Structural Analysis of Nur Pur area, District Chakwal, Salt Range, Punjab Pakistan (P-0975) (MFN 5849)

Abstract

This research is carried out in central to western Salt Range near vicinity of Nurpur village and Kallar Kahar. Surface and subsurface geological data is incorporated to construct two North South geological cross sections. The interpretation suggest that Salt Range Thrust emanates from basal detachment at crystalline evaporites, cuts up section as fault bend folds and terminate as blind thrust on Punjab plain. The strata above the Salt Range Thrust is evolved as multi bend fault bend fold with a series of anticlines and synclines, which are partially eroded and provide sediments to Punjab plain in the South. Tapering of layers is also interpolated to be present in foot wall in order to be in accordance with well data. However, in hanging wall a thrust fault is observed exactly above the foot wall ramp of the thrust system. In the basement rocks, a ramp resulting from pre-existing Normal fault is present which is also interpreted in previous work. The subsurface setting and the surface folds and faults are evolved in response to collapse of competent younger strata over weaker evaporites deposits of Salt Range Formation which manifest the idea of salt tectonics in the region.