Adakite-like signature in volcanic rocks associated with the Oro del sur Au - (Cu) epithermal deposit, Southern Precordillera, Argentina
The Oro del Sur deposit is located in the southern part of the Precordillera of Mendoza Province, Argentina (32°30'S, 69°05'W) within the flat-slab subduction segment. It is a Cu-(Mo) porphyry type system with associated high sulfidation Au-(Cu) epithermal veins genetically linked to Mioce...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2011 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/69030 |
| Acceso en línea: | http://hdl.handle.net/11336/69030 |
| Access Level: | acceso abierto |
| Palabra clave: | Adakite-Like Signature Argentina Epithermal High Sulfidation Miocene Magmatism Oro del Sur Deposit Precordillera https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
| Sumario: | The Oro del Sur deposit is located in the southern part of the Precordillera of Mendoza Province, Argentina (32°30'S, 69°05'W) within the flat-slab subduction segment. It is a Cu-(Mo) porphyry type system with associated high sulfidation Au-(Cu) epithermal veins genetically linked to Miocene volcanic rocks which show geochemical characteristics (particularly low Y and low Yb values and high Sr/Y and La/Yb ratios) that indicate an adakite-like signature, and a Sr-Nd isotopic composition that suggests involvement of a depleted mantle source in their genesis. The age of this adakitic magmatism (∼19 Ma) suggests a change in the geochemical signature of the magmatism linked to the onset of flattening of the subduction zone. The adakite-like signature of the Miocene volcanism of the Oro del Sur ore deposit supports a genetic relationship between adakitic magmatism, mineralization and slab shallowing in this part of the Andes. |
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