The effect of iron and alkali on the nanocrystal-free viscosity of volcanic melts: A combined Raman spectroscopy and DSC study
The iron coordination, its oxidation state (Fe 2+/Fe tot.), and alkali ratio [Na/(Na+ K)] greatly
influence the structure and thus the viscosity of volcanic melts, which is known to play a key …
influence the structure and thus the viscosity of volcanic melts, which is known to play a key …
Crystallization kinetics of alkali feldspar in peralkaline rhyolitic melts: implications for Pantelleria volcano
Peralkaline rhyolites, associated with extensional tectonic settings, are medium to low
viscosity magmas that often produce eruptive styles ranging from effusive to highly explosive …
viscosity magmas that often produce eruptive styles ranging from effusive to highly explosive …
[PDF][PDF] Water solubility in trachytic and pantelleritic melts: an experimental study
Résumé Solubility experiments were performed on a trachyte and a pantellerite from
Pantelleria. The trachyte has SiO 2= 65. 2 wt%, Al 2 O 3= 15. 2 wt% and a peralkaline index …
Pantelleria. The trachyte has SiO 2= 65. 2 wt%, Al 2 O 3= 15. 2 wt% and a peralkaline index …
Extreme differentiation along multiple liquid lines of descent in strongly peralkaline magma series at Pantelleria (Italy)
JC White, R Macdonald, B Bagiński… - Journal of …, 2023 - academic.oup.com
The liquid line of descent from trachyte to pantellerite is controlled primarily by fractional
crystallization of alkali feldspar, with whole-rock compositions following a fractionation path …
crystallization of alkali feldspar, with whole-rock compositions following a fractionation path …
An empirical H2O solubility model for peralkaline rhyolitic melts
The H2O solubility in peralkaline haplogranitic melts has been experimentally determined
as a function of pressure (27–200 MPa) and temperature (1123–1523 K). The compositions …
as a function of pressure (27–200 MPa) and temperature (1123–1523 K). The compositions …
Crystal structure of nyerereite: A possible messenger from the deep Earth
Carbonates in the system Na2CO3-CaCO3 are nowadays suggested as having a wide
stability field at conditions of the mantle transition zone. Our structural analysis of nyerereite …
stability field at conditions of the mantle transition zone. Our structural analysis of nyerereite …
[PDF][PDF] Crystallization of peralkaline rhyolitic magmas: pre-and syn-eruptive conditions of the Pantelleria system
Résumé Pantelleritic magmas are low-viscosity peralkaline rhyolites which exhibit large
differences in eruptive style (explosive to effusive). The processes that promote …
differences in eruptive style (explosive to effusive). The processes that promote …
New IR spectroscopic data for determination of water abundances in hydrous pantelleritic glasses
To aid current work on the genesis of pantelleritic magmas, and the desire to use IR
spectroscopy to measure water contents in natural (eg, melt inclusions) and experimental …
spectroscopy to measure water contents in natural (eg, melt inclusions) and experimental …
An empirical H2O solubility model for peralkaline rhyolitic melts
A Anja, PL Petri, E Dennis… - … to Mineralogy and …, 2022 - search.proquest.com
The H 2 O solubility in peralkaline haplogranitic melts has been experimentally determined
as a function of pressure (27–200 MPa) and temperature (1123–1523 K). The compositions …
as a function of pressure (27–200 MPa) and temperature (1123–1523 K). The compositions …
Catastrophic volcanic eruptions: Causes and mechanisms
EV Sharkov - Journal of Volcanology and Seismology, 2020 - Springer
One of the main natural disasters is explosive volcanic eruptions, often lasting 2–4 months. It
is obvious that such eruptions of volcanoes cause simultaneous mass release of gas …
is obvious that such eruptions of volcanoes cause simultaneous mass release of gas …