Geochronology of Mexican mineral deposits. IV: the Cinco Minas epithermal deposit, Jalisco
Two 40 Ar/ 39 Ar ages at 24.50 ± 0.07 and 23.46 ± 0.26 Ma (latest Oligocene) were obtained in this paper for adularia separates from vein material of the Cinco Minas low sulfidation epithermal deposit in Jalisco, southwestern Mexico. Such ages confirm the migration of metallogenic activity along wit...
| Autores: | , , , |
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| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 2016 |
| País: | México |
| Recursos: | Universidad Nacional Autónoma de México |
| Repositório: | Redalyc-UNAM |
| OAI Identifier: | oai:redalyc.org:94346152012 |
| Acesso em linha: | https://www.redalyc.org/articulo.oa?id=94346152012 https://www.redalyc.org/journal/943/94346152012/ https://www.redalyc.org/journal/943/94346152012/html/ https://www.redalyc.org/journal/943/94346152012/94346152012.epub https://www.redalyc.org/journal/943/94346152012/movil |
| Access Level: | Acceso aberto |
| Palavra-chave: | Ciencias de la Tierra 40 Ar Mexico adularia 39 Ar ages Cinco Minas |
| Resumo: | Two 40 Ar/ 39 Ar ages at 24.50 ± 0.07 and 23.46 ± 0.26 Ma (latest Oligocene) were obtained in this paper for adularia separates from vein material of the Cinco Minas low sulfidation epithermal deposit in Jalisco, southwestern Mexico. Such ages confirm the migration of metallogenic activity along with volcanism as the Sierra Madre Occidental migrated southwards since the latest Oligocene and into the Miocene. These deposits are synchronous to andesitic volcanism nearby. In addition, these ages indicate the occurrence of epithermal mineralization prior to the climactic event of ignimbrite flare-up in the Miocene. This makes necessary to refine previous ideas in the metallogeny of southwestern Mexico, which suggested a scenario in which the formation of epithermal and other types of hydrothermal deposits in the region were produced almost exclusively as a result of the early Miocene peak episode of volcanism. |
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