Magnetic fabrics in the Cabanas Granite (NE Brazil): interplay between emplacement and regional fabrics in a dextral transpressive regime

Emplacement and deformation of the Cachoeirinha pluton (Borborema province, NE Brazil) inferred through petrostructural studies: Constraints on regional strain fields

“…1). Field and AMS studies for both plutons indicate that they were emplaced in a transpressive regime (Neves and Mariano, 1999;Neves et al, 2003). The structures in the Cachoeirinha area indicate that sinistral and dextral shearing occurred simultaneously with NW-SE contraction, in the same fashion as in the central domain.…”

“…The biotite-muscovite-bearing Cabanas granite, which crops out on the southern side of the EPSZ (Fig. 1), contains xenoliths of high-temperature mylonites apparently derived from lithologies of the Caruaru-Arcoverde batholith, indicating intrusion after the onset of the activity in the EPSZ (Neves et al, 2003). The ENE-trending shape of the Cabanas granite, together with the parallelism of magnetic foliations and lineations inside the pluton and the mylonitic fabric of the EPSZ, indicates crystallization under the influence of the dextral transcurrent regime (Neves et al, 2003).…”

Anisotropy of magnetic susceptibility study in two classical localities of the Gastre Fault System, central Patagonia

“…Anisotropy of the magnetic susceptibility is today a standard technique for petrofabric studies in granitoids (e.g. Archanjo et al, 1995Archanjo et al, , 2002Ferré and Améglio, 2000;McNulty et al, 2000;Neves et al, 2003;Zák et al, 2005;D'Eramo et al, 2006;Stevenson et al, 2007; and many others), having outstanding relevance in determination of magmatic lineations, which are hard to measure in the field or in the laboratory using the microscope (Bouchez et al, 1981).…”

An early extensional event of the South China Block during the Late Mesozoic recorded by the emplacement of the Late Jurassic syntectonic Hengshan Composite Granitic Massif (Hunan, SE China)

“…Archanjo and Bouchez, 1997;Callot et al, 2001;De Oliveira et al, 2010;Neves et al, 2003;Talbot et al, 2005a;Turrillot et al, 2011;Wei et al, 2014b), while the secondary magnetic fabrics acquired after the full crystallization of the pluton reflects late tectonic events (e.g. Zhang and Zhu, 1989;Archanjo and Fetter, 2004;Charles et al, 2009).…”