Results 11 to 20 of about 59,128 (262)
Geochemistry, Geophysics, GeosystemsCompositions of plagioclase‐melt pairs are commonly used to constrain temperatures (T), dissolved water contents (H2O) and pressures (P) of pre‐eruptive magma storage and transport.
K. S. Cutler, M. Cassidy, J. D. Blundy
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Elasticity of plagioclase feldspars [PDF]
Journal of Geophysical Research: Solid Earth, 2016 AbstractElastic properties are reported for eight plagioclase feldspars that span compositions from albite (NaSi3AlO8) to anorthite (CaSi2Al2O8). Surface acoustic wave velocities measured using Impulsive Stimulated Light Scattering and compliance sums from high‐pressure X‐ray compression studies accurately determine all 21 components of the elasticity ...
J Michael Brown
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Thermobar: An open-source Python3 tool for thermobarometry and hygrometry
Volcanica, 2022 We present Thermobar, a new open-source Python3 package for calculating pressures, temperatures, and melt compositions from mineral and mineral-melt equilibrium.
Penny Wieser +6 more
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Micro-Textural Controls on Magma Rheology and Vulcanian Explosion Cyclicity
Frontiers in Earth Science, 2021 Understanding the relationship between degassing, crystallization processes and eruption style is a central goal in volcanology, in particular how these processes modulate the magnitude and timing of cyclical Vulcanian explosions in intermediate magmas ...
Amelia A. Bain +9 more
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Frontiers in Nuclear Engineering, 2023 The literature for radionuclide sorption on four common granitic minerals have been surveyed. Mainly, such studies were modelling using Thermodynamic Sorption Models were investigated. Although the studies give a far from concerted results, they agree on
Stellan Holgersson, Pawan Kumar
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CRYSTALLIZATION CONDITIONS OF PLAGIOCLASE IN VOLCANIC COMPLEXES OF SULAWESI ISLAND, PACIFIC OCEAN [PDF]
Минералогия, 2023 Mineralogical and thermobarogeochemical studies allowed us to reveal the crystallization conditions of plagioclase in volcanic complexes of Sulawesi Island (Pacific Ocean).
A.V. Kotlyarov +5 more
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The Polumir granite: Addititional data on its origin [PDF]
Geološki Anali Balkanskoga Poluostrva, 2002 The Polumir granite is exposed on several localities due to erosion, and its chemical and mineral composition is presented in this paper. It is built of K-feldspar, plagioclase, myrmekite, metasomatic albite, biotite, muscovite and quartz, while apatite,
Vukov Milenko S., Milovanović Dragan
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Miarolitic cavities in rapakivi granite on Hästholmen, Loviisa, southeastern Finland [PDF]
Bulletin of the Geological Society of Finland, 1987 Miarolitic cavities are described from drill cores taken from rapakivi granite on Hästholmen, an island about 80 km east of Helsinki. The distribution of cavities between different textural types of rapakivi seems to favour the equigranular medium to ...
K. Lindqvist, V. Suominen
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Hydrogen incorporation in plagioclase [PDF]
Geochimica et Cosmochimica Acta, 2020 We conducted experiments at high pressure (P) and temperature (T) to measure hydrogen solubility in plagioclase (Pl) with a range of compositions (An15 to An94). Experiments were run at 700-850 °C, 0.5 GPa, and f O 2 close to either the Ni-NiO (NNO) or iron-wüstite (IW) oxygen buffers.
Jed L. Mosenfelder +4 more
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Frontiers in Earth Science, 2023 The origin of the EM2 (enriched mantle 2)-type reservoir beneath the Southeast Asia is controversial. In this study, we present new in-situ major and trace element (olivine, clinopyroxene, and plagioclase), and Sr isotopic compositions (plagioclase) for ...
Shuang-Shuang Chen +12 more
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