Results 61 to 70 of about 278,731 (238)
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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Composition of sources in the Kinkil complex of Western Kamchatka based on the isotopic-geochemical data [PDF]
Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле, 2019 The authors studied the isotope-geochemical composition of the Eocene volcanic rocks from the Kinkilsk complex of Western Kamchatka. The peculiarities of the distribution of high field strength and heavy rare-earth elements and their ratio, as well as ...
Fedorov, P.I. +3 more
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Geological Journal, EarlyView.Petrography, thermobarometry, and pseudosection modelling reveal peak metamorphic conditions of 3–7.5 kbar and 520°C–800°C in Tonian‐Cryogenian orthogneisses of the Dom Feliciano Belt. Metamorphic field gradients of 27°C/km–39°C/km and variable exhumation mechanisms support correlation of these units as remnants of a Himalayan‐type Piratini Orogeny ...
Thaiane Niederauer‐Santos +6 more
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Solid Earth SciencesThis research investigates the origin and relationship between adakites and non-adakitic magmas found at Los Espinos Volcano (LEV), situated within the Michoacán-Guanajuato Volcanic Field (MGVF) in Mexico.
Boris Chako-Tchamabé +5 more
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Petrology and geochemistry of igneous rocks and their relationship with mineralization in Talahoueieh area, north of Bam, Urumieh-Dokhtar Magmatic Arc [PDF]
پترولوژیIntroduction The Central Iran zone represents one of the most significant geological domains of Iran, characterized by a wide diversity of igneous, metamorphic, and sedimentary rocks formed through prolonged tectonic and magmatic processes.
Jalal Hassanshahi +2 more
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Limnology and Oceanography: Methods, EarlyView.Abstract Accurate measurements of phytoplankton net primary production (NPP) and calcification are essential for quantifying marine carbon cycling, yet in situ calcification rates remain poorly constrained. We compared 13C‐ and 14C‐based tracer methods for NPP in laboratory cultures of the diatom Chaetoceros tenuissimus and the coccolithophore ...
Chloe L. Smith +4 more
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Mass Spectrometry Reviews, EarlyView.ABSTRACT The use of MALDI mass spectrometry for the analysis of carbohydrates and glycoconjugates is a well‐established technique and this comprehensive review is the twelfth update of the original article published in 1999 and brings coverage of the literature to the end of 2024.
David J. Harvey
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Experimental constraints on amphibole stability in primitive alkaline and calc-alkaline magmas [PDF]
, 2017 Equilibrium crystallization experiments were carried out on two primitive basaltic rocks (APR16: Na2O+K2O=4.40 wt%; CM42: Na2O+K2O=2.59 wt%) with the aim to investigate the amphibole stability in the differentiation processes at deep crustal level, of
Gaeta, M. +9 more
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Exploring biofiber properties and their influence on biocomposite tensile properties
Polymer International, EarlyView.The study measured the physical, flow and chemical properties of 10 biofibers. It characterized the tensile properties of derived biocomposites and linked them using regression models, showing robust predictive performance. Abstract Biofibers serve as effective reinforcements for neat polylactic acid (PLA) in biocomposites, offering an attractive ...
Oluwafemi A. Oyedeji +5 more
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Geologica Acta, 2009 Magmatic structures related to the mechanical interaction between mafic magmas and granitoids have been studied in the Valle Fértil calc-alkaline igneous complex, Argentina.
A. CASTRO +7 more
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