Abstract:
The Hazara Arc, a NE-SW trending crescent-shaped trough and situated on the western limb of the Hazara-Kashmir Syntaxis, is the northernmost extremity of the sedimentary succession of the northwestarn margin of the Indian Plate. It is bounded on its north by the Panial Thrust and on its southern side, by the Main Boundary Thrust, The sedimentary geology of Azad Kashmir from Balakot to Muzaffarabad forms the northern tip of the Hazara Arc. The geological history of the Hazara Arc begins with a geosynclinal setting as is evidenced by the turbidite deposits. Afterwards, it remained as a shallow subsiding trough except it deepened during the Upper Cretaceous. In Hazara stratigraphy, the Precambrian-Cambrian unconformable contact is marked by the basal Tanakki Conglomerate. There is invariable stratigraphic break in the succession below the Upper Jurassic. The Cretaceous-Tertiary boundary is marked by the residual deposits as laterite or ferruginous pisolite. The Eocene- Miocene time gap is marked by the basal pebble bed (Fatehjang Member). Although the stratigraphic framework indicates vicissitude in the paleogeographic pattern of the Hazara Arc, the Miocene time determines the Hazara Arc as a hinterland to the adjacent actively subsiding Potwar Basin.
Page(s):
1-11
DOI:
DOI not available
Published:
Journal: Geological Bulletin of the Punjab University, Volume: 24, Issue: , Year: 1989