Structure of a Variscan migmatite-granite transition zone (N Sardinia, Italy)
ABSTRACTThis paper presents the structural map of the Barrabisa Complex, an E-W ribbon-like migmatitic massif exposed in the northern part of Sardinia. The migmatites consist of metatexites and diatexites with variable melt proportion, grading in the central part of the complex to a foliated peralum...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2023-03-01
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| Series: | Journal of Maps |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/17445647.2023.2182721 |
| _version_ | 1797837824348651520 |
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| author | M. De Luca N. Ruberti G. Oggiano Ph. Rossi V. Pascucci L. Casini |
| author_facet | M. De Luca N. Ruberti G. Oggiano Ph. Rossi V. Pascucci L. Casini |
| author_sort | M. De Luca |
| collection | DOAJ |
| description | ABSTRACTThis paper presents the structural map of the Barrabisa Complex, an E-W ribbon-like migmatitic massif exposed in the northern part of Sardinia. The migmatites consist of metatexites and diatexites with variable melt proportion, grading in the central part of the complex to a foliated peraluminous granodiorite. Xenotime/monazite dating indicates that the foliated granodiorite pluton emplaced in upper Carboniferous times (≈307–313 Ma) within a narrow E-W ductile top-to-the east shear zone cutting through a Variscan high-grade metamorphic basement composed of orthogneisses, metasedimentary-derived migmatites and subordinate amphibolites. Field geological mapping, coupled with structural and micro-structural analysis, allowed us to distinguish the granodioritic pluton and three metamorphic units characterized by variable melt to protholith ratio, that represent a continuous transition from metatexite to diatexite with high melt concentration, to foliated granodiorite. |
| first_indexed | 2024-04-09T15:30:53Z |
| format | Article |
| id | doaj.art-232ab1f135e3436b881cbadcd9aff0ec |
| institution | Directory Open Access Journal |
| issn | 1744-5647 |
| language | English |
| last_indexed | 2024-04-09T15:30:53Z |
| publishDate | 2023-03-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Maps |
| spelling | doaj.art-232ab1f135e3436b881cbadcd9aff0ec2023-04-28T07:39:37ZengTaylor & Francis GroupJournal of Maps1744-56472023-03-0111010.1080/17445647.2023.2182721Structure of a Variscan migmatite-granite transition zone (N Sardinia, Italy)M. De Luca0N. Ruberti1G. Oggiano2Ph. Rossi3V. Pascucci4L. Casini5Department of Architecture, Design and Urban Planning, University of Sassari, Alghero, ItalyDepartment of Architecture, Design and Urban Planning, University of Sassari, Alghero, ItalyDepartment of Chemistry, Physics, Mathematics and Natural Sciences, University of Sassari, Sassari, ItalyBRGM, Orleans, FranceDepartment of Architecture, Design and Urban Planning, University of Sassari, Alghero, ItalyDepartment of Chemistry, Physics, Mathematics and Natural Sciences, University of Sassari, Sassari, ItalyABSTRACTThis paper presents the structural map of the Barrabisa Complex, an E-W ribbon-like migmatitic massif exposed in the northern part of Sardinia. The migmatites consist of metatexites and diatexites with variable melt proportion, grading in the central part of the complex to a foliated peraluminous granodiorite. Xenotime/monazite dating indicates that the foliated granodiorite pluton emplaced in upper Carboniferous times (≈307–313 Ma) within a narrow E-W ductile top-to-the east shear zone cutting through a Variscan high-grade metamorphic basement composed of orthogneisses, metasedimentary-derived migmatites and subordinate amphibolites. Field geological mapping, coupled with structural and micro-structural analysis, allowed us to distinguish the granodioritic pluton and three metamorphic units characterized by variable melt to protholith ratio, that represent a continuous transition from metatexite to diatexite with high melt concentration, to foliated granodiorite.https://www.tandfonline.com/doi/10.1080/17445647.2023.2182721Corsica-Sardinia Batholithmagmatic flow trajectoriesdiatexite-metatexite transitionxenotime-monazite dating |
| spellingShingle | M. De Luca N. Ruberti G. Oggiano Ph. Rossi V. Pascucci L. Casini Structure of a Variscan migmatite-granite transition zone (N Sardinia, Italy) Journal of Maps Corsica-Sardinia Batholith magmatic flow trajectories diatexite-metatexite transition xenotime-monazite dating |
| title | Structure of a Variscan migmatite-granite transition zone (N Sardinia, Italy) |
| title_full | Structure of a Variscan migmatite-granite transition zone (N Sardinia, Italy) |
| title_fullStr | Structure of a Variscan migmatite-granite transition zone (N Sardinia, Italy) |
| title_full_unstemmed | Structure of a Variscan migmatite-granite transition zone (N Sardinia, Italy) |
| title_short | Structure of a Variscan migmatite-granite transition zone (N Sardinia, Italy) |
| title_sort | structure of a variscan migmatite granite transition zone n sardinia italy |
| topic | Corsica-Sardinia Batholith magmatic flow trajectories diatexite-metatexite transition xenotime-monazite dating |
| url | https://www.tandfonline.com/doi/10.1080/17445647.2023.2182721 |
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