3D reconstruction of melt inclusion and bubble volumes: implication for CO2 estimates in Fagradalsfjall melt inclusions, Iceland ...
Carbon dioxide (CO2) is an important volatile component in magmas. Volatiles are usually lost upon eruption as their solubility decreases during magma ascent. Magmatic crystals often trap small drops of magma as melt inclusions (MI), that can preserve the original volatile content of the melt. In MI...
| Format: | Dataset |
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| Language: | English |
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Elettra Sincrotrone Trieste
2024
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| Online Access: | https://dx.doi.org/10.34965/i11283 https://vuo.elettra.eu/pls/vuo/open_access_data_portal.show_view_investigation?FRM_ID=11283 |
| Summary: | Carbon dioxide (CO2) is an important volatile component in magmas. Volatiles are usually lost upon eruption as their solubility decreases during magma ascent. Magmatic crystals often trap small drops of magma as melt inclusions (MI), that can preserve the original volatile content of the melt. In MIs, CO2 can be sequestered into bubbles, along with being dissolved into the melt. The reconstruction of the total CO2 contents in MIs therefore relies on the estimate of MI and bubble volumes, which we want to achieve by using X-ray microtomography. We target MIs from the 2021, 2022 and 2023 Fagradalsfjall eruptions in Iceland, with the main goals of (1) quantifying CO2 concentration in MIs with a synchrotron-based approach and compare those estimates with calculations obtained with other methods (2) unravel the heterogeneity and degassing history of Fagradalsfjall’s magma. ... |
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