Geology and crystallization conditions of the Särkiniemi intrusion and related nickel-copper ore, central Finland – implications for depth of emplacement of 1.88 Ga nickel-bearing intrusions [PDF]
Bulletin of the Geological Society of Finland, 2020 Several Ni-Cu deposits occur within the Kotalahti area, central Finland, in proximity to an Archaean gneiss dome surrounded by a Palaeoproterozoic craton-margin supracrustal sequence comprising quartzites, limestones, calc-silicate rocks, black schists ...
Hannu V. Makkonen, Pekka Tuisku
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Mineral chemistry and thermobarometry of Dorbeh diorite metamorphic aureole, south of Urmia [PDF]
پترولوژی, 2023 Hercynite-rich spinel is a typical mineral of both quartz-bearing and quartz-free metapelitic rocks that form under low-pressure high-temperature conditions in the granulite facies (Sengupta et al., 1991) or upper-amphibolite facies of regional and ...
Monir Modjarrad, Hadi Omrani
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Pressure, temperature and time constraints on tectonic models for southwestern Sweden [PDF]
, 2010 In this work, a number of key localities have been investigated in detail in order to provide precise constraints on models for the tectonic evolution of southern Sweden.
Austin Hegardt, Eric
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Deeply subducted continental fragments - Part 2: Insight from petrochronology in the central Sesia Zone (western Italian Alps) [PDF]
, 2018 Subducted continental terranes commonly comprise an assembly of subunits that reflect the different tectono-metamorphic histories they experienced in the subduction zone.
Burn, Marco +4 more
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Magma Plumbing During the 2014–2015 Eruption of Fogo (Cape Verde Islands)
Frontiers in Earth Science, 2020 Phenocrysts in volcanic rocks are recorders of magmatic processes that have occurred at depth before and during a volcanic eruption. Our petrological investigations of stratigraphically controlled tephrite and phonotephrite samples from the latest ...
Andreas Klügel +3 more
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Mineral chemistry, thermobarometry and tectonomagmatic setting of Late-Cretaceous volcanic rocks from the Kojid area (south of Lahijan, northern Alborz) [PDF]
پترولوژی, 2018 The volcanic rocks of Kojid area (south of Lahijan) crop out in northern Alborz. They show mainly pillow structure with numerous cross-cutting dykes. Based on lithostratigraphic relationships and interpillow pelagic limestones, the volcanics are Late ...
morteza delavari +2 more
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High- and Ultrahigh-Pressure Metamorphism in the North Qaidam and South Altyn Terranes, Western China [PDF]
, 2007 The North Qaidam and South Altyn terranes extend approximately 1000 km across the northern Tibetan Plateau, and five localities preserve evidence of Early Paleozoic high-pressure (HP) or ultrahigh-pressure (UHP) metamorphism, including the presence of ...
Bird, D. K. +3 more
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Table Cape vent xenolith suite, northwest Tasmania: Mineralogy and implications for crust-mantle lithology and Miocene geotherms in Tasmania. [PDF]
, 2005 The Miocene Table Cape vent erupted a diverse mantle-crust xenolith suite within its fractionated nephelinitic matrix. Assemblages include mantle metaperidotites, garnet-metawebsterites and rarer garnet-metadinopyroxenitcs, garnct-mctawehrlites ...
Pogson, RE, Raynor, LR, Sutherland, FL
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Petrology and mineral chemistry of the Hamaneh granitoid, West of Yazd (Central Iran zone) [PDF]
پترولوژیIntroductionMineral chemistry has a significant role in determining the stages of magma evolution. Amphiboles, Biotite, plagioclase, and chlorite are minerals whose chemical composition show the temperature and pressure conditions of magma.
Javad Ghanei Ardakani, Maryam Ahankoub
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Metamorphic P–T paths of Archean granulite facies metasedimentary lithologies from the eastern Beartooth Mountains of the northern Wyoming Province, Montana, USA: constraints from quartz-in-garnet (QuiG) Raman elastic barometry, geothermobarometry, and thermodynamic modeling [PDF]
European Journal of Mineralogy, 2023 Metamorphic pressure and temperature (P–T) paths in late-Archean high-grade rocks of the eastern Beartooth Mountains of Montana (USA), a portion of the Wyoming Province, are established by a combination of imaging, analytical, and modeling approaches ...
L. Tuttle, D. J. Henry
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