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The orbicular granodiorite of Recoba Hill in the North Patagonian Batholith

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dc.contributor.authorSoto, Aníbal
dc.contributor.authorHervé, Francisco
dc.contributor.authorCalderón, Mauricio
dc.contributor.authorGregorina, Gianfranco
dc.date.accessioned2026-10-06T12:26:51Z
dc.date.available2026-10-06T12:26:51Z
dc.date.issued2025
dc.description.abstractA small body of orbicular granodiorite crops out on the Recoba Hill, immediately east of the town of Chaitén, in the mainland area called Chiloé continental, in southern Chile. The rock comprises cm-sized igneous cores with a single shell of fine-grained plagioclase-quartz-K-feldspar assemblages. It is hosted in a Miocene granodiorite, and it is crosscut by aplite and mafic dikes. No other mention of orbicular rocks has to date been reported for the >1,000 km long North Patagonian Batholith, suggesting that the conditions necessary for their formation were infrequent. Thermobarometric determinations indicate pressures lower than 2 kbar (less than 6 km depth) for its formation, a level much shallower than the estimated source depth of the older rocks of the batholith.
dc.description.versionVersión publicada
dc.format.extent15 p.
dc.identifier.citationSoto, A., Hervé, F., Calderón, M., & Gregorina, G. (2025). The orbicular granodiorite of recoba hill in the north patagonian batholith. Andean Geology, 52(1), 86. https://doi.org/10.5027/andgeoV52n1-3701
dc.identifier.doihttps://doi.org/10.5027/andgeoV52n1-3701
dc.identifier.urihttps://hdl.handle.net/11447/11227
dc.language.isoen
dc.rightsAtribución-NoComercial-CompartirIgual 3.0 Chile (CC BY-NC-SA 3.0 CL)
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/cl/
dc.subjectOrbicular rocks
dc.subjectMiocene intrusives
dc.subjectPatagonian Batholith
dc.subjectHornblende geothermobarometry
dc.subjectChaitén
dc.titleThe orbicular granodiorite of Recoba Hill in the North Patagonian Batholith
dc.title.alternativeLa granodiorita orbicular del cerro Recoba, Batolito Patagónico Norte, Chaitén
dc.typeArticle
dcterms.accessRightsAcceso abierto
dcterms.sourceAndean Geology
dspace.entity.typePublication

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