MENESES MAP SHEET (4382-IV) AT SCALE 1: 50 000. GEOPHYSICAL INTERPRETATION
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Abstract
The interpretation of geophysical data in terrain geological mapping allows to obtain information related to the geological environment and proposing the geometry of structures according to the behavior of the physical fields. The geophysical data most used in this geological task are spectrometric, gravimetric and magnetic due to their effectiveness in identifying the main lithological units and structural features, as well as mapping the main tectonic limits of the area. As part of the preparation of the Meneses cartographic sheet (4382-IV) the interpretation of gamma-spectrometric, magnetic and gravimetric data was performed, using the geophysical interpretation software Oasis Montaj and Geographic Information Systems (GIS). For this, a statistical analysis of the gamma-spectrometric data was carried out to know its variability with respect to geology and to determine the main statistics that were used to identify anomalous areas. With these data, the concentration maps of the three radioelements (K, eTh, eU), ternary maps and gamma-spectrometric relationships were made, which were interpreted. For the interpretation of the magnetic and gravimetric data, mathematical filters such as horizontal gradients and the vertical derivative were applied to identify tectonic and lithological contacts. As a final result, gamma-spectrometric units and alignments were identified and described in an integrated interpretation map.
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References
Batista, J.C. (2017). Interpretación geofísica integrada para identificar el control estructural metalogénico de la zona favorable aurífera La Unión-La Botija, provincias Camagüey-Las Tunas, Cuba. Tesis en opción al grado de Ingeniero Geofísico (inédita), Universidad Tecnológica de La Habana “José Antonio Echeverría, La Habana.
Carrino, T.A., C.S. Filho Y E.P. Leite (2007): Avalição do uso de dados aerogeofísicos para mapeamento geológico e prospeccão mineral em terrenos intemperizados: o exemplo de Serra Leste, provincia mineral de Carajás. Revista Brasileira de Geofísica. Vol. 25 (3): 307-320.
Duval, J.S. (1983): Composite color images of aerial gamma-ray spectrometric data. GEOPHYSICS. Vol. 48: 722-735.
Mero, J.L., (1960): Uses of the Gamma-Ray Spectrometrer in Mineral Exploration. GEOPHYSICS. Vol. XXV (5): 1054-1076.
Mondelo, F. Y R. Sánchez (2011): Mapas geofísicos regionales de gravimetría, magnetometría, intensidad y espectrometría gamma de la República de Cuba, 1: 2 000 000 hasta 1: 50 000. La Habana.
Pardo, M.E., V. Bello, H. Amador, S. Taba, O. Sousin, I. Matamoros Y I.D. Moya (1989). Interpretación de los datos geofísicos con fines de la cartografía geólogo-estructural de la República de Cuba. Archivo Técnico. IGP.
Pujalte, E. (2010). Introducción a la Teledetección. Tesis en opción al grado de (inédita), Diplomado “Evaluación de Riesgo, Ecológicos y Climáticos e Impacto Ambiental”. La Habana.
Russell, W.L. y R.O. Steinhoff (1961): Radioactivity of Volcanic Sediments in Brazos County, Texas. GEOPHYSICS. Vol. XXVI (5): 618-625.
Serrano, K. (2015). Cartografía geólogo-estructural del área de Rodas-Fomento en Cuba Central a partir de datos geofísicos. Tesis en opción al grado de Ingeniero Geofísico (inédita), Instituto Superior Politécnico “José Antonio Echeverría”. La Habana.
Shives, R.B.K., B.W. Charbonneau Y K.L. Ford. (2000): The detection of potassic alteration by gamma-ray spectrometry. Recognition of alteration related to mineralization. GEOPHYSICS. Vol. 65 (6): 2001–2011.
Sousa, C. Y M. Lacerda (2009): A importância da aerogeofísica de alta resolução no mapeamento geológico: exemplo Domínio Erepecuru-Trombetas noroeste do estado do Pará. 11th International Congress of the Brazilian Geophysical Society & EXPOGEF 2009, Salvador, Bahia, Brasil.