Termobarometría y termocronología: Aplicaciones al estudio de los pórfidos de cobre de La Caridad y Suaqui verde

Autores/as

DOI:

https://doi.org/10.36790/epistemus.v15i31.206

Palabras clave:

U-Pb en apatitos, termobarometría Al-en-hornblenda, trazas de fisión, exhumación

Resumen

Clásicamente, se considera que los depósitos de tipo pórfidos de cobre se forman entre 2 y 4 km de profundidad. Sin embargo, en la provincia Basin and Range, algunos pórfidos de cobre como los de La Caridad y Suaqui Verde permanecieron preservados en el bloque de piso de fallas normales. Este trabajo propone un estudio comparativo de estos dos depósitos, combinando análisis de termobarometría y de termocronología para cuantificar la profundidad de emplazamiento y la historia de enfriamiento de los plutones, respectivamente. Los resultados sugieren que la profundidad de emplazamiento de los pórfidos de cobre podría ser superior a 4 km. Además, muestran que el este de Sonora no registró un aumento significativo de la tasa de exhumación durante la extensión Basin and Range, lo que puede explicar la buena preservación de los depósitos del Cretácico-Eoceno en esta región.

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Publicado

2022-04-08

Cómo citar

Noury, M., & Calmus, T. (2022). Termobarometría y termocronología: Aplicaciones al estudio de los pórfidos de cobre de La Caridad y Suaqui verde. EPISTEMUS, 15(31), 70–78. https://doi.org/10.36790/epistemus.v15i31.206

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Métrica