Estelle F. Rose Koga

Deeper, faster, stronger? Extreme magma ascent rates and explosive eruption metrics at Stromboli volcano (Italy)

Guillaume Georgeais, Yves Moussallam, Estelle F. Rose Koga, Kenneth T. Koga et autres

us, fr, it (code pays fourni par la source)

Experimental determination of equilibrium sulfur isotope fractionation factors in the gas-silicate melt-sulfide liquid system

Shashank Prabha Mohan, Kenneth T. Koga, Diego Narváez, Estelle F. Rose Koga et autres

Sulfur, despite its minor presence (∼ 250 µg.g −1 ) in the bulk silicate Earth, can exhibit high solubility in melts, up to 1.5 wt. %, depending on the melt’s oxidation state. Sulfur is also integral to the formation of economically significant …

fr, ec (code pays fourni par la source)

Halogens in proto-Iceland plume basalts

Emma L. Tomlinson, Estelle F. Rose Koga, Anne‐Sophie Bouvier, Dónal James O'farrell et autres

Melt inclusions in olivine phenocrysts from high 3He/4He proto-Iceland plume (PIP) basalts from Baffin Island and West Greenland have elevated Br/Cl ratios, extending to values significantly above those found in mid-ocean ridge basalt (MORB) and ocean island basalt (OIB). Chlorine isotope compositions …

ie, fr, Algérie, ch, au, us, gb (code pays fourni par la source)

Enigmatic carbon isotopic variability in the oceanic upper mantle

Yves Moussallam, Estelle F. Rose Koga, Cyril Aubaud, Guillaume Georgeais et autres

Unraveling the origin(s) of carbon on Earth has remained challenging, not only because of the multiple isotopic fractionation episodes that may have occurred during planet formation processes but also because the end point of these processes, the current isotopic value of Earth’s …

us, fr (code pays fourni par la source)

Magmatic volatiles control the sub-plinian basaltic eruptions at Ambae volcano, Vanuatu

Philipson Bani, Alessandro Aiuppa, Diego Coppola, Simon Carn et autres

The 2017–2018 eruption of Ambae volcano provided a rare opportunity to investigate gas emissions during a sub-Plinian basaltic eruption. Here we document the gas emissions during this eruption using satellite observation, alongside gas measurements and geochemical analyses. Our results indicate that the …

fr, nc, it, us, vu (code pays fourni par la source)

The carbon isotopic signature of the upper mantle is heterogeneous

Yves Moussallam, Kenneth T. Koga, Estelle F. Rose Koga, Cyril Aubaud et autres

Knowledge of the carbon isotopic (δ13C) signature of the mantle source region of mid–ocean ridge basalts, is key to understanding carbon cycling on a planetary scale. This value has long been held at –4‰ from the study of popping rocks or –5‰ …

us, fr (code pays fourni par la source)

New insights on the Si cycle and Si isotopes behaviour in the mantle from i n-situ measurements of δ 30 Si in olivine-hosted melt inclusions

Anne‐Sophie Bouvier, Estelle F. Rose Koga, Martin Guitreau, Clémence Le Lay et autres

The infidelity of H 2 O/Ce in alkalic melts—a result of low-degree melting and CO 2 -rich primary melts

Olivia S. Anderson, Matthew G. Jackson, James Dottin, Sunna Harðardóttir et autres

Development of Basaltic Glass Reference Materials for Volatile Element Analysis (H₂O, CO₂, S, Cl, F) and Investigation of Water-Induced C Ionization Suppression in Silicate Glasses Using SIMS

Yves Moussallam, Hélène Bureau, Terry Plank, H. Khodja et autres

Advances in the Measurement of δ 13 C in Silicate Glass by Secondary Ion Mass Spectrometry (SIMS)

Hyunjoo Lee, Yves Moussallam, Estelle F. Rose Koga, Laurette Piani et autres

Volatiles in olivine-hosted melt inclusions from a rejuvenated Oʻahu tephra: Degree of melting controls the primary melt CO2 content—And extent of H2O degassing—Of OIB

Olivia E. Anderson, Matthew G. Jackson, James Dottin, Sunna Harðardóttir et autres

us, fr (code pays fourni par la source)

Relationship of magmatic fluids to high-enthalpy geothermal systems: New insights from the Tolhuaca Geothermal System (TGS), Southern Andes

Philippe Robidoux, Daniele Tardani, Pablo Sánchez-Alfaro, Marco Liuzzo et autres

cl, it, us, fr (code pays fourni par la source)