PETROLOGY AND GEOCHEMISTRY OF THE VOLCANIC ROCKS OF CERRO LA TETA AND JURAREIN CREEK, HIGH GUAJIRA - COLOMBIA
This work aims to provide new analytical data, complementing the existing information about the Jurassic volcanic rocks of Cerro La Teta and Jurarein creek in the high area of la Guajira. A Geochemical characterization for three field samples collected in the area was made; major, minor and trace el...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2013 |
| País: | Colombia |
| Institución: | Universidad Industrial de Santander |
| Repositorio: | Repositorio UIS |
| Idioma: | español |
| OAI Identifier: | oai:noesis.uis.edu.co:20.500.14071/5115 |
| Acceso en línea: | https://revistas.uis.edu.co/index.php/revistaboletindegeologia/article/view/3735 https://noesis.uis.edu.co/handle/20.500.14071/5115 |
| Access Level: | acceso abierto |
| Palabra clave: | Rhyolite Cerro La Teta Petrography Geochemistry Calc-alkaline Guajira Riolitas Petrografía Geomquímica Calco-alcalino |
| Sumario: | This work aims to provide new analytical data, complementing the existing information about the Jurassic volcanic rocks of Cerro La Teta and Jurarein creek in the high area of la Guajira. A Geochemical characterization for three field samples collected in the area was made; major, minor and trace elements were analyzed, indicating a sub alkaline affinity from calc-alkaline series using characterization diagrams for volcanic rocks. The chondritic normalized diagrams show abundance of light rare earth elements (LREE) (La/Yb)N of 6,38 – 37,17 and of (La/Ce)N of 1,31 - 1,35 instead of heavy rare earth elements (HREE) (Gd/Yb)N of 1,15 – 1,35. Geotectonic diagrams suggest that these rocks were formed in a collisional environment, with a calc-alkaline affinity. Analyzing these data we can suggest that during the generation of the volcanic rhyodacite of the Cerro La Teta, the Colombian Guajira Peninsula was in a more southwestern position than the proposed by Kennan and Pindell (2009), closer to Farallon Plate subduction zone. |
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