Artículos
U-Pb LA-ICP-MS GEOCHRONOLOGY AND REGIONAL CORRELATION OF MIDDLE JURASSIC INTRUSIVE ROCKS FROM THE GARZON MASSIF, UPPER MAGDALENA VALLEY AND CENTRAL CORDILLERA, SOUTHERN COLOMBIA
Cómo citar
Bustamante, C., Cardona, A., Bayona, G., Mora, A., Valencia, V., Gehrels, G., & Vervoort, J. (2010). U-Pb LA-ICP-MS GEOCHRONOLOGY AND REGIONAL CORRELATION OF MIDDLE JURASSIC INTRUSIVE ROCKS FROM THE GARZON MASSIF, UPPER MAGDALENA VALLEY AND CENTRAL CORDILLERA, SOUTHERN COLOMBIA. Boletín De Geología, 32(2). Recuperado a partir de https://revistas.uis.edu.co/index.php/revistaboletindegeologia/article/view/2086
Resumen
Se presentan nuevas edades U-Pb en circones de cuatro unidades graníticas muestreadas a lo largo de una transecta SE-NW entre el Macizo de Garzón y la Serranía de las Minas (Cordillera Central), las cuales registran una actividad magmática en el Jurásico Medio en dos dominios espaciales y temporales diferentes: 189 Ma y 180 a 173 Ma.
Estos cuatro granitoides tiene características mineralógicas y geoquímicas afines con un ambiente de arcomagmático continental. Los nuevos resultados sugieren que la margen continental al sur de Colombia incluye remanentes de elementos tectono-magmáticos formados por la subducción de la placa Farallón bajo la margen continental suramericana. Este magmatismo de arco del Jurásico medio es parte de la provincia de arco que se presenta a lo largo de los Andes, y es importante para el entendimiento de la dinámica tectónica y la paleogeografía que caracterizó el Mesozoico de los Andes del Norte.
Palabras clave: Geocronología U-Pb, Colombia, Jurásico, Rocas intrusivas, Macizo de Garzón, CordilleraCentral.
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Referencias
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Geometrical control of subduction-related magmatism: the Mesozoic and Cenozoic plutonic history of Western Colombia. Journal of the Geological Society, London, 144, 893-905.
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Geochronology of Proterozoic basement inliers from the Colombian Andes: tectonic history of remnants from a fragmented Grenville belt. In: Vaughan, A.P.M., Leat P.T., Pankhurst, R.J. (Eds.), Terrane Processes at the Margins of Gondwana. Geological Society of London, Special Publication 246, pp. 329–346.Cox, K.G., Bell, J.D.,
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Álvarez, J., 1981., Determinación de la edad Rb/Sr en rocas del Macizo de Garzón, Cordillera Oriental de Colombia. Geología Norandina, (4): 31-38.Álvarez, J., Linares, E., 1983. Edad K-Ar del plutón granitoide de La Plata, Departamento del Huila (Colombia).
Geología Norandina, (7): 35 - 38.Altenberger, U., Concha, A., 2005. Late lower to early Middle Jurassic arc magmatism in the northern Ibagué Batholith (Colombia). Geología Colombiana, (30): 87-97.Aspden, J.A., McCourt, W.J., Brook, M., 1987.
Geometrical control of subduction-related magmatism: the Mesozoic and Cenozoic plutonic history of Western Colombia. Journal of the Geological Society, London, 144, 893-905.
Bayona, G., García, D., Mora, G., 1994. La Formación Saldaña: producto de la actividad de estratovolcanes continentales en un dominio de retroarco, en Etayo-Serna, F., ed., Estudios Geológicos del Valle Superior del Magdalena: Bogotá, Universidad Nacional de Colombia, Capítulo I, 21 p.
Bayona, G., Cortés, M., Jaramillo, C., Ojeda, G., Aristizabal, J. J., Reyes-Harker, A., 2008. An integrated analysis of an orogen–sedimentary basin pair: Latest Cretaceous–Cenozoic evolution of the linked Eastern Cordillera orogen and the Llanos foreland basin of Colombia.
Geological Society of America Bullettin, 120, 1171-1190 Bayona, G., Jiménez, G., Silva, C., Cardona, A., Montes, C., Roncancio, J., Cordani, U.G., in review. Paleomagnetic data and K–Ar ages from Mesozoic units of the Santa Marta massif: A preliminary interpretation for block rotation and translations. Journal of South American Earth Sciences. 29 (4), 817-831.Bayona, G., Rapalini, V., Constazo-Alvarez, V. 2006.
Paleomagnetism in Mesozoic rocks of the northern Andes and its implications in Mesozoic tectonics of northwestern South America. Earth Planets Space. 58, 1–18.Brook, M., 1984. New radiometric age data from SW Colombia. INGEOMINAS-Misión Británica (British Geological Survey), Cali, Colombia. Report 10.Cardona, A., Valencia, V., Garzón, A., Montes, C., Ojeda, G., Ruiz, J., Weber, M., 2010.
Permian to Triassic I to S-type magmatic switch in the northeast Sierra Nevada de Santa Marta and adjacent regions, Colombian Caribbean: Tectonic setting and implications within Pangea paleogeography. Journal of South American Earth Sciences. 29 (4), 772-783.Cediel, F., Shaw, R.P., Cáceres, C., 2003. Tectonic assembly of the Northern Andean Block. In: Bartolini, C., Buffer, R.T.,
Blickwede, J. (Eds.), The Circum-gulf of Mexico and the Caribbean: Hydrocarbon Habitats, Basin Formation, and Plate Tectonics. AAPG memoir 79, pp. 815–848.Chang, Z., Vervoort, J.D. McClelland, W.C., Knaack C., 2006. U-Pb dating of zircon by LA-ICP-MS, Geochemistry, Geophysics, Geosystems, 7(5): 1-14.Cordani, U.G., Cardona, A., Jimenez, D., Liu, D., Nutman, A.P., 2005.
Geochronology of Proterozoic basement inliers from the Colombian Andes: tectonic history of remnants from a fragmented Grenville belt. In: Vaughan, A.P.M., Leat P.T., Pankhurst, R.J. (Eds.), Terrane Processes at the Margins of Gondwana. Geological Society of London, Special Publication 246, pp. 329–346.Cox, K.G., Bell, J.D.,
Pankhurst, R. J., 1979. The Interpretation of Igneous Rocks. George Allen & Unwin.Dickinson, W.R., Gehrels, G.E., 2003.U–Pb ages of detrital zircons from Permian and Jurassic eolian sandstones of the Colorado Plateau, USA; paleogeographic implications. Sedimentary Geology 163, 29–66.Ernst, W.G., 1999. Hornblende, the continent maker; evolution of H2O during circum-Pacific subduction versus continental collision. Geology, 27, 675-678.Gehrels, G., Valencia, V.A., Ruiz, J., 2008.
Enhanced precision, accuracy, efficiency, and spatial resolution of U-Pb ages by laser ablation-multicollector-inductively coupled plasma-mass spectrometry: Geochemistry, Geophysics, and Geosystems, 9, pp. 3.Harris, N.B.W., Pearce, J.A., Tindle, A.G., 1986.
Geochemical characteristics of collision-zone magmatism. In: Coward, M.P., Ries, A.C. (Eds) Collision Tectonics, Geological Society Special Publication 19, pp. 67-81.
Hervé, F., Pankhurst, R.J., Fanning, C.M., Calderón, M., Yaxley, G.M., 2007. The South Patagonian batholith: 150 my of granite magmatism on a plate margin. Lithos 97, 373-394