EARLY EOCENE CLIMATE OPTIMUM EVENT AT THE YPRESIAN AGE FROM SHALLOW MARINE DEPOSIT SALTRANGE EASTERN NEO-TETHYS, PAKISTAN
This study dealed with the biostratigraphical analysis of the Nammal Formation in the Nammal Gorge, western Salt Range, Pakistan. The Nammal Formation is located at the Nammal Gorge section with about 76 m in the thickness, and it consists of predominantly shelfal limestone with interbedded shale, recessive limy siltstone, and marl. This research work identified several Genera’s of Foraminiferas, e.g., benthic and planktonic Foraminifera. Benthic foraminifera were observed in large quantities compared to planktons and nano-fossils, and it suggested that the Nammal Formation belongs to the lagoon to open marine environment. This work identified large benthic genera such as Assilina, Alvolina, Algae, Discocyclina Nummulites, Lockhartia, Operculina, and Echinoderm. These genera’s mark neomorphic sparry calcite cement that is often present as binding material between these foraminiferas or lime mud. The large benthic foraminifera marked early Eocene climate optimum globally from different sectors of Tethys.