Examinando por Materia "PETROGÉNESIS"
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Ítem Análisis de las variaciones en la distribución, profundidad y fuente de las rocas plutónicas jurásicas de la Cordillera Central de Colombia y sus implicaciones en la evolución del Norte de los Andes(Universidad EAFIT, 2019) Cadavid Isaza, Camilo; Madrid Hincapié, Lorena; Bustamante Londoño, CamiloÍtem Automatic identification of foraminiferal associations and their paleoenvironmental implications, Galembo Member of the La Luna Formation, Colombia(Universidad EAFIT, 2022) Grateron Estrada, Mayra Alejandra; Beltrán Triviño, Alejandro Iván; Páez Reyes, Manuel Arnulfo; San Martín Cañas Janowsky, StephanieÍtem Caracterización morfológica del depósito vetiforme epitermal en el NE del Batolito Antioqueño – Mina Los Balsos, Yolombó – Antioquia(Universidad EAFIT, 2023) Cataño Soto, Cristian Camilo; Marín Cerón, María Isabel; Marín Cerón, María IsabelIt is important to understand the morphology of a vein-type mineralization when seeking to estimate resources, as this knowledge supports subsequent decision-making in exploration and extraction processes, especially when structural factors play a significant role in mineral accumulation. In order to provide a tool that optimizes the exploration processes of the Los Balsos Mine project, a morphological model is being developed for the majority of structures intercepted by its tunneling, which serves as a basis for understanding the spatial behavior of veins, their hierarchization, spatial interaction, and their relationship with regional events. This information can be complemented with petrographic data in future projects. The study area is located in the northeastern part of the Antioquian batholith, in the youngest region of the body, where quartz vein deposits accompanied by sulfides are present and displaced by the interference zone of the Palestina Fault. These structures suffer from significant deficiencies in geometric and structural characterization, mainly due to the challenging accessibility of the area, which is mostly exploited by informal projects and lacks technical information in the public domain. That is why detailed mapping supported by samples and structural data was carried out, digitized into maps (1:500 and 1:50) that serve as the basis for prospective models. These models propose future exploration targets, which in turn facilitate economically and scientifically significant decision-making.Ítem Caracterización petrográfica y geoquímica de las rocas plutónicas del sector Alto de Chuare – Municipio de López de Micay, Departamento del Cauca, Colombia(Universidad EAFIT, 2019) Martínez Castaño, Karina; Martínez Castaño, Christopher; Marín Ceron, María IsabelÍtem Caracterización petroquímica del deposito VMS en la Mina el Roble(Universidad EAFIT, 2021) Plata Otero, Pedro Jose; Monroy Reyes, Diego Alejandro; Marín Cerón, María IsabelÍtem Caracterización petroquímica y análisis de susceptibilidad magnética de las calititas propuestas como "tectitas" en la subcuenca Cauca, Colombia(Universidad EAFIT, 2022) Barrera Jaramillo, Luz Marina; Sánchez Acosta, Juanita; Marín Cerón, María IsabelÍtem Evolución termo-cinemática de rocas generadoras y estimación de hidrocarburos retenidos en un área estructuralmente compleja : caso cretácico superior, Valle Medio del Magdalena (VMM)(Universidad EAFIT, 2021) Sánchez Rueda, Nelson; Guzmán Vega, Mario Alberto; Quintero Montoya, Olga LucíaÍtem Las rocas de Colombia / por Ricardo Lleras Codazzi, profesor de mineralogía y geología en la Universidad Nacional, Conservador del Museo de Historia Natural(Bogotá : Imprenta Nacional, 1928) Lleras Codazzi, Ricardo, 1869-1940Ítem Metalogénesis en depósitos tipo placer asociados genéticamente con áreas ígneo-metamórficas en el Bajo Cauca : caso de estudio Mina Lucky (Antioquia – Colombia)(Universidad EAFIT, 2023) Chávez Arrieta, María Alejandra; Gómez Gutiérrez, Diego FelipeHistorically, mineral extraction in Colombia has taken place on a small scale and in an artisanal manner, serving as a means of livelihood for some communities in the country. Gold has been considered an economic driver in the development of the northeastern Antioquia region, particularly in the Mining District of Bajo Cauca-Nechí, renowned for gold exploitation in Quaternary age placer deposits associated with terraces and alluvial formations, generated by the fluvial dynamics of the Cauca and Nechí rivers. However, over time, petrographic analysis has not been conducted to identify the mineralogical composition of the exposed lithological units in the area. Petrographic/metallographic characterization enables the establishment of transport conditions and deposition mechanisms for gold particles. This approach will provide detailed information on the compositional and textural features of mineralization present in the alluvial deposit of the study area. The mineralogy of the analyzed deposit in its concentrates of black sands is composed of oxides such as Magnetite (Mt), Ilmenite (Ilm), and Hematite (Hm), accompanied by laminarly arranged fractions of gold. From a petrographic perspective, the mineralogical relationship was analyzed, revealing a significant presence of Magnetite with small inclusions of sulfides like Pyrite (Py) and the existence of silicate group minerals such as Zircons (Zir), Garnet (Gnt), and Epidote (Ep). This study focused on analyzing the mineralogical composition and textural features of the paleoplacer-type deposit in Bajo Cauca. This allowed the establishment of information regarding the geological conditions during the formation of the observed mineralogy in the deposit. The information will serve as a foundation to establish specific aspects of the genetic model of the deposit, which is crucial in the exploration and exploitation of mineral deposits, facilitating an understanding of the conditions in their source areas that favored their formation.Ítem Petrofacies cuantitativas a partir de análisis multivariado en la formación Amagá(Universidad EAFIT, 2021) Giraldo Gómez, José Daniel; Cárdenas Rozo, Andrés LeonardoÍtem Petrogenesis of the Mariquita stock : record of the final pulse of Jurassic to Early Cretaceous arc magmatism in the Northern Andes(Universidad EAFIT, 2020) Cardona Gallego, Isabel; Bustamante Londoño, CamiloÍtem Petrografía y geoquímica de las rocas volcánicas de la FM. Saldaña y su relación con el Batolito de Ibagué(Universidad EAFIT, 2019) Benavides Castrillón, Laura Andrea; Bustamante Londoño, Camilo