11> and r{10-14} <-2021> slip systems. These results indicate a high-temperature extensional origin for the S2 foliation and the shear zone formation during the D2 deformation event of the Ossa-Morena Zone, linked to thermal effects from the Beja Igneous Complex plutonism and regional partial melting driven by asthenosphere upwelling (~353–335Ma).
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10505 - Geology
Result continuities
Project
<a href="/en/project/GA22-12828S" target="_blank" >GA22-12828S: New perspectives in magnetic fabric interpretation through 3D microstructural analysis, numerical modelling and quantum mechanical description</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Geologica Acta
ISSN
1695-6133
e-ISSN
1696-5728
Volume of the periodical
23
Issue of the periodical within the volume
2025
Country of publishing house
ES - SPAIN
Number of pages
22
Pages from-to
1-17
UT code for WoS article
001621251700001
EID of the result in the Scopus database
2-s2.0-105023694176