Results 151 to 160 of about 798 (184)

An analysis of uncertainty in non‐equilibrium and equilibrium geothermobarometry

Journal of Metamorphic Geology, 2004
AbstractIn statistically optimised P–T estimation, the contributions to overall uncertainty from different sources are represented by ellipses. One source, for a diffusion‐controlled reaction at non‐equilibrium, is diffusion modelling of the reaction texture.
J. R. ASHWORTH, V. S. SHEPLEV, V. V. KHLESTOV, V. A. ANANYEV   +3 more
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SCG: A Computer Applicationfor Single Clinopyroxene Geothermobarometry

Italian Journal of Geosciences, 2014
SCG stands for Single Clinopyroxene Geothermobarometry, a software application for clinopyroxene geothermobarometry introduced here for the first time to the scientific community along with an explanatory note. SCG is a highly specialised and user-friendly application.
Sayari, Mohammad, Sharifi, Mortaza
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Geothermobarometry of the Central Crystallines from the Garhwal Himalaya

Journal Geological Society of India, 1988
Abstract Pelitic schists, gneisses and amphibolites from the Central Crystallines of the Garhwal Himalaya display evidence of multiple deformation (D1, D2 and D3) and polymetamorphism (M1, M2 and M3)' During the M1 episode of regional metamorphism which represents a thermal peak, the pelitic schists and gneisses developed the assemblage:
V. K. Gairola, D. Ackermand
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Geothermobarometry of high-grade metapelites: simultaneously operating reactions

Geological Society, London, Special Publications, 1989
Summary Experimental data on equilibria involving rock-forming minerals in high-grade metapelites (garnet, orthopyroxene, cordierite and plagioclase) have been used to derive an internally consistent system of mineralogical thermometers and barometers based on component reactions and excess mixing properties of solid solutions ...
L. Ya. Aranovich, K. K. Podlesskii
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Fast resetting of zircon in garnet inclusion pressures: implications for elastic geothermobarometry.

2022
<p>The contrast in the thermoelastic properties between one inclusion and its surrounding host is commonly exploited to back-calculate the pressure (P) and temperature (T) conditions of inclusion entrapment. This is elastic thermobarometry and it is based on the elastic properties of minerals rather than chemical equilibrium.
Nicola Campomenosi, Boriana Mihailova, Ross John Angel, Marco Scambelluri, Matteo Alvaro   +4 more
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Metapelitic Garnet-Muscovite-Al2SiO5-Quartz (GMAQ) Geothermobarometry

Journal of Earth Science, 2018
The garnet-muscovite geothermometer and garnet-muscovite-Al2SiO5-quartz (GMAQ) geobarometer have been empirically calibrated under P-T conditions of 1–12 kbar and 460–760 oC using natural metapelitic rocks. The chemical compositions of the calibrant muscovite are in the ranges of Fe=0.03–0.21 atoms, Mg=0.02–0.32 atoms and AlVI=1.62–1.96 atoms ...
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Mineral chemistry and geothermobarometry of Moshirabad pluton, Qorveh, Kurdistan, western Iran

Island Arc, 2012
AbstractThe Moshirabad pluton is located southwest of the Sanandaj–Sirjan Metamorphic Belt, Qorveh, western Iran. The pluton is composed of diorite, monzodiorite, quartz diorite, quartz monzodiorite, tonalite, granodiorite, granite, aplite, and pegmatite.
ALI A. SEPAHI, MOHAMMAD MAANIJOU, SEDDIGHEH SALAMI, SARA GARDIDEH, TAYEBEH KHAKSAR   +4 more
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Geothermobarometry of Al2SiO5-bearing metapelites in the western Austroalpine �tztal-basement

Mineralogy and Petrology, 1996
The dominant amphibolite-facies Variscan event in the Austroalpine Otztal basement can best be studied in the northwestern part of the Otztal block. Further to the southeast it is overprinted by Alpine metamorphism. Metapelites with the assemblage garnet-staurolite-kyanite-sillimanite±andalusite-biotite-muscovite-plagioclase were used to reconstruct ...
P. Tropper, G. Hoinkes
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Geothermobarometry in metasediments of the southern Grossvenediger area (Tauern Window, Austria)

Journal of Metamorphic Geology, 1990
Metasediments in the southern Grossvenediger area (Tauern Window, Austria) were studied along a cross‐section through rocks of increasing metamorphic grade from the margin of the Tauern Window in the south to the base of the Upper Schieferhülle, including the Eclogite Zone, in the north.In the southern part of the cross‐section there is no evidence for
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Novel use of borosilicates in geothermobarometry

Mitteilungen der Österreichischen Mineralogischen Gesellschaft
Terrestrial planets (like Venus, Earth, Mars) are planets, which are composed preliminary of silicates or metals. All terrestrial planets may have the same basic type of structure; such as a metallic core (mostly iron), with a surrounding silicate mantle. More than 90 % of the Earth’s crust is composed of silicates.
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