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On the use of magnetic techniques for stratigraphic purposes : examples from the Lower Palaeozoic Anglo-Brabant Deformation Belt (Belgium)

(2010) GEOLOGICA BELGICA. 13(4). p.333-350
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Abstract
Within the Lower Palaeozoic Anglo-Brabant Deformation Belt, magnetic susceptibility on its own does not allow for a straightforward distinction between different lithostratigraphic units, except for the high-susceptibility levels of the Lower Cambrian Tubize Formation. Moreover, the variation in magnetic susceptibility within individual lithostratigraphic units is often larger than that between different units, but at the same time, this internal variation in susceptibility may show no clear relationship to features obvious in outcrop or hand specimens. Hence, the applicability of magnetic susceptibility for stratigraphic purposes in the Anglo-Brabant Deformation Belt is low. Better results are obtained using the temperature-dependent variation in terms of percentage of magnetic susceptibility within the "room temperature interval". Also the anisotropy of magnetic susceptibility allows for a better distinction between different lithostratigraphic units than does magnetic susceptibility. The best results are obtained by a comparison of thermal demagnetisation curves of magnetic remanence, used for determining ferromagnetic mineralogy. This method even allows distinguishing lithostratigraphic units in which ferromagnetic carriers do not contribute to overall magnetic susceptibility and its anisotropy. Ideally, each magnetic technique should be used for stratigraphic purposes only in combination with other magnetic techniques. Moreover, knowledge about the magnetic carriers (s.l.) facilitates this use of magnetic techniques and strongly improves the accuracy of the interpretations.
Keywords
SUSCEPTIBILITY, ANISOTROPY, composite fabric, AMS, LOW-GRADE, ROCK FABRICS, ferromagnetic mineralogy, magnetic susceptibility, magnetic fabric, STRAIN, SEDIMENTS, MASSIF

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MLA
Debacker, Timothy, Manuel Sintubin, and Philippe Robion. “On the Use of Magnetic Techniques for Stratigraphic Purposes : Examples from the Lower Palaeozoic Anglo-Brabant Deformation Belt (Belgium).” GEOLOGICA BELGICA 13.4 (2010): 333–350. Print.
APA
Debacker, T., Sintubin, M., & Robion, P. (2010). On the use of magnetic techniques for stratigraphic purposes : examples from the Lower Palaeozoic Anglo-Brabant Deformation Belt (Belgium). GEOLOGICA BELGICA, 13(4), 333–350.
Chicago author-date
Debacker, Timothy, Manuel Sintubin, and Philippe Robion. 2010. “On the Use of Magnetic Techniques for Stratigraphic Purposes : Examples from the Lower Palaeozoic Anglo-Brabant Deformation Belt (Belgium).” Geologica Belgica 13 (4): 333–350.
Chicago author-date (all authors)
Debacker, Timothy, Manuel Sintubin, and Philippe Robion. 2010. “On the Use of Magnetic Techniques for Stratigraphic Purposes : Examples from the Lower Palaeozoic Anglo-Brabant Deformation Belt (Belgium).” Geologica Belgica 13 (4): 333–350.
Vancouver
1.
Debacker T, Sintubin M, Robion P. On the use of magnetic techniques for stratigraphic purposes : examples from the Lower Palaeozoic Anglo-Brabant Deformation Belt (Belgium). GEOLOGICA BELGICA. 2010;13(4):333–50.
IEEE
[1]
T. Debacker, M. Sintubin, and P. Robion, “On the use of magnetic techniques for stratigraphic purposes : examples from the Lower Palaeozoic Anglo-Brabant Deformation Belt (Belgium),” GEOLOGICA BELGICA, vol. 13, no. 4, pp. 333–350, 2010.
@article{1088109,
  abstract     = {Within the Lower Palaeozoic Anglo-Brabant Deformation Belt, magnetic susceptibility on its own does not allow for a straightforward distinction between different lithostratigraphic units, except for the high-susceptibility levels of the Lower Cambrian Tubize Formation. Moreover, the variation in magnetic susceptibility within individual lithostratigraphic units is often larger than that between different units, but at the same time, this internal variation in susceptibility may show no clear relationship to features obvious in outcrop or hand specimens. Hence, the applicability of magnetic susceptibility for stratigraphic purposes in the Anglo-Brabant Deformation Belt is low. Better results are obtained using the temperature-dependent variation in terms of percentage of magnetic susceptibility within the "room temperature interval". Also the anisotropy of magnetic susceptibility allows for a better distinction between different lithostratigraphic units than does magnetic susceptibility. The best results are obtained by a comparison of thermal demagnetisation curves of magnetic remanence, used for determining ferromagnetic mineralogy. This method even allows distinguishing lithostratigraphic units in which ferromagnetic carriers do not contribute to overall magnetic susceptibility and its anisotropy.
Ideally, each magnetic technique should be used for stratigraphic purposes only in combination with other magnetic techniques. Moreover, knowledge about the magnetic carriers (s.l.) facilitates this use of magnetic techniques and strongly improves the accuracy of the interpretations.},
  author       = {Debacker, Timothy and Sintubin, Manuel and Robion, Philippe},
  issn         = {1374-8505},
  journal      = {GEOLOGICA BELGICA},
  keywords     = {SUSCEPTIBILITY,ANISOTROPY,composite fabric,AMS,LOW-GRADE,ROCK FABRICS,ferromagnetic mineralogy,magnetic susceptibility,magnetic fabric,STRAIN,SEDIMENTS,MASSIF},
  language     = {eng},
  number       = {4},
  pages        = {333--350},
  title        = {On the use of magnetic techniques for stratigraphic purposes : examples from the Lower Palaeozoic Anglo-Brabant Deformation Belt (Belgium)},
  url          = {http://popups.ulg.ac.be/Geol/document.php?id=3166},
  volume       = {13},
  year         = {2010},
}

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