scholarly journals 3D geological modelling of the Double Eagle-Black Thor intrusive complexes, McFaulds Lake Greenstone Belt, Ontario, Canada

2018 ◽  
Author(s):  
A B Laudadio ◽  
E Schetselaar ◽  
M G Houlé
Keyword(s):  
Greenstone Belt ◽  
Geological Modelling

Estructura, metamorfismo y petrología del basamento ígneo-metamórfico de la Sierra de San Luis entre Nogolí y Gasparillo

2003 ◽  
Author(s):  
◽  
Pablo Diego González
Keyword(s):  
Greenstone Belt ◽  
San Luis

El análisis de la evolución estructural, metamórfica y magmática del basamento del sector occidental de la Sierra de San Luis entre Nogolí y Gasparillo permitió identificar al ciclo orogénico Famatiniano dividido en dos etapas: 1) una fase orogénica principal, de edad fundamentalmente ordovícica, y 2) una etapa tardía a pos-orogénica, desarrollada entre el Silúrico y el Carbonífero Temprano. Los procesos anteriores a ellos fueron agrupados como pre-Famatinianos. El evento más antiguo reconocido en el Complejo Metamórfico Nogolí es una sedimentación silicoclástica pelítica y psamítica vinculada a flujos de komatiitas, basaltos komatiíticos y basaltos toleíticos de alto Fe, y a intercalaciones de estratos de Fe bandeado (BIF). La asociación litológica komatiita-BIF dentro de una misma secuencia (típica de un greenstone belt) y una edad Sm-Nd roca total de 1500 Ma para la posible cristalización de los flujos máficos-ultramáficos sugieren una edad mesoproterozoica para el protolito del Complejo Metamórfico Nogolí. La posterior estructuración E-O a NO-SE asociada a metamorfismo relíctico de T alta y P media es asignada a la actividad orogénica del ciclo Pampeano. Se describe un conjunto de tres eventos deformativos, con plegamientos, foliaciones e inyecciones graníticas asociadas. Por otro lado se registra la sedimentación de la Formación San Luis y la Unidad La Alumbrera que habría sido anterior o coetánea con el metamorfismo y la deformación pre-Famatinianos del Complejo Metamórfico Nogolí.

FOUNDATIONS OF THE FUTURE: 3D GEOLOGICAL MODELLING FOR SUSTAINABLE CITIES

2020 ◽  
Author(s):  
Tim Kearsey ◽  
◽  
Stephanie Bricker ◽  
Katie Whitbread ◽  
Ricky Terrington ◽  
...  
Keyword(s):  
Sustainable Cities ◽  
Geological Modelling ◽  
The Future

scholarly journals Loop - Enabling 3D stochastic geological modelling

2019 ◽  
Vol 2019 (1) ◽  
pp. 1-3
Author(s):  
Laurent Ailleres ◽  
Mark Jessell ◽  
Eric de Kemp ◽  
Guillaume Caumon ◽  
Florian Wellmann ◽  
...  
Keyword(s):  
Geological Modelling

Evidence for Mesoarchean subduction in southern Bundelkhand Craton, India: Geochemical fingerprints from metavolcanics of Kurrat - Girar - Badwar Greenstone Belt

Geochemistry ◽  
2021 ◽  
pp. 125787
Author(s):  
Sikha Hiloidari ◽  
Manavalan Satyanarayanan ◽  
Surya Pratap Singh ◽  
Rajneesh Bhutani ◽  
K.S.V. Subramanyam ◽  
...  
Keyword(s):  
Greenstone Belt

scholarly journals Oxygen Fugacity and Volatile Content of Syntectonic Magmatism in the Neoarchean Abitibi Greenstone Belt, Superior Province, Canada

Minerals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 966
Author(s):  
Baptiste Madon ◽  
Lucie Mathieu ◽  
Jeffrey H. Marsh
Keyword(s):  
Oxygen Fugacity ◽  
Greenstone Belt ◽  
Inductively Coupled Plasma ◽  
Gold Mineralization ◽  
Gold Deposits ◽  
Hydrothermal Systems ◽  
Chemical Diversity ◽  
Temporal Association ◽  
Volatile Content ◽  
Abitibi Subprovince

Neoarchean syntectonic intrusions from the Chibougamau area, northeastern Abitibi Subprovince (greenstone belt), may be genetically related to intrusion related gold mineralization. These magmatic-hydrothermal systems share common features with orogenic gold deposits, such as spatial and temporal association with syntectonic magmatism. Genetic association with magmatism, however, remains controversial for many greenstone belt hosted Au deposits. To precisely identify the link between syntectonic magmas and gold mineralization in the Abitibi Subprovince, major and trace-element compositions of whole rock, zircon, apatite, and amphibole grains were measured for five intrusions in the Chibougamau area; the Anville, Saussure, Chevrillon, Opémisca, and Lac Line Plutons. The selected intrusions are representative of the chemical diversity of synvolcanic (TTG suite) and syntectonic (e.g., sanukitoid, alkaline intrusion) magmatism. Chemical data enable calculation of oxygen fugacity and volatile content, and these parameters were interpreted using data collected by electron microprobe and laser ablation-inductively coupled plasma-mass spectrometry. The zircon and apatite data and associated oxygen fugacity values in magma indicate that the youngest magmas are the most oxidized. Moreover, similar oxygen fugacity and high volatile content for both the Saussure Pluton and the mineralized Lac Line intrusion may indicate a possible prospective mineralized system associated with the syntectonic Saussure intrusion.

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