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dc.contributor.authorBANERJEE, Sen_US
dc.contributor.authorBHATTACHARYA, SKen_US
dc.contributor.authorSARKAR, Sen_US
dc.date.accessioned2011-08-02T03:37:52Zen_US
dc.date.accessioned2011-12-26T12:53:40Zen_US
dc.date.accessioned2011-12-27T05:40:26Z
dc.date.available2011-08-02T03:37:52Zen_US
dc.date.available2011-12-26T12:53:40Zen_US
dc.date.available2011-12-27T05:40:26Z
dc.date.issued2005en_US
dc.identifier.citationJOURNAL OF EARTH SYSTEM SCIENCE, 114(1), 87-96en_US
dc.identifier.issn0253-4126en_US
dc.identifier.urihttp://dx.doi.org/10.1007/BF02702011en_US
dc.identifier.urihttp://dspace.library.iitb.ac.in/xmlui/handle/10054/8642en_US
dc.identifier.urihttp://hdl.handle.net/10054/8642
dc.description.abstractThe early Mesoproterozoic Rohtas Limestone in the Son valley area of central India represents an. overall shallowing-upward carbonate. succession. Detailed facies analysis of the limestone reveals outer- to inner-shelf deposition in an open marine setting. Wave-ripples, hummocky cross stratifications and edgewise conglomerates argue against a deep marine depositional model for the Rohtas Limestone proposed earlier. Stable isotope analysis of the limestone shows that delta(13)C and delta(18)O values are compatible with the early Mesoproterozoic open seawater composition. The ribbon limestone facies in the Rohtas Limestone is characterized by micritic beds, each decoupled in a lower band enriched and an upper band depleted in dissolution seams. Band-wise isotopic analysis reveals systematic short-term variations. Comparative enrichment of the heavier isotopes in the upper bands is attributed to early cementation from sea water and water derived from the lower band undergoing dissolution because of lowering of pH at depth. The short-term positive shifts in isotopic compositions in almost every upward gradational transition from a seamed band to a non-seamed band support the contention that dissolution seams here are of early diagenetic origin, although their formation was accentuated under overburden pressure.en_US
dc.language.isoenen_US
dc.publisherINDIAN ACADEMY SCIENCESen_US
dc.subjectCombined Flowen_US
dc.subjectCarbonateen_US
dc.subjectEvolutionen_US
dc.subjectDiagenesisen_US
dc.subjectSequencesen_US
dc.subjectOxygenen_US
dc.subjectBasinen_US
dc.subjectAgeen_US
dc.subjectGeochemistryen_US
dc.subjectSystematicsen_US
dc.subject.otherDissolution Seamsen_US
dc.subject.otherRohtas Limestoneen_US
dc.subject.otherStable Isotopesen_US
dc.subject.otherDiagenesisen_US
dc.titleFacies, dissolution seams and stable isotope compositions of the Rohtas Limestone (Vindhyan Supergroup) in the Son valley area, central Indiaen_US
dc.typeArticleen_US


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