Tennobarometría en el complejo metamórfico de Scotia, cabo Lookout, isla Elefante
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Date
1986
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Abstract
El geotermómetro biotita-granate indica temperaturas de equilibrio cercanas a 460ºC en esquistos cercanos a cabo Lookout, isla Elefante, probablemente vigente en las etapas finales del metamorfismo durante el cual se genera la foliación S2 predominante en las rocas. Inclusiones fluidas secundarias en una veta de cuarzo alojada en S2 indican temperaturas de atrapamiento similares a presiones del orden de 2 kb. Los valores de P y T indicados son probablemente
valores mínimos para estas rocas de la facies de anfibolita o anfibolitas de albita-epidota.
The biotite-garnet geothermometer indicates equilibrium temperatures of -460ºC in schists near Cape Lookout, Elephant Island. This was probably the temperature during the waning stages of the metamorphic episode in which the predominant S2 foliation was generated. Secondary fluid inclusions in quartz veins along 52 indicate pressures of ca. 2 Kb for similar temperatures. The indicated P and T values are probably minimum values for the amphibolite to albite-epidote amphibolite metamorphism facies of the rocks.
The biotite-garnet geothermometer indicates equilibrium temperatures of -460ºC in schists near Cape Lookout, Elephant Island. This was probably the temperature during the waning stages of the metamorphic episode in which the predominant S2 foliation was generated. Secondary fluid inclusions in quartz veins along 52 indicate pressures of ca. 2 Kb for similar temperatures. The indicated P and T values are probably minimum values for the amphibolite to albite-epidote amphibolite metamorphism facies of the rocks.
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Termobarometría
Citation
Serie Científica, nº 34, pp. 47-52, 1986