Controles de la fábrica magnética en areniscas de la formación Cuculí (mioceno, precordillera de San Juan)

Autores/as

  • Sebastián Oriolo Departamento de Ciencias Geológicas, Universidad de Buenos Aires
  • Guillermo Héctor Ré Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires (CONICET–UBA)
  • María Silvia Japas Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires (CONICET–UBA)
  • Ernesto Osvaldo Cristallini Laboratorio de Modelado Geológico, Instituto de Estudios Andinos Don Pablo Groeber (CONICET–UBA)

Palabras clave:

anisotropía de susceptibilidad magnética, petrofábrica, cinemática, Andes Centrales, plegada y corrida

Resumen

Se llevó a cabo un estudio preliminar de fábrica magnética y petrofábrica en areniscas de la Formación Cuculí (Mioceno) en dos localidades de la Precordillera de San Juan y sus resultados fueron comparados con datos obtenidos a partir de estudios cinemáticos de otros autores en el mismo sector. El estudio de la anisotropía de susceptibilidad magnética (ASM) revela elipsoides triaxiales con grados muy bajos de anisotropía. Dado que las rocas analizadas no presentan evidencias macro– o microscópicas de deformación interna, se interpreta que los elipsoides de ASM representan fábricas mágneticas compuestas incipientes, donde la fábrica sedimentaria es un importante factor de control en su desarrollo.

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Citas

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Publicado

2014-11-03

Cómo citar

Oriolo, S., Ré, G. H., Japas, . M. S., & Cristallini, E. O. (2014). Controles de la fábrica magnética en areniscas de la formación Cuculí (mioceno, precordillera de San Juan). Geoacta, 39(2), 30–43. Recuperado a partir de https://revistas.unlp.edu.ar/geoacta/article/view/13547

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