<p>A commercial gas discovery has been confirmed from the Paleoproterozoic volcaniclastic Jardepahar Formation in the Son Valley sector, Vindhayan Basin. To better understand the characteristic of the pay zone and associated source rock, geochemical, sedimentological and source rock analysis were conducted on the cutting samples collected during the drilling of Hatta#D. Sedimentological, geochemical and electro-log signatures enabled the classification of the porcellanite of Jardepahar Formation into three chert-dominated (porcellanite) units and a dolomitic limestone unit. The middle unit, composed of calcareous bedded chert with carbonaceous matter and micro- to nanoscale fractures, has generated significant attention due to the hydrocarbon discovery in the Hatta field by the Oil and Natural Gas Corporation (ONGC) in central India. The textural characteristics of clasts indicates minimal transportation. Geochemical analysis of the middle unit indicates higher biological productivity and more favourable hydrocarbon source facies compared to the upper and lower units. The sediments of the Jardepahar Formation were derived from high-potassic felsic to intermediate volcanic source (s) associated with an active continental margin and were deposited in an anoxic environment. Trace elements analysis indicates the absence of biogenic fractions and minimal chemical alteration. The middle unit not only exhibits source rock potential but also act as reservoir, with the overlying dolomitic limestone serving as an effective top seal.</p>