Results 21 to 30 of about 4,348 (222)
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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Geothermobarometry of Sarmeshk granitoids in the Northwest of Sarduiyeh [PDF]
پترولوژی, 2018 The Sarmeshk granitoid pluton is located in southeast of the Urumieh-Dokhtar magmatic zone in the Kerman province. Based on petrographic studies, the granitoid consist of three rock type of diorite, granodiorite and monzogranite. They are mainly composed
Asma Nazarinia +3 more
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Frontiers in Earth Science, 2021 The chemical and isotopic compositions of volcanic arc lavas often show evidence for involvement of a sedimentary component during magma genesis. Determining where this sedimentary component is added to arc magmas is of vital importance for constraining ...
J. R. Brown +5 more
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Plagioclase as evidence of magmatic evolution in the Zafarqand porphyry copper deposit, NE Isfahan
Journal of Economic Geology, 2018 Introduction Chemical and textural zoning patterns preserved in plagioclase phenocrysts can provide useful information on parameters that constrains the changing melt compositions in the magma systems.
Maryam Aminoroayaei Yamini +3 more
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Lithium in felsic magmas: a volcanological perspective
Frontiers in Earth Science, 2023 Volcanic eruptions are unpredictable phenomena that pose a challenge to crisis management, owing to the fact that contrasted eruptive styles (explosive versus effusive) exhibited at the surface depend on unobservable deep processes occurring in the ...
Maylis Dupont de Dinechin +4 more
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Two generations of scapolite at Snezhnoe ruby deposit, Central Pamir
Известия высших учебных заведений: Геология и разведка, 2017 At Snezhnoe ruby deposit, localized in the eastern part of the tectonic zone of Central Pamir, two generations of sсapolite have been discovered by the textural and structural features.
A. K. Litvinenko +2 more
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Бюллетень Почвенного института им. В.В. Докучаева, 2019 During the model experiment the changes in the mineralogical composition of the open surface of arable soil (leached chernozem, gray forest soil, sod-podzolic soil) under the impact of raindrops under fallow conditions were studied.
E. Yu. Prudnikova +3 more
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Frontiers in Earth Science, 2020 A multi-disciplinary study, integrating volcanological field observations, petrography, whole rock geochemistry and textural and compositional analyses on plagioclase crystals has been carried out on the products of Monte Luccia, Spiaggia Lunga, and ...
Eugenio Nicotra +3 more
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Surface hydration‐induced damage in tight oil‐bearing sandy conglomerate reservoirs
Deep Underground Science and Engineering, EarlyView.A series of techniques such as X‐ray diffraction, scanning electron microscopy, energy‐dispersive spectroscopy, conductivity tests, and infrared thermal imaging were used. The key findings are the identification of a two‐stage surface hydration process and the elucidation of the effects of various minerals and elements on the hydration process ...
Anbang Zhao +5 more
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Frontiers in Earth Science, 2021 Study of melt inclusions (MIs) is a commonly applied method for defining the composition of magmas present at depth prior to mixing, fractionation, and degassing. Our ability to use data from MIs is complicated by post-entrapment processes (PEP) that can
Kristen R. Lewis +4 more
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