Lowell R. Moore's research while affiliated with Virginia Tech (Virginia Polytechnic Institute and State University) and other places

... For example, melt inclusion work involves numerous time and resource consuming sample preparation, analytical and data processing steps (Fig. 1). Despite meticulous efforts, calculated pressures often come with significant analytical and systematic uncertainties (e.g., melt and bubble volume measurements, solubility models, post-entrapment crystallisation corrections) that can range from 20 % to 50 % when fully propagated (Tucker et al., 2019;Wieser et al., 2021;DeVitre et al., 2023). CO 2 -dominated fluid inclusions, tiny droplets of exsolved fluids enclosed in growing crystals within a degassing melt (Roedder, 1979), offer a compelling alternative to melt inclusions for deducing magma storage depths. ...

... However, as hydrothermal metasomatism is often reported to occur in Limineralized pegmatites (Kaeter et al., 2018), it is unclear if the estimated Li concentration in the pegmatitic rock based on the bulk and mineral composition is representative of the Li abundance in the system over the pegmatite crystallization process. Moreover, the coarse and variable grain size makes the obtained bulk composition of pegmatite uncertain (Yuan et al., 2021). The formation of rare-element pegmatite is generally considered to have experienced the magmatic-hydrothermal transition stage, which has been recorded by the melt and fluid inclusions trapped in pegmatite minerals (Rickers et al., 2006;Thomas & Davidson, 2016;Hulsbosch et al., 2019). ...

... In the Raman method Moore et al., 2015;Moore and Bodnar, 2019;Rasmussen et al., 2020), the bubble CO 2 mass is derived as the product of bubble CO 2 density × bubble volume. Raman indicates a pure-CO 2 gas phase composition for the shrinkage bubble (Fig. 2 a); we hence apply the densimeter by Wang et al. (2011) for the calculation of the bubble CO 2 density. ...

... The agreement between these two independent methodologies provides confidence in our restored total MI CO 2 values. The total MI CO 2 contents determined with the observed-volume method also positively correlate with those inferred from Raman analysis (Fig. 8d), but typically plot above the 1:1 line, indicating that the observed-volume approach may systematically overestimate the MI CO 2 budget, as already suggested (Moore et al., 2018;Rasmussen et al., 2020). Rasmussen et al. (2020) also found that the concentrations reconstructed from both Raman measurements and the simulated-volume method are quantitatively consistent with those obtained by re-homogenising MI at high temperature and pressurethis latter procedure being considered as that yielding the most accurate CO 2 reconstructions. ...

... In recent years, studies of the water content in LIP magmas have gradually increased [11][12][13][14][15][16][17][18][19][20][21][22][23] . Based on the small-scale mafic-ultramafic rocks (e.g., picrites, meimechites, komatiites and mafic intrusive rocks), they have constrained the water content in the LIPs, including the Emeishan LIP (2.71-3.73 ...

... For this study, we consider that FI with >80% exsolved fluid offer a suitable record of pressure. This is consistent with previous work indicating that exchange of CO2 with the melt is negligible in inclusions that trap predominantly the vapor phase (little melt) (Steele-MacInnis et al., 2017). ...

... This latter process is especially relevant for volatile species, as it leads to partitioning of poorly soluble CO 2 from the melt inclusion glass into the shrinkage bubble. Shrinkage bubbles can contain up to > 90 % of the bulk MI CO 2 content (e.g., Mironov and Portnyagin, 2011;Hartley et al., 2014;Mironov et al., 2015;Moore et al., 2015;Esposito et al., 2016;Aster et al., 2016;Rasmussen et al., 2018Rasmussen et al., , 2020, demonstrating the caveats of traditional approaches (Lowenstern, 2015) that focus on measuring volatiles in glass only. Still, accurately quantifying the shrinkage bubble CO 2 content is technically challenging (e.g., Naumov et al., 2003), and few examples are available of reconstructions of the total (bubble + glass) MI CO 2 budget in OIB (e. g., Taracsák et al., 2019;Tucker et al., 2019, Burton et al., 2023. ...

... In each simulation we generated a H 2 O solubility curve which was used as the degassing boundary condition during decompression. These were calculated using a Python version of VolatileCalc (Newman & Lowenstern, 2002;Rasmussen et al., 2020) using the major element content of Seguam tephra glass, the initial water content generated from the prior and a CO 2 content of 900 ppm (Moore et al., 2015). We used the basalt version of VolatileCalc (Newman & Lowenstern, 2002) and set the SiO 2 content of the Seguam melt to the maximum accepted value of 49 wt%, given that the Seguam tephra glass slightly exceeds this value (50.55 wt%). ...