Results 1 to 10 of about 822 (117)

Investigation of the formation processes in the mafic enclaves of Naqadeh plutonic rocks assemblage by zircon U-Pb dating, Sr-Nd isotopic ratios, and amphibole composition [PDF]

open access: yesپترولوژی, 2021
Naqadeh intrusive pluton is composed of two distinct sections of felsic (40 Ma age) and mafic (99 Ma age) rocks. The granitoid rocks of Naqadeh pluton have different types of mafic enclaves, including mafic microgranular enclaves (MME) and quartz ...
Seyed Ali Mazhari
doaj   +1 more source

The importance of Confocal Raman Spectroscopy and mineral chemistry studies in the magma crystallization processes: Strandja Intrusives, NW Türkiye

open access: yesBulletin of the Mineral Research and Exploration, 2023
The Strandja Massif cropping out in NW Turkey is cut by Late Cretaceous intrusives. These are called Strandja Intrusives and they are felsic and mafic coeval intrusives.
Yusuf Kağan Kadıoğlu, Ezgi Ulusoy
doaj   +1 more source

Approach to amphibole in Zaydari Nasavi’s Nafthat-o-Almasdour [PDF]

open access: yesمطالعات زبانی و بلاغی, 2013
“Nafthat-o-Almasdour” book is one of the excellent examples of technical and stilted prose in the seventh century. The author of this work with complete mastery and benefit from a variety of literal and spiritual figures of speech has revealed his art in
عطا محمد رادمنش   +1 more
doaj   +1 more source

Compositional Variation of Amphiboles During Magma Mixing: A Case Study of Huangyangshan A-Type Granite in Kalamaili Metallogenic Belt, East Junggar, China

open access: yesFrontiers in Earth Science, 2021
The Huangyangshan A-type granitic pluton, distributed along the thrust fault in the Kalamaili region of East Junggar, Xinjiang, China, consists of alkaline granite containing abundant dioritic enclaves that formed via magma mixing.
Chenyang Ye   +10 more
doaj   +1 more source

Geothermobarometry of Sarmeshk granitoids in the Northwest of Sarduiyeh [PDF]

open access: yesپترولوژی, 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
doaj   +1 more source

Polarons in Rock-Forming Minerals: Physical Implications

open access: yesCondensed Matter, 2022
The existence of thermally-activated quasiparticles in amphiboles is an important issue, as amphiboles are among the main hydrous complex silicate minerals in the Earth’s lithosphere.
Boriana Mihailova   +5 more
doaj   +1 more source

Confronting Solid‐State Shear Bias: Magmatic Fabric Contribution to Crustal Seismic Anisotropy

open access: yesGeophysical Research Letters, 2023
Seismic anisotropy is controlled by aligned rock‐forming minerals, which most studies attribute to solid‐state shear with less consideration for magmatic fabric in plutonic rocks (rigid‐body rotation of crystals in the presence of melt).
Michael G. Frothingham   +4 more
doaj   +1 more source

Amphibole and biotite of melanocratic rocks from the Ural granitic massifs: composition, relationship, petrogenetic consequences

open access: yesЛитосфера, 2020
Research subject. The article discusses the features of the relationship between biotite and amphibole on the example of magmatogene melanocratic rocks from a number of granitoid massifs of the Urals. These rocks form xenoliths and synplutonic intrusions
S. V. Pribavkin
doaj   +1 more source

Magnetic petrology of the Água Azul and Água Limpa granodiorites, southern portion of the Carajás Domain – Pará [PDF]

open access: yesGeologia USP. Série Científica, 2013
The Água Azul and Água Limpa granodiorites (AAGrd and ALGrd, respectively) outcrop in the extreme southern of the Carajás Domain as two elongated bodies following the EW regional trend and were previously included in the Xingu Complex. The ALGrd consists
Eleilson Oliveira Gabriel   +1 more
doaj   +1 more source

APG: An Efficient Software Program for Amp-Pl Thermobarometry Based on Graphical Method [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2011
Geothermobarometry equations are based on thermodynamic principles and appear in single or multi-variant functions. The number of variants for a specific composition or reaction usually is reduced into 2 involving temperature (T) and pressure (P).
M. Sayari
doaj  

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