Quantitative Stratigraphic Correlation-A Case Study from Two Borehole Sections of Barakar formation, Talchir Coalfield, Orissa

Quantitative stratigraphic correlation of lithounits and microfacies of Barakar succession in two widely separated borehole sections from Talchir coalfield, Orissa display strikingly different results. When major lithounits are considered, one-to-one correspondence between the two sections becomes significant and indicates the continuity of single homogeneous succession deposited under an identical depositional environment. Lack of significant correlation of microfacies, on the other hand, suggests existence of different subenvironments at different places during each phase of sedimentation. Thus a coal seam is likely to be restricted in its lateral continuity and show differences in the nature of floor and roof rocks, which are vital for safe and economic mining.