Succession of tectonic events
From microstructural investigation, it is inferred that at least three stages of cataclasite generation can be distinguished in the fault rocks of SBF. The time gap between these stages of generation cannot be estimated.
The first phase (Ct1) cataclastic rock is further subjected to cataclasis along with the country rocks to form second phase (Ct2) cataclastic rock which contains fragments of older cemented cataclastic rock fragments of Ct1 along with other rotated angular fragments embedded within the groundmass of Ct2 (Fig. 11). The Ct1 and Ct2 are further subjected to third phase (Ct3) cataclasis.