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Iron ore localisation and its controlling factors in the eastern limb of Bonai Keonjhar belt, Odisha, India

Author Affiliations

  • 1P.G. Department of Geology, Utkal University, Bhubaneswar-751004, Orissa, India
  • 2P.G. Department of Geology, Utkal University, Bhubaneswar-751004, Orissa, India

Int. Res. J. Earth Sci., Volume 6, Issue (6), Pages 9-15, June,25 (2018)


The iron formation of Bonai-Keonjhar belt, Keonjhar district of Odisha is deposited an intra-cratonic basin. Lately the deformational terrain morphology and geochemical factors followed by weathering and supergene processes controlled the localization of iron ore deposit. The tabular and bedded form of iron formation leading to BIF and syngenetic Bedded Iron ores are controlled by flat floor morphology of the basin. Tectonic origin of basins and successive deformations causing folding, faulting, joints, fractures etc could be the deciding factor for iron ore deposits in different forms, which address the epigenetic mode of formation. The easterly sloping topography of the eastern limb of BK belt could facilitate the transportation of weathered fragments of iron formation to be deposited as detrital iron deposits (DID) in the western side along the course of the river Baitarani at Inganjharan and Chamakpur. The size of iron clasts in DID are progressively increased from smaller fragments in the western margin to coble to boulder sized iron fragments near by the source of erosion like in Joda east mine area. The syngenetically formed the brecciated iron deposits of Khondbandh and Bansapani areas are formed syngenetically in a disturbed and turbulent environment.


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