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DIGITAL.CSIC
Article . 2011 . Peer-reviewed
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Minerales accesorios de Fe y Ti en las intrusiones alcalinas de Tamargada, La Gomera (Islas Canarias)

Authors: Rodríguez-Losada, José A.; Nuez, J. de la; Martínez-Frías, J.;

Minerales accesorios de Fe y Ti en las intrusiones alcalinas de Tamargada, La Gomera (Islas Canarias)

Abstract

[ES]: Se define por primera vez, la aparición de fases metálicas ligadas a procesos hidrotermales en La Gomera (Islas Canarias). Se estudian paragénesis de pirita-pirrotina y magnetita-ilmenita para la estimación de sus condiciones de cristalización en las intrusiones alcalinas de Tamargada. La primera asociación indica condiciones de estabilidad entre 650 y 700°C para cristales idiomorfos primarios, mientras que los tipos alotriomorfos se formaron a menos de 500°C, como consecuencia de un metamorfismo de tipo hidrotermal. La paragénesis magnetitailmenita señala un intervalo entre 700 y 790°C que corresponde a la temperatura de cristalización magmática.

[EN]: Ore phases linked to hydrothermal processes were detected in La Gomera (Islas Canarias). Pyrite-pyrrhotite and magnetite-ilmenite associations in Tamargada's alkaline rocks are studied and used as geothermometric indicators. The former pair suggests a stability about 650-700°C for primary and idiomorphic types, and less than 500°C for secundary allotriomorphic ones, formed by hydrothermal metamorphism. Magnetite-ilrnenite pairs, point out an interval about 700-790°C that would come up to the magmatic crystallization temperature.

6 páginas, 7 figuras, 1 tabla.

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Country
Spain
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Keywords

Minerales Fe y Ti, Tamargada, La Gomera, Alkaline rocks, Fe-Ti minerals, Canarias, Rocas alcalinas

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
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