2018
DOI: 10.1016/j.jsg.2018.09.008
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Kinematics and strain distribution in an orogen-scale shear zone: Insights from structural analyses and magnetic fabrics in the Gavarnie thrust, Pyrenees

Abstract: the pole of the S, C or C' planes and k max axes are parallel to the transport direction and related to ductile S-C structures. Furthermore, the Pj-T changes across the shear zone characterize strain variations: larger Pj and T are found in the basal, most deformed part of the shear zone, and lower values are found where the interaction between Alpine and Variscan-related petrofabrics is stronger. We also interpret the reactivation of Variscan inherited fabrics within the Alpine shear zone. In spite of the het… Show more

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Cited by 17 publications
(26 citation statements)
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References 90 publications
(110 reference statements)
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“…The change from oblate to a more prolate fabric with a lower degree in anisotropy is consistently observed in the vicinity of a thrusts in the models and is common in nature as deformation increases and localizes toward a structure/thrust (Hirt et al., 2004; Kligfield et al., 1981). In general, changes in magnetic fabric, where magnetic foliation is parallel to thrust surface and show low degrees of anisotropy, are in agreement with laboratory experiments (Borradaile & Alford, 1988; Borradaile & Puumala, 1989; Housen et al., 1993; Schöfisch et al., 2021), numerical models (Housen et al., 1993), and field observations (e.g., Averbuch, et al., 1992; Greve et al., 2020; Hirt et al., 2004; Housen et al., 1996; Marcén et al., 2018; Parés and van der Pluijm, 2002, 2004).…”
Section: Discussionsupporting
confidence: 82%
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“…The change from oblate to a more prolate fabric with a lower degree in anisotropy is consistently observed in the vicinity of a thrusts in the models and is common in nature as deformation increases and localizes toward a structure/thrust (Hirt et al., 2004; Kligfield et al., 1981). In general, changes in magnetic fabric, where magnetic foliation is parallel to thrust surface and show low degrees of anisotropy, are in agreement with laboratory experiments (Borradaile & Alford, 1988; Borradaile & Puumala, 1989; Housen et al., 1993; Schöfisch et al., 2021), numerical models (Housen et al., 1993), and field observations (e.g., Averbuch, et al., 1992; Greve et al., 2020; Hirt et al., 2004; Housen et al., 1996; Marcén et al., 2018; Parés and van der Pluijm, 2002, 2004).…”
Section: Discussionsupporting
confidence: 82%
“…For example, comparisons of the resulting LPS fabric away from thrusts and kinkzones can be made with AMS data from marine clays in Greece and Taiwan (Kissel et al., 1986), mudstones in Taiwan (Lee et al., 1990), sandstones in Zagros mountains (Bakhtari et al., 1998), and different locations in the Pyrenees (Averbuch et al., 1992; Parés and van der Plujim, 2002; Sans et al., 2003). Furthermore, the “thrust‐induced” fabric in our models with magnetic foliation parallel to the thrust is also observed in the Pyrenees (e.g., Averbuch et al., 1992; Marcén et al., 2018), Appalachians (Hirt et al., 2004; Parés and van der Pluijm, 2002, 2004), and the Hikurangi subduction margin (Greve et al., 2020). It can be argued that the procedure of sampling the models impacts the magnetic fabric (e.g., pushing the plastic cube into the model compare to Snowball et al.…”
Section: Discussionsupporting
confidence: 59%
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