Results 11 to 20 of about 113 (110)
Original Calibration of a Garnet Geobarometer in Metapelite [PDF]
Minerals, 2019 In many metapelitic assemblages, plagioclase is either CaO-deficient or even absent. In such cases, all the widely applied, well-calibrated plagioclase-related geobarometers lose their usage. Fortunately, it has been found that a net-transfer reaction including intracrystalline Fe2+–Ca2+ exchange in garnet is pressure-sensitive, therefore, a garnet ...
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Mössbauer spectroscopy of sulphidic minerals [PDF]
Acta Montanistica Slovaca, 2000 Principles of the Mössbauer effect and the possibilities of its utilization for the study of sulphidic minerals are discussed. There is possibility to apply the Mössbauer spectroscopy in mineralogy for the identification of sulphides (fingerprint ...
Lipka Jozef, Balá Peter
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Experimental calibration of hornblende as a proposed emprical geobarometer [PDF]
Eos, Transactions American Geophysical Union, 1988 The recent Eos report by Anderson [1987] reviewed prospects for using dated granitoid plutons as crustal nails in the reconstruction of descent or ascent of deformed crust during orogenic processes, if suitable geobarometers could be established.
Rutter, Michael J., Wyllie, Peter J.
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THERMOBAROMETRY OF DEPLETED PERIDOTITES
Геодинамика и тектонофизикаAn assessment was made of the possibility of using olivine thermobarometry for xenoliths of depleted peridotites from the Udachnaya pipe (Yakutia), represented by 76 megacrystalline dunites and 5 megacrystalline harzburgites.
L. N. Pokhilenko +2 more
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Journal of Economic Geology, 2017 Introduction Mineral composition is sensitive to variations in the composition of the magma and can be used to characterize the physical conditions of crystallization such as temperature, pressure, oxygen fugacity and water content.
Fatemeh Sarjoughian
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Terrestrial, Atmospheric and Oceanic Sciences, 2009 Cretaceous Late Yanshanian (LY) magmatism produced large amounts of I-type granitoids in the Southeast Coast Mag matic Belt (SCMB). I-type granitoids from Xiaojiang-Liangnong complexes (N Zhejiang) in the northern part of this belt are characterized by ...
Pei-Shan Hsieh +3 more
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Геодинамика и тектонофизикаThe article presents the results of 40Ar/39Ar dating of rocks (quartz and alkali syenites, nepheline syenites with REE-Nb-Zr mineralization) from the Burpala massif using feldspar, phlogopite, and amphibole.
A. V. Ponomarchuk +4 more
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New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.We provide petrographic and geochemical characterisation of mantle xenoliths from Koro Island, eastern Fiji. Several lherzolite xenoliths display spinel–pyroxene symplectite textures, including preserved former grain boundaries, consistent with garnet breakdown that we attribute to thinning of a preexisting garnet‐facies lithospheric mantle beneath ...
Natasha Barrett +4 more
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On the sphalerite geobarometer.
GEOCHEMICAL JOURNAL, 1988 Even though the sphalerite geobarometer enjoys wide support as a very reliable parameter which gives pressure values consistent with the pressures obtained by different silicates equilibrium, thermodynamically the internal consistency of its experimental data may be questioned. The pressure read from the geobarometer should be regarded tentatively.
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Geochemistry, Geophysics, Geosystems, Volume 27, Issue 2, February 2026.Abstract The water content of granulite xenoliths from the Cenozoic Weichang basalts in the northern North China Craton (NCC) is investigated to constrain the nature and evolution of the lower crust. Granulites are categorized into felsic and mafic groups, characterized by widely developed glass‐bearing sieve textures in their constituent minerals ...
Yuanyuan Liu +5 more
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