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Stable isotope analyses have been carried out on rocks and fossils of the Palaeogene carbonate-clastic sequence of the Kutch area in Western India. Isotopic, lithological and palaeontological data indicate that Tertiary sedimentation started in this region in the early middle Eocene (Lutetian) with the development of semi-locked basins (lagoons) in the depressions of pre-existing Deccan Trap basements...
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