Results 41 to 50 of about 7,825 (224)

Petrology and Geochemistry of Granitoid from South Sulawesi, Indonesia: Implication for Rare Earth Element (REE) Occurrences [PDF]

, 2016
This study reports petrology and geochemistry of potential rare earth elements (REE) bearing granitoid from South Sulawesi. The granitoid consists of monzogranite, granodiorite and diorite with subordinate of quartz monzonite, monzodiorite and syenite ...
Yonezu, K., Maulana, A., Watanabe, K.
core   +3 more sources

Heterogeneous Exhumation Mechanisms in Neoproterozoic Collisional Metamorphism: P–T Constraints From Pelotas and Punta del Este Terranes, Southern Brazil and Uruguay

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, Carla Cristine Porcher, Daniel Triboli Vieira, Edinei Koester, Diego Jaldín, Karina Luengo, Luisa Caon   +6 more
wiley   +1 more source

Karakteristik Geokimia Batuan Granitoid di Daerah Singkawang dan Sekitarnya, Provinsi Kalimantan Barat [PDF]

, 2023
Ada dua jalur granit orogenik kapur di Kalimantan yaitu, jalur granit kordilera yang tersusun atas tonalit, granodiorit, sedikit granit yang berumur Kapur Awal – Kapur Akhir dan jalur granit kaledonia yang tersusun atas granit dan granodiorit yang ...
REVALINA, Olga
core  

Application of Biotite Chemistry for Discrimination of Origion, Emplacement and Mineralization Potential of Sarbijan–Dalfard Granitoids, NW Jiroft, Kerman, SE Iran [PDF]

پترولوژی
IntroductionUrumieh–Dokhtar Magmatic Arc (UDMA) as a part of Zagros orogeny is the most important Cenozoic magmatic belt in Iran (Alavi, 1994; Babazadeh et al., 2024).
Raziyeh Rezaei Adriani, Habibollah Ghasemi, Masoud Alipour Asl, Mohsen Mobasheri, Silvia Fornasaro   +4 more
doaj   +1 more source

Type intrusive series of the Far East belt of lithium-fluoric granites and its ore content

Записки Горного института, 2022
The evolution and ore content of granitoid magmatism in the Far East belt of lithium-fluoric granites lying in the Russian sector of the Pacific ore belt have been studied.
Viktor I. Alekseev
doaj   +1 more source

Neural Networks and Multivariate Analysis Based on Geochemical Data to Determine Stone Provenance From Ancient Calabrian Quarries (Southern Italy)

Archaeometry, EarlyView.
ABSTRACT This study shows an innovative approach to determine the origin of some Calabrian rocks quarried used in ancient times. Twenty‐five quarries, distributed in all the Calabrian provinces (Southern Italy), were studied and sampled. Ten samples were taken from each quarry, for a total of 250 samples.
Domenico Miriello, Stefano Columbu, Raffaella De Luca, Marco Lezzerini, Mirco Taranto, Fabrizio Antonelli   +5 more
wiley   +1 more source

Petrology and Geochemistry of the Aroud Granitoid Pluton, North of Alam Kuh, Central Western Alborz [PDF]

پترولوژی
IntroductionThe central Alborz, a tectono-stratigraphic terrane within the Alborz Mountains, underwent significant tectonic evolution linked to the Late Triassic Cimmerian orogeny and the subsequent collision between the Iranian microplate and the ...
Shadi Noori KHeymehsari, Nematollah Rashidnejad Omran, Mohammadreza Ghorbani, Huai-jen yang   +3 more
doaj   +1 more source

Appraisal of Six Natural Mica Reference Materials for In Situ Rb‐Sr Geochronology

Geostandards and Geoanalytical Research, EarlyView.
Key Points Evaluated six natural mica reference materials for in situ LA‐ICP‐MS/MS Rb‐Sr geochronology using geochemical, microstructural and isotopic characterisation. Identified robust primary reference materials: Mount Dromedary biotite (99.37 Ma) and Mica‐Fe biotite (307.75 Ma). La Posta biotite and Högsbo muscovite are suitable secondary reference
Hugo K.H. Olierook, Bruno V. Ribeiro, Janne Liebmann, Kai Rankenburg, Fred Jourdan, Ahmad Redaa, Jarred C. Lloyd, Thomas M. Belgrano, Carlos R. Corella Santa Cruz, Yujin Jegal, Julien Mercadier, Catherine Zimmermann, Jie Yu, Andreas Zametzer, Christopher L. Kirkland, Sarah E. Gilbert, Craig D. Storey, Luc S. Doucet, Isabelle Jones, Louisa Stokes, Thomas Zack, Delia Rösel, Denis Fougerouse, Jonas Kaempf, Priyanjan Datta, Hijas Hameed, Noreen J. Evans, Malcolm P. Roberts, Juraj Farkas, Stijn Glorie, Celia Mayers, R. Adam Frew, Sarah Al Odeh, Chloe E. Roche, Massimo Chiaradia, Alicia M. Cruz‐Uribe, Alan S. Collins, Andreas Karlsson, Anusha Shantha Kumara   +38 more
wiley   +1 more source

GEOLOGY AND GEOCHEMISTRY OF SYNPLUTONIC DYKES IN THE CHELYABINSK GRANITOID MASSIF, SOUTH URALS

Геодинамика и тектонофизика, 2017
We present the results of geological, petro‐geochemical and mineralogical studies of synplutonic intrusive formations in the Chelyabinsk granitoid massif, South Urals.
G. A. Kallistov, T. A. Osipova
doaj   +1 more source

Metamorphic or Igneous Zircon? Classification Through Rare Earth Elements, Machine Learning and Logistic Regression

Journal of Metamorphic Geology, EarlyView.
ABSTRACT Zircon is a common, highly refractory accessory mineral found in sedimentary, igneous and metamorphic rocks that forms through various processes (e.g., magmatic, hydrothermal, metamorphic growth and recrystallization). Trace element compositions of detrital zircon have been widely applied to understanding tectonic processes and continental ...
Jarrod M. Burges, Chris Yakymchuk, Michael P. DiMaio, Timothy C. C. Lui, Anirudh Prabhu, Shaunna M. Morrison   +5 more
wiley   +1 more source