Late Paleocene-early Eocene ostracode assemblages from Core UAJ-1, Meting-Jhimpir coal field, Sindh Province, Pakistan

Sixty-two ostracode species were identified from late Paleocene and early Eocene sedimentary rocks recovered from core UAJ-1. The core was taken at Jhimpir, approximately 10 km northwest of Sonda, in the Meting-Jhimpir coal field, southern Sindh Province. The 120 m interval cored includes rocks of the Meting Limestone Member of the Laki Formation, the Sohnari Formation, and rocks questionably representing the Lakhra Formation. Based on the stratigraphic distribution of the ostracode species, three assemblage zones are recognized. The lowest assemblage zone ranges from 176 to 143 m in the Sohnari/Lakhra transition. The middle assemblage zone ranges from 143 to 88 m in the upper part of the Sohnari Formation and lower part of the Meting Limestone. The highest assemblage zone ranges from 88 to 50 m, and incorporates ail of the Meting Limestone present in the core. Taxa that occur in the Sohnari Formation are different from those that were used to characterize the Lakhra Formation in core UAK-5, indicating that the Sohnari in core UAJ-1 represents younger deposition.