The orbicular granodiorite of Recoba Hill in the North Patagonian Batholith
La granodiorita orbicular del cerro Recoba, Batolito Patagónico Norte, Chaitén
dc.contributor | en-US | |
dc.contributor | es-ES | |
dc.creator | Soto, Aníbal | |
dc.creator | Hervé, Francisco | |
dc.creator | Calderón, Mauricio | |
dc.creator | Gregorina, Gianfranco | |
dc.date | 2025-01-31 | |
dc.date.accessioned | 2025-05-07T15:00:43Z | |
dc.date.available | 2025-05-07T15:00:43Z | |
dc.identifier | http://www.andeangeology.cl/index.php/revista1/article/view/V52n1-3701 | |
dc.identifier | 10.5027/andgeoV52n1-3701 | |
dc.identifier.uri | https://revistaschilenas.uchile.cl/handle/2250/252185 | |
dc.description | A 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. | en-US |
dc.description | Un pequeño cuerpo de granodiorita orbicular aflora en el cerro Recoba, inmediatamente al este del pueblo de Chaitén, en Chiloé continental, sur de Chile. La roca está compuesta de núcleos ígneos centimétricos cubiertos por un único anillo periférico conformado por agregados de grano fino de cuarzo, plagioclasa y feldespato potásico. Está emplazada en una granodiorita miocena y se presenta cortada por diques aplíticos y máficos. A la fecha, no se han reportado otros afloramientos de rocas orbiculares a lo largo de los más de 1.000 km que constituyen el Batolito Patagónico, lo cual sugiere que las condiciones necesarias para su formación fueron infrecuentes. Determinaciones termobarométricas indican presiones inferiores a 2 kbar (menos de 6 km de profundidad) para su formación, un nivel más somero que el de la mayoría de los estimados para las rocas más antiguas del batolito. | es-ES |
dc.format | application/pdf | |
dc.format | text/html | |
dc.language | eng | |
dc.publisher | Servicio Nacional de Geología y Minería | en-US |
dc.relation | http://www.andeangeology.cl/index.php/revista1/article/view/V52n1-3701/pdf | |
dc.relation | http://www.andeangeology.cl/index.php/revista1/article/view/V52n1-3701/html | |
dc.relation | http://www.andeangeology.cl/index.php/revista1/article/downloadSuppFile/V52n1-3701/4225 | |
dc.relation | http://www.andeangeology.cl/index.php/revista1/article/downloadSuppFile/V52n1-3701/4226 | |
dc.relation | http://www.andeangeology.cl/index.php/revista1/article/downloadSuppFile/V52n1-3701/4227 | |
dc.relation | http://www.andeangeology.cl/index.php/revista1/article/downloadSuppFile/V52n1-3701/4228 | |
dc.relation | http://www.andeangeology.cl/index.php/revista1/article/downloadSuppFile/V52n1-3701/4229 | |
dc.relation | http://www.andeangeology.cl/index.php/revista1/article/downloadSuppFile/V52n1-3701/4230 | |
dc.relation | http://www.andeangeology.cl/index.php/revista1/article/downloadSuppFile/V52n1-3701/4231 | |
dc.relation | http://www.andeangeology.cl/index.php/revista1/article/downloadSuppFile/V52n1-3701/4232 | |
dc.relation | http://www.andeangeology.cl/index.php/revista1/article/downloadSuppFile/V52n1-3701/4233 | |
dc.rights | Copyright (c) 2025 Andean Geology | en-US |
dc.source | Andean Geology; Vol 52, No 1 (2025); 86-100 | es-ES |
dc.source | Andean Geology; Vol 52, No 1 (2025); 86-100 | en-US |
dc.source | 0718-7106 | |
dc.source | 0718-7092 | |
dc.subject | Orbicular rocks; Miocene intrusives; Patagonian Batholith; Hornblende geothermobarometry; Chaitén | en-US |
dc.subject | Rocas orbiculares; Intrusivos miocenos; Batolito Patagónico; Geotermobarometría de hornblenda; Chaitén | es-ES |
dc.title | The orbicular granodiorite of Recoba Hill in the North Patagonian Batholith | en-US |
dc.title | La granodiorita orbicular del cerro Recoba, Batolito Patagónico Norte, Chaitén | es-ES |
dc.type | info:eu-repo/semantics/article | |
dc.type | info:eu-repo/semantics/publishedVersion | |
dc.type | es-ES | |
dc.type | en-US |
This item appears in the following Collection(s)
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Andean Geology
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