ISOTOPIC SIGNATURES OF DEPOSITION AND TRANSFORMATION OF LOWER CAMBRIAN SALIFEROUS ROCKS IN THE IRKUTSK AMPHITHEATER: COMMUNICATION 3. CARBON AND OXYGEN ISOTOPIC COMPOSITIONS IN CARBONATES

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dc.contributor.author Vinogradov V.I.
dc.contributor.author Bujakaite M.I.
dc.contributor.author Kuleshov V.N.
dc.contributor.author Pokrovskii B.G.
dc.contributor.author Belenitskaya G.A.
dc.contributor.author Minaeva M.A.
dc.date.accessioned 2024-12-22T03:48:04Z
dc.date.available 2024-12-22T03:48:04Z
dc.date.issued 2006
dc.identifier https://www.elibrary.ru/item.asp?id=13527615
dc.identifier.citation Lithology and Mineral Resources, 2006, 41, 3, 271-279
dc.identifier.issn 0024-4902
dc.identifier.uri https://repository.geologyscience.ru/handle/123456789/47098
dc.description.abstract In previous communications based on the study of sulfur and strontium, we showed that Lower Cambrian rocks of the Irkutsk Amphitheater underwent a significant epigenetic transformation. All postsedimentary alterations of rocks are related to the influence of water solutions that provoke the direct (physical) dissolution of material and its chemical transformation. In particular, an appreciable portion of anhydrites disappeared from the section due to reduction. Probably, these processes took place several times in the past and they are continuing at present. A similar conclusion was deduced from the strontium isotopic composition of carbonate rocks. Their strontium isotopic composition is usually shifted relative to the primary composition, although the prevalence of sulfate and carbonate rocks in the section promotes the stability of strontium isotopic composition with respect to secondary alterations. The carbon isotope system is even more stable due to the abundance of carbonate rocks in the section. This circumstance is probably responsible for the incapacity of isotope data to serve as obvious evidence of the epigenetic transformation of carbonates. The major elements of the evolution of carbon isotope signature could be retained since the sedimentation stage. © Pleiades Publishing, Inc. 2006.
dc.subject Cambrian
dc.title ISOTOPIC SIGNATURES OF DEPOSITION AND TRANSFORMATION OF LOWER CAMBRIAN SALIFEROUS ROCKS IN THE IRKUTSK AMPHITHEATER: COMMUNICATION 3. CARBON AND OXYGEN ISOTOPIC COMPOSITIONS IN CARBONATES
dc.type Статья
dc.identifier.doi 10.1134/S0024490206030060
dc.subject.age Paleozoic::Cambrian
dc.subject.age Палеозой::Кембрийская


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