Laser heating effect on Raman analysis of CO2 co-existing as liquid and vapor in olivine-hosted melt inclusion bubbles
Raman spectroscopy has become the tool of choice for analyzing fluid inclusions and melt inclusion (MI) vapor bubbles as it allows the density of CO2-rich fluids to be quantified. Measurements are often made at ambient temperature (Tamb ~18-25 °C), resulting in reported bulk densities between 0.2 an...
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| Format: | Article |
| Language: | English |
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Volcanica
2023-07-01
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| Series: | Volcanica |
| Subjects: | |
| Online Access: | https://www.jvolcanica.org/ojs/index.php/volcanica/article/view/165 |
| _version_ | 1797777041495425024 |
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| author | Charlotte L. DeVitre Kyle Dayton Esteban Gazel Ayla Pamukçu Glenn Gaetani Penny E. Wieser |
| author_facet | Charlotte L. DeVitre Kyle Dayton Esteban Gazel Ayla Pamukçu Glenn Gaetani Penny E. Wieser |
| author_sort | Charlotte L. DeVitre |
| collection | DOAJ |
| description | Raman spectroscopy has become the tool of choice for analyzing fluid inclusions and melt inclusion (MI) vapor bubbles as it allows the density of CO2-rich fluids to be quantified. Measurements are often made at ambient temperature (Tamb ~18-25 °C), resulting in reported bulk densities between 0.2 and 0.7 g/mL despite that single-phase CO2 under these conditions is thermodynamically unstable and instead consists of a liquid (~0.7 g/mL), and a vapor phase (~0.2 g/mL). Here, we present results from experiments conducted at Tamb and 37 °C (above the CO2 critical temperature) on 14 natural CO2-rich MI bubbles from Mount Morning, Antarctica. Here, we show that at Tamb, laser power strongly affects the CO2 Raman spectrum of MI bubbles with bulk densities within the miscibility gap. High-power laser heating and low spectral resolution explain why published measurements have reported such bulk densities at Tamb even when using an instrument-specific calibration. |
| first_indexed | 2024-03-12T22:59:25Z |
| format | Article |
| id | doaj.art-0fe9bf19c39d42c48ddf885d81f9ecfc |
| institution | Directory Open Access Journal |
| issn | 2610-3540 |
| language | English |
| last_indexed | 2024-03-12T22:59:25Z |
| publishDate | 2023-07-01 |
| publisher | Volcanica |
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| series | Volcanica |
| spelling | doaj.art-0fe9bf19c39d42c48ddf885d81f9ecfc2023-07-19T13:42:01ZengVolcanicaVolcanica2610-35402023-07-016220121910.30909/vol.06.02.201219150Laser heating effect on Raman analysis of CO2 co-existing as liquid and vapor in olivine-hosted melt inclusion bubblesCharlotte L. DeVitre0https://orcid.org/0000-0002-7167-7997Kyle Dayton1https://orcid.org/0000-0001-8055-5652Esteban Gazel2https://orcid.org/0000-0002-6385-7672Ayla Pamukçu3https://orcid.org/0000-0002-5717-834XGlenn Gaetani4Penny E. Wieser5https://orcid.org/0000-0002-1070-8323Cornell University, Ithaca, NY 14850, USACornell University, Ithaca, NY 14850, USACornell University, Ithaca, NY 14850, USAStanford University, Stanford, CA 94305, USAWoods Hole Oceanographic Institution, Falmouth, MA 02543, USAEarth and Planetary Science, UC Berkeley, CA, USARaman spectroscopy has become the tool of choice for analyzing fluid inclusions and melt inclusion (MI) vapor bubbles as it allows the density of CO2-rich fluids to be quantified. Measurements are often made at ambient temperature (Tamb ~18-25 °C), resulting in reported bulk densities between 0.2 and 0.7 g/mL despite that single-phase CO2 under these conditions is thermodynamically unstable and instead consists of a liquid (~0.7 g/mL), and a vapor phase (~0.2 g/mL). Here, we present results from experiments conducted at Tamb and 37 °C (above the CO2 critical temperature) on 14 natural CO2-rich MI bubbles from Mount Morning, Antarctica. Here, we show that at Tamb, laser power strongly affects the CO2 Raman spectrum of MI bubbles with bulk densities within the miscibility gap. High-power laser heating and low spectral resolution explain why published measurements have reported such bulk densities at Tamb even when using an instrument-specific calibration.https://www.jvolcanica.org/ojs/index.php/volcanica/article/view/165raman spectroscopycarbon dioxidefluid inclusionsmelt inclusionslaser heating |
| spellingShingle | Charlotte L. DeVitre Kyle Dayton Esteban Gazel Ayla Pamukçu Glenn Gaetani Penny E. Wieser Laser heating effect on Raman analysis of CO2 co-existing as liquid and vapor in olivine-hosted melt inclusion bubbles Volcanica raman spectroscopy carbon dioxide fluid inclusions melt inclusions laser heating |
| title | Laser heating effect on Raman analysis of CO2 co-existing as liquid and vapor in olivine-hosted melt inclusion bubbles |
| title_full | Laser heating effect on Raman analysis of CO2 co-existing as liquid and vapor in olivine-hosted melt inclusion bubbles |
| title_fullStr | Laser heating effect on Raman analysis of CO2 co-existing as liquid and vapor in olivine-hosted melt inclusion bubbles |
| title_full_unstemmed | Laser heating effect on Raman analysis of CO2 co-existing as liquid and vapor in olivine-hosted melt inclusion bubbles |
| title_short | Laser heating effect on Raman analysis of CO2 co-existing as liquid and vapor in olivine-hosted melt inclusion bubbles |
| title_sort | laser heating effect on raman analysis of co2 co existing as liquid and vapor in olivine hosted melt inclusion bubbles |
| topic | raman spectroscopy carbon dioxide fluid inclusions melt inclusions laser heating |
| url | https://www.jvolcanica.org/ojs/index.php/volcanica/article/view/165 |
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