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Publication details

Document type
Journal articles

Document subtype
Full paper

Title
Visean high-K mafic–intermediate plutonic rocks of the Ossa–Morena Zone (SW Iberia): implications for regional extensional tectonics

Participants in the publication
M. Francisco Pereira (Author)
Ícaro Dias da Silva (Author)
Dep. Geologia
 IDL
 IDL
 IDL
 Cármen Rodríguez (Author)
Fernando Corfu (Author)
António Castro (Author)

Summary
Field relationships and new U–Pb geochronology data indicate a temporal link between the diverse high-K mafic–intermediate magmas of the Ossa–Morena Zone (OMZ). Ages of c. 338–335 Ma for the Vale de Maceiras gabbro and the Campo Maior microdiorite and quartz-diorite indicate that plutonism took place during a Variscan extensional D2 deformation event in the OMZ. The syntectonic nature of the Vale de Maceiras pluton is attested to by the orientation of intrusive contacts, magmatic foliation and the growth of contact metamorphic minerals in relation to the Variscan extensional D2 foliation. The Campo Maior microdiorite, quartz-diorite and orthomigmatites are temporally linked to high-temperature mylonitic gneisses formed simultaneously with the Variscan extensional D2 deformation event. The geochemical features of the Vale de Maceiras and Campo Maior mafic–intermediate rocks show an affinity with the sanukitoid series. This finding suggests that the observed geochemical variability, from tholeiitic to calc-alkaline and sanukitoid, in the Visean OMZ plutonic rocks (c. 349–335 Ma) may have been inherited from partially melted mantle domains that were previously contaminated by crustal melts during subduction. https://www.lyellcollection.org/doi/abs/10.1144/SP531-2022-118

Date of Publication
2023-01-30

Where published
Geological Society, London, Special Publications

Publication Identifiers
ISSN - 0305-8719

Address
London

Publisher
Geological Society of London

Volume
531
Number
1

Document Identifiers
DOI - https://doi.org/10.1144/sp531-2022-118
URL - http://dx.doi.org/10.1144/sp531-2022-118

Rankings
SCIMAGO Q1 (2021) - 0,74 - Geology
SCOPUS Q1 (2021) - 6 - Geology
SCIMAGO Q2 (2020) - 0.673 - Geology
SCOPUS Q1 (2020) - 5.4 - Geology

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APA
M. Francisco Pereira, Ícaro Dias da Silva, Cármen Rodríguez, Fernando Corfu, António Castro, (2023). Visean high-K mafic–intermediate plutonic rocks of the Ossa–Morena Zone (SW Iberia): implications for regional extensional tectonics. Geological Society, London, Special Publications, 531, ISSN 0305-8719. eISSN . http://dx.doi.org/10.1144/sp531-2022-118

IEEE
M. Francisco Pereira, Ícaro Dias da Silva, Cármen Rodríguez, Fernando Corfu, António Castro, "Visean high-K mafic–intermediate plutonic rocks of the Ossa–Morena Zone (SW Iberia): implications for regional extensional tectonics" in Geological Society, London, Special Publications, vol. 531, 2023. 10.1144/sp531-2022-118

BIBTEX
@article{57068, author = {M. Francisco Pereira and Ícaro Dias da Silva and Cármen Rodríguez and Fernando Corfu and António Castro}, title = {Visean high-K mafic–intermediate plutonic rocks of the Ossa–Morena Zone (SW Iberia): implications for regional extensional tectonics}, journal = {Geological Society, London, Special Publications}, year = 2023, volume = 531 }