Mylonitic rocks formed as a result of heterogeneous shear strain in the ductile shear zone, and their fabric directly related to the strain rate, finite strain ellipsoid shape and orientation (Watts and Williams, 1983; Zhang et al., 2010; Mulchrone and Talbot, 2014; Fossen and Cavalcante, 2017).
The boundary between these two terranes is marked by a several-meters-wide NE-trending
mylonitic zone referred to hereafter as Betare-Oya Shear Zone (BOSZ).
Deformation structures in the
mylonitic rocks from the staurolite zone is very interesting as it reveals that these rocks have undergone two major phases of ductile deformation showing opposite sense of shear.
In situ UV-laser 40Ar/39Ar geochronology of muscovite in
mylonitic rocks.
This study suggests that the lake's origins are natural, generated by strong tectonic activity that is characteristic of the Cuicateco lands and the
mylonitic complex of Guelatao de Juarez, defined by lateral and frontal faults from the Eocene-Miocene era (Perez-Gutierrez et al., 2009).
The sole rocks consist of
mylonitic peridotite and sub-ophiolitic metamorphic rock series grading from (garnet-bearing) amphibolite facies to greenschist facies.
However, the weak ductile deformed coal (Figure 1(c)) has a wrinkled or
mylonitic structure, the maceral of coal not easily discriminated by the naked eye; the coal was soft and could be easily pinched into fragments.
The [D.sub.2] deformation is associated with overthrusting of the old units (e.g., the Chah Pazhan ultramafic-mafic rocks) onto the Qatruyeh metacarbonate unit and the development of a
mylonitic foliation in the various rocks units.
* Product: Crushed Stone {general character of material:
Mylonitic Gneiss/Amphibolite)