Evidences of Fold Superimposition from ...

The granulite facies terrain of the Eastern Ghats Mobile Belt (EGMB) is significantly important due to its complicated tectonic setting attained in response to polyphase deformation and related metamorphic episodes. Repeated deformation, upheaval and burial of rocks seem related to interaction of different crustal blocks characterized with collisional tectonics and extensive igneous activity during Archean Era. Polyphase deformed rocks display multidirectional tectonic trends and out of which NE-SW and NW-SE are the most prominent and represented in the form of macroscale superimposed plunging folds. The superimposed folds have given rise to linear ridges, residual hills and intermontane flat pediment surfaces imparting an overall uneven topography to the area. These two cross-cutting trends appear to have affected the whole of the EGMB and demand for proper chronological constraints to be related to specific intracontinental to Gondwanaland events.