Geoquímica del rubidio-estroncio y edad de las esmeraldas colombianas
The rubidium-strontium method has been worked to determine the age of some colombian emeralds. These emeralds have low radiogenic strontium enrichments because of their younger age and their low rubidium content; they also have relatively high primary strontium content. Although the age of the emera...
| Autores: | , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2000 |
| País: | Colombia |
| Institución: | Universidad Nacional de Colombia |
| Repositorio: | Repositorio UN |
| Idioma: | español |
| OAI Identifier: | oai:repositorio.unal.edu.co:unal/42082 |
| Acceso en línea: | https://repositorio.unal.edu.co/handle/unal/42082 http://bdigital.unal.edu.co/32179/ |
| Access Level: | acceso abierto |
| Palabra clave: | Geología Ciencias de la tierra Geociencias Colombia-Esmeraldas Geoquímica-Esmeraldas Geoquímica del Rubidio- Estroncio Colombia-Emeralds Gechemistry-Emeralds Rubidium-Strontium geochemistry |
| Sumario: | The rubidium-strontium method has been worked to determine the age of some colombian emeralds. These emeralds have low radiogenic strontium enrichments because of their younger age and their low rubidium content; they also have relatively high primary strontium content. Although the age of the emeralds of geologically younger formations is more difficult to establish, isotope values of these emeralds plotted on a graph of 87Sr/86Sr vs 87Rb/86Sr is indicative of about 61 to 67 million years as the age of mineralization. |
|---|