Inversion tectonics and magnetic fabrics in Mesozoic basins of the Western Tethys: A review

C. García-Lasanta, B. Oliva-Urcia, A. M. Casas-Sainz, T. Román-Berdiel, E. Izquierdo-Llavall, R. Soto, P. Calvín, B. Moussaid, H. El Ouardi, J. C. Kullberg, J. J. Villalaín

Research output: Contribution to journalReview article

4 Citations (Scopus)

Abstract

Positive tectonic inversion of sedimentary basins has been recognized as one of the primary mechanisms of mountain building and intraplate deformation. Reconstructing the tectonic history of basins is relatively easy for the inversion stage but becomes more difficult for the basinal stage, especially when strong deformation involving cleavage development is associated with the subsequent compressional tectonics. Since tectonic markers for the extensional episodes are not commonly well developed, Anisotropy of Magnetic Susceptibility (AMS) has provided recently a tool for analyzing early stages in the evolution of sedimentary basins, even in the absence of other outcrop-scale mesostructures. Here, we expose and discuss the applicability of magnetic fabrics (by means of AMS) to different types of intra-plate sedimentary basins in the Western Tethys region formed under extensional or transtensional regimes and which underwent different inversion styles (total or partial inversion, with or without cleavage development, forming part of compressional thrust sheets, etc.) owing to specific particular p-T conditions and structural controls. Factors such as lithology, magnetic mineralogy, position within the sedimentary pile and deformation intensity are key to interpret the obtained magnetic fabrics in terms of tectonic evolution. A basin classification is proposed according to inversion styles and magnetic fabrics: Where inversion did not involve cleavage development, magnetic lineation is parallel to the stretching direction corresponding to the extensional stage. The transition between non-cleaved to inversion-related cleaved units is marked by the switch of magnetic lineations from parallel to extension to parallel to the intersection lineation between cleavage and bedding. These relationships are enhanced when extension and compression are roughly coaxial, then favoring the clustering of axes of the magnetic ellipsoid. Even when extreme inversion occurs and the early, extensional fabric is obliterated, magnetic fabrics provide information about the interaction between preferred deformation directions associated with the main stages in basin evolution.

Original languageEnglish
Pages (from-to)1-23
Number of pages23
JournalTectonophysics
Volume745
DOIs
Publication statusPublished - 16 Oct 2018

Fingerprint

Tethys
inversion tectonics
magnetic fabric
tectonics
inversions
cleavage
basin
lineation
sedimentary basin
magnetic anisotropy
magnetic permeability
structural control
anisotropy
inversion
basin evolution
outcrops
lithology
tectonic evolution
mineralogy
piles

Keywords

  • AMS
  • Intra-plate sedimentary basins
  • Inversion tectonics
  • Magnetic mineralogy
  • Western Tethys

Cite this

García-Lasanta, C., Oliva-Urcia, B., Casas-Sainz, A. M., Román-Berdiel, T., Izquierdo-Llavall, E., Soto, R., ... Villalaín, J. J. (2018). Inversion tectonics and magnetic fabrics in Mesozoic basins of the Western Tethys: A review. Tectonophysics, 745, 1-23. https://doi.org/10.1016/j.tecto.2018.08.005
García-Lasanta, C. ; Oliva-Urcia, B. ; Casas-Sainz, A. M. ; Román-Berdiel, T. ; Izquierdo-Llavall, E. ; Soto, R. ; Calvín, P. ; Moussaid, B. ; El Ouardi, H. ; Kullberg, J. C. ; Villalaín, J. J. / Inversion tectonics and magnetic fabrics in Mesozoic basins of the Western Tethys: A review. In: Tectonophysics. 2018 ; Vol. 745. pp. 1-23.
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abstract = "Positive tectonic inversion of sedimentary basins has been recognized as one of the primary mechanisms of mountain building and intraplate deformation. Reconstructing the tectonic history of basins is relatively easy for the inversion stage but becomes more difficult for the basinal stage, especially when strong deformation involving cleavage development is associated with the subsequent compressional tectonics. Since tectonic markers for the extensional episodes are not commonly well developed, Anisotropy of Magnetic Susceptibility (AMS) has provided recently a tool for analyzing early stages in the evolution of sedimentary basins, even in the absence of other outcrop-scale mesostructures. Here, we expose and discuss the applicability of magnetic fabrics (by means of AMS) to different types of intra-plate sedimentary basins in the Western Tethys region formed under extensional or transtensional regimes and which underwent different inversion styles (total or partial inversion, with or without cleavage development, forming part of compressional thrust sheets, etc.) owing to specific particular p-T conditions and structural controls. Factors such as lithology, magnetic mineralogy, position within the sedimentary pile and deformation intensity are key to interpret the obtained magnetic fabrics in terms of tectonic evolution. A basin classification is proposed according to inversion styles and magnetic fabrics: Where inversion did not involve cleavage development, magnetic lineation is parallel to the stretching direction corresponding to the extensional stage. The transition between non-cleaved to inversion-related cleaved units is marked by the switch of magnetic lineations from parallel to extension to parallel to the intersection lineation between cleavage and bedding. These relationships are enhanced when extension and compression are roughly coaxial, then favoring the clustering of axes of the magnetic ellipsoid. Even when extreme inversion occurs and the early, extensional fabric is obliterated, magnetic fabrics provide information about the interaction between preferred deformation directions associated with the main stages in basin evolution.",
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García-Lasanta, C, Oliva-Urcia, B, Casas-Sainz, AM, Román-Berdiel, T, Izquierdo-Llavall, E, Soto, R, Calvín, P, Moussaid, B, El Ouardi, H, Kullberg, JC & Villalaín, JJ 2018, 'Inversion tectonics and magnetic fabrics in Mesozoic basins of the Western Tethys: A review' Tectonophysics, vol. 745, pp. 1-23. https://doi.org/10.1016/j.tecto.2018.08.005

Inversion tectonics and magnetic fabrics in Mesozoic basins of the Western Tethys: A review. / García-Lasanta, C.; Oliva-Urcia, B.; Casas-Sainz, A. M.; Román-Berdiel, T.; Izquierdo-Llavall, E.; Soto, R.; Calvín, P.; Moussaid, B.; El Ouardi, H.; Kullberg, J. C.; Villalaín, J. J.

In: Tectonophysics, Vol. 745, 16.10.2018, p. 1-23.

Research output: Contribution to journalReview article

TY - JOUR

T1 - Inversion tectonics and magnetic fabrics in Mesozoic basins of the Western Tethys: A review

AU - García-Lasanta, C.

AU - Oliva-Urcia, B.

AU - Casas-Sainz, A. M.

AU - Román-Berdiel, T.

AU - Izquierdo-Llavall, E.

AU - Soto, R.

AU - Calvín, P.

AU - Moussaid, B.

AU - El Ouardi, H.

AU - Kullberg, J. C.

AU - Villalaín, J. J.

N1 - CGL2009-08969 CGL2016-77560-C2-1-P CGL2016-77560-C2-2-P

PY - 2018/10/16

Y1 - 2018/10/16

N2 - Positive tectonic inversion of sedimentary basins has been recognized as one of the primary mechanisms of mountain building and intraplate deformation. Reconstructing the tectonic history of basins is relatively easy for the inversion stage but becomes more difficult for the basinal stage, especially when strong deformation involving cleavage development is associated with the subsequent compressional tectonics. Since tectonic markers for the extensional episodes are not commonly well developed, Anisotropy of Magnetic Susceptibility (AMS) has provided recently a tool for analyzing early stages in the evolution of sedimentary basins, even in the absence of other outcrop-scale mesostructures. Here, we expose and discuss the applicability of magnetic fabrics (by means of AMS) to different types of intra-plate sedimentary basins in the Western Tethys region formed under extensional or transtensional regimes and which underwent different inversion styles (total or partial inversion, with or without cleavage development, forming part of compressional thrust sheets, etc.) owing to specific particular p-T conditions and structural controls. Factors such as lithology, magnetic mineralogy, position within the sedimentary pile and deformation intensity are key to interpret the obtained magnetic fabrics in terms of tectonic evolution. A basin classification is proposed according to inversion styles and magnetic fabrics: Where inversion did not involve cleavage development, magnetic lineation is parallel to the stretching direction corresponding to the extensional stage. The transition between non-cleaved to inversion-related cleaved units is marked by the switch of magnetic lineations from parallel to extension to parallel to the intersection lineation between cleavage and bedding. These relationships are enhanced when extension and compression are roughly coaxial, then favoring the clustering of axes of the magnetic ellipsoid. Even when extreme inversion occurs and the early, extensional fabric is obliterated, magnetic fabrics provide information about the interaction between preferred deformation directions associated with the main stages in basin evolution.

AB - Positive tectonic inversion of sedimentary basins has been recognized as one of the primary mechanisms of mountain building and intraplate deformation. Reconstructing the tectonic history of basins is relatively easy for the inversion stage but becomes more difficult for the basinal stage, especially when strong deformation involving cleavage development is associated with the subsequent compressional tectonics. Since tectonic markers for the extensional episodes are not commonly well developed, Anisotropy of Magnetic Susceptibility (AMS) has provided recently a tool for analyzing early stages in the evolution of sedimentary basins, even in the absence of other outcrop-scale mesostructures. Here, we expose and discuss the applicability of magnetic fabrics (by means of AMS) to different types of intra-plate sedimentary basins in the Western Tethys region formed under extensional or transtensional regimes and which underwent different inversion styles (total or partial inversion, with or without cleavage development, forming part of compressional thrust sheets, etc.) owing to specific particular p-T conditions and structural controls. Factors such as lithology, magnetic mineralogy, position within the sedimentary pile and deformation intensity are key to interpret the obtained magnetic fabrics in terms of tectonic evolution. A basin classification is proposed according to inversion styles and magnetic fabrics: Where inversion did not involve cleavage development, magnetic lineation is parallel to the stretching direction corresponding to the extensional stage. The transition between non-cleaved to inversion-related cleaved units is marked by the switch of magnetic lineations from parallel to extension to parallel to the intersection lineation between cleavage and bedding. These relationships are enhanced when extension and compression are roughly coaxial, then favoring the clustering of axes of the magnetic ellipsoid. Even when extreme inversion occurs and the early, extensional fabric is obliterated, magnetic fabrics provide information about the interaction between preferred deformation directions associated with the main stages in basin evolution.

KW - AMS

KW - Intra-plate sedimentary basins

KW - Inversion tectonics

KW - Magnetic mineralogy

KW - Western Tethys

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U2 - 10.1016/j.tecto.2018.08.005

DO - 10.1016/j.tecto.2018.08.005

M3 - Review article

VL - 745

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EP - 23

JO - Tectonophysics

JF - Tectonophysics

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García-Lasanta C, Oliva-Urcia B, Casas-Sainz AM, Román-Berdiel T, Izquierdo-Llavall E, Soto R et al. Inversion tectonics and magnetic fabrics in Mesozoic basins of the Western Tethys: A review. Tectonophysics. 2018 Oct 16;745:1-23. https://doi.org/10.1016/j.tecto.2018.08.005