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Stratigraphic Framework and Depositional Model of Neogene Clinoform Complex Southeastern Makran Accretionary Prism, Pakistan
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 81st EAGE Conference and Exhibition 2019, Jun 2019, Volume 2019, p.1 - 5
Abstract
The study area consists of southeastern onshore part of Makran Accretionary Prism and Porali Trough, Pakistan. 2D seismic lines and measured outcrop sections are used to define a stratigraphic framework by establishing a depositional model for Miocene to late Pliocene succession present in the study area. Integration of the data revealed the presence of clinoform complex at the back of the Kirthar fold and thrust belt towards Makran Accretionary Prism. These clinoform complex represents Hinglaj delta – fan system which piled up spatially Talar Formation as fluvio-deltaic deposits, Parkini as slope deposits and Panjgur as deep marine turbidite deposits. On seismic, Talar – Parkini – Panjgur formations are represented by topsets – foresets – toesets seismic facies respectively. Overall, the delta is classified as either mixed wave and river dominated, or these two processes operated at different times. Hinglaj delta – fan system developed between two giant delta – fan systems i.e. Katawaz – Khojak in the north and Indus to the south. The Hinglaj delta received sediments from the Kirthar fold and thrust belt, southwestern extension of Himalayan Orogenic Belt.