Articles
P-T OF THE ACTINOLITIC SCHIST OF THE CAJAMARCA COMPLEX TO THE SOUTHEAST THE MONTEBELLO, ANTIOQUIA
How to Cite
Toro, L., Gomez, A. de J., & Bedoya, R. (2010). P-T OF THE ACTINOLITIC SCHIST OF THE CAJAMARCA COMPLEX TO THE SOUTHEAST THE MONTEBELLO, ANTIOQUIA. Boletín De Geología, 27(2). Retrieved from https://revistas.uis.edu.co/index.php/revistaboletindegeologia/article/view/871
Abstract
The P-T conditions were determinated in actinolitics schist of the basament of the Colombian Central Cordillera, in the southeast sector of Montebello, (Antioquia), the estimation of the pressure and temperature conditions was from 320 to 475 °C and 2 to 6 kbar; according to the textural and thermobarometric relations of the metamorphic minerals. A reconstruction in space and time of these P-T-t paths allows an estimate counterclockwise evolution in the greenschist facies field. The protolith of these rocks indicates them to be derived from oceanic floor basalts, in adition, for the igneous mineral phase.
Key words : Thermobarometry, actinolitic schist, Cajamarca Complex
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References
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Liou, J. G., Kuniyoshi, S. and Ito, K. (1974).Experimental studies of the phase relations betweengreenschist and amphibolite in a basaltic system. AmericanJournal of Science, Vol. 274, pp. 613-632
Bevis, R. E.; Robinson, D. and Rowbathan, G. (1991).Compositional variations in mafic phyllosilicates fromregional low grade metabasites and application of thechlorite geotermometer. Journal of Metamorphic Geology,Vol. 9, pp. 711-721.
Brown, E. H. (1976). The crossite content of Ca-amphibole as a guide to pressure of metamorphism,Journal of Petrology , Vol 18, pp. 53-72
Botero, G. (1963). Contribución al Conocimiento de laGeología de la Zona Central de Antioquia. Anales de laFacultad de Minas. Universidad Nacional. Medellín.Colombia.Vol. 57, 101 p
Cathelineau, M. (1988). Cation site ocupancy in choritesand illite as a funtion of temperature. Clay Minerals, Vol23, pp. 471-485
De Caritat, P. D., Hutcheon, I and Walshe, J. L. (1993).Chlorite geothermometry: A review. Clays and clayMinerals, Vol. 41, pp. 219-239
Droop, G. T. R. (1987). A general equation for estimatingFe3+ concentrations in ferromagnesian silicates and oxidesfrom microprobe analyses, using stoichiometric criteria,Mineralogical Magazine, Vol 51, pp. 431-435
Etayo-Serna, F., D. Barrero, H. Q. Lozano, A. Espinosa,H. Gonzalez, A. Orrego, I. T. Ballesteros, H. O. Forero,C. Q. Ramirez, F. Zambrano-Ortiz, H. Duque-Caro, R. H.Vargas, A. Nuñez, J. Alvarez, U. C. Ropain, E. P. Cardozo,N. Galvis, L. R. Sarmiento, J. P. Albers, J. E. Case, D. A.Singer, R. W.Bowen, B. R. Berger, D. P. Cox, and C. A.Hodges. (1986). Mapa de terrenos geológicos de Colombia:Publicaciones geológicas especiales. Ingeominas, Bogotá.Colombia, Vol. 14, 235 p
Feininger, T., Barrero, D., Castro, N. (1972). Geología deAntioquia y Caldas (subzona II-B9. Ingeominas, Bogotá.Bol, Geol., Vol. 20, No 2, 173 p
González, H. (1980). Geología de las Planchas 167Sonsón y 187 Salamina. Boletín Geológico. Ingeominas.Bogotá. Colombia, Vol. 23, No 1, 174 p
González, H. (2001). Mapa geológico del Departamentode Antioquia. Escala 1:400.000. Memoria Explicativa.Ingeominas, Bogotá. Colombia, 240 p
Hall, R. B., Alvarez, J. y Rico, H. (1972). Geología departe de los departamentos de Antioquia y Caldas (Sub-Zona II-a). Boletín Geológico. Ingeominas, Bogotá,Vol. 20, No 1, 85 p
Hey, M. H. (1954). A new rewiew of the chorites.Mineralogy Magazin, Vol. 30, 277 p
Hincapié, G., y Moreno, M. (2000). Comparación entrelas fases deformativas presentes en las metamórfitas delComplejo Cajamarca y en las metamórfitas del ComplejoArquía, en el departamento de Caldas. VIII CongresoColombiano de geología, memorias C-D. Manizales
Kitajima, K., Maruyama, S., Utsonomiya, S and Liou, G.(2001). Seafloor hydrotermal alteration at an Archaeanmid-ocean ridge. J. metamorphic Geol., Vol 19, pp. 581-597
Kushiro, I. (1960). Si-Al relations in clinopyroxenes fromigneous rocks. Amer. Jour. Sci., Vol. 258, pp. 548-554
Leake, B. E., Woolley, A. R. et al. (1997). Nomenclatureof amphiboles: Report of the subcommittee on amphibolesof the International Mineralogical Association, commissionon new minerals and mineral names. CanadianMineralogist, Vol 35, pp. 219-246
Le Bas, M. J., Maitre, R.W., Streckeisen, A., Zanettin, B.(1962). The role of igneous clinopyroxenes with relationto their parentaje. American Journal Science, 260, pp.270-288.Leterrier,
Leterrier, J., Maury, R. C., Thonon, P., Girard, D., Marchal,M.(1982). Clinopyroxene compostion as a method ofidentification of the magmatic affinities of paleo-volcanicseries. Earth and Planetary Science Letters, Vol. 59,pp.139-154
Liou, J. G., Kuniyoshi, S. and Ito, K. (1974).Experimental studies of the phase relations betweengreenschist and amphibolite in a basaltic system. AmericanJournal of Science, Vol. 274, pp. 613-632