Facies analysis and depositional framework of Late Permian-Jurassic sedimentary successions, Western Salt Range, Pakistan: implications for sequence stratigraphic trends and paleogeography of the Neo-Tethys Sea
DOI : 10.48129/kjs.16575
Facies analysis of sedimentary units were carried out by interpreting the evolution in depositional environments during Late Permian to Jurassic times in Western Salt Range, Pakistan. The results support the interpretation of sequence stratigraphic trends and pale geography of first megasequence phase of Neo-Tehthys Sea. Sedimentological details, sequence stratigraphic framework and sea level curve of Late-Permain to Jurassic Strata indicate that the sedimentation was highly influenced by tectonic activities occurring at the vicinities of southwestern part of NeoTethys. During Late Permian, the rift related magmatic activities deceased which led to the onset of transgression and deposition of shelfal carbonates (Wargal Formation). At the end of Late
Permian, the phase of extensive regression due to various rifting events and tectonic uplifts which caused the onset of terrigenous shelves and deltaic successions at various intervals of deposition. The closure of Paleo-Tethys and development of semi-arid hot tropical climate during LateTriassic, resulted the onset of tidal-lagoonal environments in Kingriali Formation. During Early Jurassic, a well-documented northward drift of Pangaea resulted the global cooling and increased humidity, which intern resulted the development of clastic-carbonate mixed sedimentation, whose record is documented in the form of Datta and Samana Suk formations.