During later mylonitization
, the rims of the plagioclase, quartz, hornblende and biotite grains were recrystallized to matrices of minute grains (20-30 pm).
It may undergo mylonitization
, cataclasis, brecciation, geochemical alteration, and development of clay-rich fault gouge.
1995), 4[degrees]Ar/39Ar dating of various size fractions of muscovite formed and/or deformed during mylonitization
yield ages of ca.
The Gawuch Formation has an intrusive contact with the Lowari pluton towards south, however, the contact is now intensely sheared and is occupied by phyllites derived from metavolcanics of the Gawuch Formation through mylonitization
(Tahirkheli et al.
Structural preparation in the pit areas is intense with up to 200ft wide zones of mylonitization
39]Ar plateau ages of 364 [+ or -] 2 Ma and 367 [+ or -] 3 Ma, an indication of the age of mylonitization
and a minimum age for the metasedimentary unit (Reynolds et al.