Examinando por Materia "ROCAS"
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Ítem Aplicación del método de anisotropía de susceptibilidad magnética en neotectónica : caso de estudio Valle de Aburrá y alrededores(Universidad EAFIT, 2020) Jaraba Fernández, Duvan Alejandro; Ruiz Suta, Maria Paula; Marín Cerón, Maria Isabel; Noriega Londoño, SantiagoMagnetic susceptibility anisotropy (ASM) is a method that allows characterizing the magnetic factory of rocks and sediments, and this in turn serves to estimate the type of tectonic deformation generated by a stress field. In the zone of influence of an active fault, the magnetic factory allows to measure the tectonic deformation associated with the displacement of said structure, in addition, if this deformation is printed in quaternary deposits, it is possible to estimate the geometry and kinematics of these faults and contribute to the neotectonic knowledge of a region. This work explores the application of ASM techniques on deformed quaternary deposits that cover active faults with the aim of providing information about the geometry and kinematics of faults with recent displacements in the eastern and western edge of the Aburrá Valley, where they have been reported neotectonic sites of interest. The results obtained suggest that there is a relationship in deformation for both sides of the Aburrá Valley due to the similarities in the maximum and minimum stresses and the anisotropy present at each point of interest. Finally, it is concluded that the application of ASM in sediments deformed by active faults provides fundamental information for the calibration of the models of tectonic evolution and the evaluation of the seismic threat in the metropolitan area of the Valle de Aburrá and its neighboring sectorsÍtem Aproximación metodológica para la evaluación del potencial de uso de un depósito de arcillas caoliníticas ubicado en la Cordillera Oriental de Colombia(Universidad EAFIT, 2020) Wilches Rivas, David; Ortega Pérez, Diana CristinaÍtem Caracterización de la Dunita de Medellín como material de balasto ferroviario(Universidad EAFIT, 2019) Patiño Lara, Johan Sebastián; Villa Pérez, Nicol; Beltrán Triviño, Alejandro IvánÍtem Caracterización geoeléctrica del acuífero libre del suroccidente del Valle de Aburrá, a partir de tomografías eléctricas calibradas con un modelo geológico inicial y de física de rocas(Universidad EAFIT, 2020) Ospina Benítez, David; Vanegas Cubillos, Sebastián; Jaramillo Uribe, Marcela; Restrepo Correa, Isabel CristinaThe initial geological (IGM) and rock physics (RPM) models are important tools in the processes of geophysical inversion (electrical resistivity tomography) and their interpretation, when they are used in order to achieve the stratigraphic and hydrogeological characterization of a zone of study. The IGMI and RPM are built from the processing of primary and / or secondary information, generating a schematic representation of the area which contributes to the understanding of the physical properties of the materials. These initial models must be implemented for the interpretation of data in shallow geophysics. In the case of electrical tomography, the interpretations depend largely on the quality of the field data, the processing and the amount of geological information available. The implementation of IGM and RPM is a fundamental tool to reduce the uncertainty related to the problem of non-uniqueness in geoelectric investments. For the construction of the IGM of the study area, the available geological cartography and stratigraphic columns were considered, this information allowed to perform stratigraphic correlations and geological profiles. While for the RPM, the information used was apparent resistivities of materials in the study area and their granulometric characteristics. Geological sections, stratigraphic correlations, and expected resistivity ranges in the materials in the study area are the most important parameters in the interpretation of electrical tomography. This study analyzes the case of the unconfined aquifer of Valle De Aburrá defined by AMVA and UdeA (2012), AMVA and UdeA (2013) of the southwestern zone, where it is mainly composed of unconsolidated deposits. Through geophysical interpretation it was found that the materials that composed these deposits in the study area have textural variations and, therefore, their classification and their hydrogeological behavior are heterogeneous.Ítem Contribución de las herramientas de teledetección y procesamiento computacional en la estimación de caídas de rocas en proyectos viales(Universidad EAFIT, 2024) López Rodríguez, Juan Diego; N/AThis study analyses the use of remote sensing and computational processing tools for the quantitative estimation of rock falls in road projects. Advanced technologies such as LiDAR (Light Detection and Ranging) and digital photogrammetry allow for the generation of detailed three-dimensional models and the acquisition of high-resolution data of rock masses, significantly improving the risk assessment of slopes. These techniques overcome the limitations of traditional methods by facilitating access to hard-to-reach areas and offering greater precision in the identification of risk zones. The use of processing programs such as the Discontinuity Set Extractor (DSE) enables the identification and characterization of discontinuities in rock masses, a key factor in the analysis of slope stability. Likewise, the use of simulation software such as RocFall and RockGIS allows for the modelling of trajectories and distributions of blocks during their fall, providing essential information for the planning of mitigation measures. In particular, the implementation of the fractal fragmentation model in RockGIS represents a significant advance, improving the simulation of block behavior and, therefore, the effectiveness of protection strategies. The results indicate that the application of these technologies contributes significantly to road safety by providing detailed information that optimizes the design of containment barriers and other protection solutions. Also, the improvement towards the possible complete automation of these processes could further increase the efficiency in the management of geological risks in road projects, promoting the safety and sustainability of infrastructures.Ítem Geochemistry and geochronology of the Permian arc magmatism of the Central Cordillera of Colombia(Universidad EAFIT, 2022) Restrepo Velásquez, Marcela; Bustamante Londoño, CamiloÍtem Identificación de cadmio (Cd) soluble en rocas fosfóricas y su relación con diversas propiedades encontradas sobre yacimientos empleados para la producción de fertilizantes de la Cordillera Oriental(Universidad EAFIT, 2022) Rojas Jaimes, Pablo Alejandro; Ortega Pérez, Diana CristinaÍtem Identificación, caracterización y agregación de valor de la diatomita presente en la Formación Tilatá en el municipio de Tuta-Boyacá, para su aplicación en el campo de la nanotecnología(Universidad EAFIT, 2021) Bemudez Cañón, Mateo Alexandro; Cárdenas Angarita, María Camila; Ortega Pérez, Diana CristinaÍtem Suite apinítica cretácica en la Cordillera Occidental de Colombia : Batolito de Santa Fe y Granulita de Pantanillo(Universidad EAFIT, 2024) Rentería Vergara, María Camila; Ribero García, Iván Darío; Bustamante Londoño, Camilo