Las correcciones estructural y tectónica en el tratamiento de los datos magnéticos

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Published: Jul 1, 1988
DOI: https://doi.org/10.22201/igeof.00167169p.1988.27.3.1206
Keywords:
Magnetic data, cylindrical folds, conical folds, correction techniques, structural correction, tectonic correction

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J. Selles Martínez
Geolog(a estructural, Depto. de Ciencias Geológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, CP 1428, Buenos Aires, ARGENTINA

Abstract

Limitations of conventional "fold test" are analyzed, pointing out thcir failure when working with conical folds. A procedure is developed for the case of a cylindrical fold with plunging axis, which was not taken into account by the fold test. General properties of conical surfaces are analyzed and techniques to use in the case of folds with horizontal or plunging cone axes are developed. A technique to be applied to the case of a collection of samples from a rotated block associated with a tilted fault is also presented. "Structural" and "Tectonic" corrections are differenciated. Stereographic diagrams helping in the identification of geomctrical characteristics of folds are presented.
doi: https://doi.org/10.22201/igeof.00167169p.1988.27.3.1206

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Selles Martínez, J. (1988). Las correcciones estructural y tectónica en el tratamiento de los datos magnéticos. Geofisica Internacional, 27(3), 379–393. https://doi.org/10.22201/igeof.00167169p.1988.27.3.1206
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Vol. 27 No. 3 (1988): July 1, 1988
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References

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MacDONALD, W., 1980. Net tectonic rotation. Apparent rotation and the structural tilt correction in paleomagnetic studies. J. Geophys. Res., 85, B7, 3659-3669. DOI: https://doi.org/10.1029/JB085iB07p03659

McELHENNY, M. W., 1964. Statistical significance of the fold test in paleomagnetism. Geophys. J. Roy. Astr. Soc. 8, 3, 338-340. DOI: https://doi.org/10.1111/j.1365-246X.1964.tb06300.x

SELLES MARTINEZ, J., 1988. La proyección estereográfica. Principios y aplicaciones en Geología Estructural. Asoc. Geol. Arg., Buenos Aires.