CHARACTERIZATION OF THE ASHES FROM THE 2014-2015 TURRIALBA VOLCANO ERUPTIONS BY MEANS OF SCANNING ELECTRON MICROSCOPY AND ENERGY DISPERSIVE X-RAY SPECTROSCOPY
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Universidad de Costa Rica
2016
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| _version_ | 1876467597086556160 |
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| author | Oscar H. Lücke |
| author_facet | Oscar H. Lücke |
| contents | CHARACTERIZATION OF THE ASHES FROM THE 2014-2015 TURRIALBA VOLCANO ERUPTIONS BY MEANS OF SCANNING ELECTRON MICROSCOPY AND ENERGY DISPERSIVE X-RAY SPECTROSCOPY Oscar H. Lücke Ariadna Calderón Geología Volcanic Ash Ray Spectroscopy Phreatic Eruption Turrialba Volcano Phreatomagmatic Eruption The Turrialba Volcano is a stratovolcano located approximately 35 km northwest from San José, Costa Rica’s capital city. Since October 29, 2014, until at least late 2015, a series of eruptions has represented the most significant activity of this volcano since the 1860s. These eruptions dispersed a significant volume of ash that reached the most populous areas of the country. In this article, the characteristics of the ash particles are analyzed in order to establish the nature of the eruptive events that occurred on 2014 and 2015, and to monitor the evolution of the eruptive processes. The analysis was carried out utilizing optical microscopy and stereomicroscopy techniques, as well as novel scanning electron microscopy (SEM) methods that involve imaging and element composition analysis by means of Energy Dispersive X-Ray Spectroscopy (EDX). Results show the evolution of the Turrialba eruptions from phreatic events in 2014, with ashes composed entirely of non-juvenile fragments, to phreatomagmatic events starting on March 12, 2015 with the appearance of a significant fraction of juvenile components in the ash. 2016 artículo científico 0256-7024 https://www.redalyc.org/articulo.oa?id=45445616005 en http://www.redalyc.org/revista.oa?id=454 Revista Geológica de América Central application/pdf Universidad de Costa Rica Revista Geológica de América Central (Costa Rica) Num.54 |
| format | Artículo científico |
| id | redalyc_45445616005 |
| institution | Redalyc |
| language | en |
| publishDate | 2016 |
| publisher | Universidad de Costa Rica |
| spellingShingle | CHARACTERIZATION OF THE ASHES FROM THE 2014-2015 TURRIALBA VOLCANO ERUPTIONS BY MEANS OF SCANNING ELECTRON MICROSCOPY AND ENERGY DISPERSIVE X-RAY SPECTROSCOPY Oscar H. Lücke Geología Volcanic Ash Ray Spectroscopy Phreatic Eruption Turrialba Volcano Phreatomagmatic Eruption CHARACTERIZATION OF THE ASHES FROM THE 2014-2015 TURRIALBA VOLCANO ERUPTIONS BY MEANS OF SCANNING ELECTRON MICROSCOPY AND ENERGY DISPERSIVE X-RAY SPECTROSCOPY Oscar H. Lücke Ariadna Calderón Geología Volcanic Ash Ray Spectroscopy Phreatic Eruption Turrialba Volcano Phreatomagmatic Eruption The Turrialba Volcano is a stratovolcano located approximately 35 km northwest from San José, Costa Rica’s capital city. Since October 29, 2014, until at least late 2015, a series of eruptions has represented the most significant activity of this volcano since the 1860s. These eruptions dispersed a significant volume of ash that reached the most populous areas of the country. In this article, the characteristics of the ash particles are analyzed in order to establish the nature of the eruptive events that occurred on 2014 and 2015, and to monitor the evolution of the eruptive processes. The analysis was carried out utilizing optical microscopy and stereomicroscopy techniques, as well as novel scanning electron microscopy (SEM) methods that involve imaging and element composition analysis by means of Energy Dispersive X-Ray Spectroscopy (EDX). Results show the evolution of the Turrialba eruptions from phreatic events in 2014, with ashes composed entirely of non-juvenile fragments, to phreatomagmatic events starting on March 12, 2015 with the appearance of a significant fraction of juvenile components in the ash. 2016 artículo científico 0256-7024 https://www.redalyc.org/articulo.oa?id=45445616005 en http://www.redalyc.org/revista.oa?id=454 Revista Geológica de América Central application/pdf Universidad de Costa Rica Revista Geológica de América Central (Costa Rica) Num.54 |
| title | CHARACTERIZATION OF THE ASHES FROM THE 2014-2015 TURRIALBA VOLCANO ERUPTIONS BY MEANS OF SCANNING ELECTRON MICROSCOPY AND ENERGY DISPERSIVE X-RAY SPECTROSCOPY |
| topic | Geología Volcanic Ash Ray Spectroscopy Phreatic Eruption Turrialba Volcano Phreatomagmatic Eruption |
| url | https://www.redalyc.org/articulo.oa?id=45445616005 |