LATEST PERMIAN AND TRIASSIC CARBONATES OF RUSSIA: NEW PALAEONTOLOGICAL FINDINGS, STABLE ISOTOPES, CA-MG RATIO, AND CORRELATION
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dc.contributor.author | Zakharov Y.D. | |
dc.contributor.author | Ukhaneva N.G. | |
dc.contributor.author | Ignatyev A.V. | |
dc.contributor.author | Afanasyeva T.B. | |
dc.contributor.author | Buryi G.I. | |
dc.contributor.author | Panasenko E.S. | |
dc.contributor.author | Popov A.M. | |
dc.contributor.author | Punina T.A. | |
dc.contributor.author | Cherbadzhi A.K. | |
dc.date.accessioned | 2021-01-31T12:54:22Z | |
dc.date.available | 2021-01-31T12:54:22Z | |
dc.date.issued | 2000 | |
dc.identifier | https://elibrary.ru/item.asp?id=17796314 | |
dc.identifier.citation | Developments in Palaeontology and Stratigraphy, 2000, 18, , 141-171 | |
dc.identifier.issn | 0920-5446 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/24163 | |
dc.description.abstract | The seven recently discovered events, respectively occurring at (1) early Dorashamian, (2) middle Olenekian, (3) early Anisian, (4) latest Ladinian-?earliest Carnian, (5) late Carnian, (6) early Norian and (7) early Rhaetian intervals, are characterised by anomalously high value of δ 13C (2.5-6.9‰) and a more or less considerable decline in Ca-Mg ratio in organogenic carbonates of the Tethyan Realm The geochemical variations appear explaiable by high bioproductivity of marine basins during periods of transgressions and warm climate. The highest δ 13C values identified in Triassic limestones of the Malaya Laba (6.9‰) and Sakhrai (4.2‰) River basins in North Caucasus and Primorye region (4.9‰) fall at the middle Olenekian Tirolites-Amphistephanites Zone and its equivalents. Oxygen isotope analyses of well preserved brachiopod shells from the Nikitinskaya and Urushtenskaya Suites show that shallow-water temperatures in North Caucasus fluctuated during Early Dorashamian time about 24°C, which is in agreement with our previous data from the Dorashamian Paratirolites kittli Zone in Transcaucasia (around 22-24°C). Similar temperatures appear to have occured in the Tethys at least during the middle Olenekian time. | |
dc.subject | Permian | en |
dc.subject | Triassic | en |
dc.title | LATEST PERMIAN AND TRIASSIC CARBONATES OF RUSSIA: NEW PALAEONTOLOGICAL FINDINGS, STABLE ISOTOPES, CA-MG RATIO, AND CORRELATION | |
dc.type | Статья | |
dc.subject.age | Mesozoic::Triassic | en |
dc.subject.age | Paleozoic::Permian | en |
dc.subject.age | Мезозой::Триасовая | ru |
dc.subject.age | Палеозой::Пермская | ru |
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