Ghaghar Limestone is the lowermost part of Rohtas Formation of Vindhyan Super Group. It is almost completely covered by thick soil with exposures confined to the Ghaghar river area and nala cuttings. Ghaghar Limestone is interbedded with thin laminations of Shale and gently dipping towards east. Limestone exposed along the Ghaghar river is generally highly folded with 'S' type of folds as the prominent feature. Folds are generally plunging towards east and govern the topography of
the area Erratic secondary dolomitization can also be seen.
On the basis of geological investigation carried out so far in Ghaghar block -IV tentative reserve of about 40 million tonnes of cement grade limestone has been estimated with an average chemical composition of CaO 43% MgO < 3.5% and Si02 12.5%.
* Manufacture of cement
* Metallurgical use(steel making)
* Chemical Industries
* Sugar Industries
* Paper Industries
* Manufacture of Lime(CaO)
* Dimensional Stones
* Crushed stone(construction, aggregate & filler)