Publicación: CONDICIONES DE P-T DE LOS ESQUISTOS ACTINOLÍTICOS DEL COMPLEJO CAJAMARCA AL SURESTE DE MONTEBELLO, ANTIOQUIA
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Universidad Industrial de Santander
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La historia de evolución presión y temperatura (P-T) para los esquistos actinolíticos en el sector suroccidental del municipio de Montebello, departamento de Antioquia, revelan un peak de temperaturas entre 320 a 475 ºC y presiones de 2 a 6 kilobares, con base en las relaciones texturales y termobarométricas de los minerales metamórficos. Los datos de (P-T-t) definen una posible trayectoria antihoraria y en el campo de las facies de los esquistos verdes. El protolito de estas rocas corresponde a basaltos generados en zonas de dorsal oceánica confirmado, además, por la fase mineral ígnea.
Palabras claves: Termobarometría, esquistos actinolíticos, Complejo Cajamarca
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
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