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dc.contributor.author
Gonzalez Guillot, Mauricio Alberto
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dc.contributor.other
Ghiglione, Matias
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dc.date.available
2022-01-05T12:00:04Z
dc.date.issued
2015
dc.identifier.citation
Gonzalez Guillot, Mauricio Alberto; Magmatic Evolution of the Southernmost Andes and its Relation with Subduction Processes; Springer; 2015; 37-74
dc.identifier.isbn
978-3-319-39725-2
dc.identifier.uri
http://hdl.handle.net/11336/149608
dc.description.abstract
The magmatic arc in the SouthernmostAndes is represented by the Fuegian Batholith and satellite plutons, plus minorvolcanic and volca-niclastic sequences. Magmatism was active from the LateJurassic to the Miocene in response to subduction of the Pacific plates beneathSouth America. The batholith was constructed episodically and includes acalc-alkaline trench-side arc and shoshonitic rear-arc suites. The oldestcomponents are minor S-like granitoids; recent volcanism is very scarce. Thevolcanic front shifted, and the composition of magmas changed several times dueto a variable subduction configuration. Major tectonic events included theopening and closure of the Rocas Verdes marginal basin in theJurassic-Cretaceous, and oroclinal bending in the latest Cretaceous-Paleogene.A well established slab shallowing event initiated in the mid-Cretaceous,causing a cratonward migration of the volcanic front, the widening of the arc,and inception of potassic magmatism in the rear-arc. This was associated withmarginal basin inversion, regional peak metamorphism and orogenic deformation.Different timing and position of rear-arc suites with respect to the volcanicfront in the Fuegian and Southern Patagonian Andes may have been influenced bydifferential development of the marginal basin, which was wider to the south.The absence of magmatism in the Miocene may have responded to highly obliqueconvergence plus buoyant subduction.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Fuegian Batholith
dc.subject
Ptagonian Batholith
dc.subject
Trench-side arc
dc.subject
Rear arc
dc.subject
Subduction parameters
dc.subject
Fuegian Andes
dc.subject
Rocas Verdes basin
dc.subject.classification
Geología
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Magmatic Evolution of the Southernmost Andes and its Relation with Subduction Processes
dc.type
info:eu-repo/semantics/publishedVersion
dc.type
info:eu-repo/semantics/bookPart
dc.type
info:ar-repo/semantics/parte de libro
dc.date.updated
2021-12-03T18:03:46Z
dc.journal.pagination
37-74
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: Gonzalez Guillot, Mauricio Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1007/978-3-319-39727-6
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/chapter/10.1007/978-3-319-39727-6_3
dc.conicet.paginas
206
dc.source.titulo
Geodynamic Evolution of the Southernmost Andes: Connections with the Scotia Arc
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