Abstract
Abstract Raniganj Gondwana basin is the easternmost member of the E-W trending Damodar-Valley Gondwana basin belt, and it has ideally developed Gondwana stratisgraphy and structural setting. The upper coal measures are typically developed and are named after the basin. The basin commonly developed half-graben geometry, and the longer arm as well as the southern boundary of the basin is faulted and responsible for steep downward movement and greater sediment thickness toward the boundary fault. Its northern margin represents unconformity against basement with local fault development. Gondwana sediments are intruded by sills and dykes of mica-lamprophyres followed by dolerite dykes, which have an overlapping relationship with faulting. Raniganj basin has typical extensional rift basin character.
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