The monazite record of metamorphic evolution during the orogenic development of northern Patagonia.
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| Title: | The monazite record of metamorphic evolution during the orogenic development of northern Patagonia. |
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| Authors: | Oriolo, Sebastián1 (AUTHOR) soriolo@gl.fcen.uba.ar, González, Pablo D.2 (AUTHOR), Marcos, Paulo3 (AUTHOR), Renda, Emiliano M.3 (AUTHOR), Yoya, María Belén1 (AUTHOR), Ballivián Justiniano, Carlos A.1 (AUTHOR), Suárez, Rodrigo3 (AUTHOR), Schulz, Bernhard4 (AUTHOR) |
| Source: | International Journal of Earth Sciences. Jun2026, Vol. 115 Issue 3, p1-16. 16p. |
| Subject Terms: | *Monazite, *Metamorphism (Geology), *Plate tectonics, *Orogeny |
| Geographic Terms: | Patagonia (Argentina & Chile) |
| Abstract: | The tectonometamorphic evolution of Paleozoic basement inliers of Patagonia remains largely elusive and has been poorly constrained even though it represents a key piece to reconstruct the timescales and tectonic processes during early construction of the continental crust. In this work, new monazite electron probe microanalysis (EPMA) Th–U–Pb data are integrated with a review of structural, microstructural, and thermo-barometric information of medium- to high-grade metasedimentary rocks of northern Patagonia, providing constraints on the timescales of Paleozoic orogenic processes. Early to middle Devonian regional metamorphism records high-temperature/low-pressure conditions linked with a retreating accretionary orogen with widespread forearc to retroarc magmatism. After closure of associated extensional basins during a late Devonian compressional stage, changing geodynamic conditions are documented. During the middle to late Carboniferous, progressive crustal thickening linked with the transpressional Gondwanide Orogen gave rise to medium- to high-pressure/high-temperature Barrovian metamorphism. Crustal thickening, possibly linked with flat-slab subduction, favored an inland migration of metamorphism and deformation. Therefore, the arc domain records Permian Buchan-type metamorphism during post-orogenic collapse, whereas coeval Barrovian-type metamorphism associated with crustal shortening occurs in the retroarc domain. This ubiquitous crustal thickening resulting from the Gondwanide Orogeny ultimately contributed to the stabilization of the relatively thin continental crust of northern Patagonia, which resulted from mainly retreating, early to middle Paleozoic subduction. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: enr DbLabel: Energy & Power Source An: 193087012 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: The monazite record of metamorphic evolution during the orogenic development of northern Patagonia. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Oriolo%2C+Sebastián%22">Oriolo, Sebastián</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> soriolo@gl.fcen.uba.ar</i><br /><searchLink fieldCode="AR" term="%22González%2C+Pablo+D%2E%22">González, Pablo D.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Marcos%2C+Paulo%22">Marcos, Paulo</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Renda%2C+Emiliano+M%2E%22">Renda, Emiliano M.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yoya%2C+María+Belén%22">Yoya, María Belén</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ballivián+Justiniano%2C+Carlos+A%2E%22">Ballivián Justiniano, Carlos A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Suárez%2C+Rodrigo%22">Suárez, Rodrigo</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Schulz%2C+Bernhard%22">Schulz, Bernhard</searchLink><relatesTo>4</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Earth+Sciences%22">International Journal of Earth Sciences</searchLink>. Jun2026, Vol. 115 Issue 3, p1-16. 16p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Monazite%22">Monazite</searchLink><br />*<searchLink fieldCode="DE" term="%22Metamorphism+%28Geology%29%22">Metamorphism (Geology)</searchLink><br />*<searchLink fieldCode="DE" term="%22Plate+tectonics%22">Plate tectonics</searchLink><br />*<searchLink fieldCode="DE" term="%22Orogeny%22">Orogeny</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Patagonia+%28Argentina+%26+Chile%29%22">Patagonia (Argentina & Chile)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The tectonometamorphic evolution of Paleozoic basement inliers of Patagonia remains largely elusive and has been poorly constrained even though it represents a key piece to reconstruct the timescales and tectonic processes during early construction of the continental crust. In this work, new monazite electron probe microanalysis (EPMA) Th–U–Pb data are integrated with a review of structural, microstructural, and thermo-barometric information of medium- to high-grade metasedimentary rocks of northern Patagonia, providing constraints on the timescales of Paleozoic orogenic processes. Early to middle Devonian regional metamorphism records high-temperature/low-pressure conditions linked with a retreating accretionary orogen with widespread forearc to retroarc magmatism. After closure of associated extensional basins during a late Devonian compressional stage, changing geodynamic conditions are documented. During the middle to late Carboniferous, progressive crustal thickening linked with the transpressional Gondwanide Orogen gave rise to medium- to high-pressure/high-temperature Barrovian metamorphism. Crustal thickening, possibly linked with flat-slab subduction, favored an inland migration of metamorphism and deformation. Therefore, the arc domain records Permian Buchan-type metamorphism during post-orogenic collapse, whereas coeval Barrovian-type metamorphism associated with crustal shortening occurs in the retroarc domain. This ubiquitous crustal thickening resulting from the Gondwanide Orogeny ultimately contributed to the stabilization of the relatively thin continental crust of northern Patagonia, which resulted from mainly retreating, early to middle Paleozoic subduction. [ABSTRACT FROM AUTHOR] |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s00531-026-02581-y Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 16 StartPage: 1 Subjects: – SubjectFull: Monazite Type: general – SubjectFull: Metamorphism (Geology) Type: general – SubjectFull: Plate tectonics Type: general – SubjectFull: Orogeny Type: general – SubjectFull: Patagonia (Argentina & Chile) Type: general Titles: – TitleFull: The monazite record of metamorphic evolution during the orogenic development of northern Patagonia. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Oriolo, Sebastián – PersonEntity: Name: NameFull: González, Pablo D. – PersonEntity: Name: NameFull: Marcos, Paulo – PersonEntity: Name: NameFull: Renda, Emiliano M. – PersonEntity: Name: NameFull: Yoya, María Belén – PersonEntity: Name: NameFull: Ballivián Justiniano, Carlos A. – PersonEntity: Name: NameFull: Suárez, Rodrigo – PersonEntity: Name: NameFull: Schulz, Bernhard IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 06 Text: Jun2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 14373254 Numbering: – Type: volume Value: 115 – Type: issue Value: 3 Titles: – TitleFull: International Journal of Earth Sciences Type: main |
| ResultId | 1 |
