Latest Permian and Triassic carbonates of Russia: new palaeontological findings, stable isotopes, Ca-Mg ratio, and correlation

Zakharov, Yuri D.; Ukhaneva, N. G.; Ignatyev, Alexander V.; Afanasyeva, Tamara B.; Buryi, Galina I.; Panasenko, E.S.; Popov, A. M.; Punina, T. A.; Cherbadzhi, A.K.

doi:10.1016/s0920-5446(00)80010-2

Cited by 13 publications

(12 citation statements)

References 15 publications

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“…Bulk carbonate carbon-isotopes from Shahreza (Fig. 3) show values between +3.0‰ and +4.5‰ for the Wuchiapingian (=Dzhulfian) Clarkina leveni, Clarkina transcaucasica, Clarkina orientalis, Clarkina inflecta and Clarkina longicuspidata Zones and the lower Changhsingian (=lower Dorashamian) C. hambastensis and C. subcarinata Zones, and these results are consistent with d 13 C data for well-preserved brachiopods from North Caucasus (Zakharov et al, 2000), eastern Greenland (Stemmerik et al, 2001), Jolfa and Meishan . Note that brachiopods are relatively resistant to diagenetic alteration and can be utilized to obtain the carbon (and oxygen and strontium) isotope values of past seawater (e.g., Veizer et al, 1997aVeizer et al, ,b, 1999.…”

Section: Long-term Trendsupporting

confidence: 77%

Carbon-isotope stratigraphy across the Permian–Triassic boundary: A review

Korte

Kozur²

2010

Journal of Asian Earth Sciences

319

173

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Section: Long-term Trendsupporting

confidence: 77%

Carbon-isotope stratigraphy across the Permian–Triassic boundary: A review

Korte

Kozur²

2010

Journal of Asian Earth Sciences

319

173

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“…A decreasing change with fluctuations in carbon isotope values can be seen in the upper part of the Lower Triassic at the Majiashan section. The similarly evolutional trend can be detected on other continent, such as Primorye area [46] , Belaya River, and Sakhrai River in Russia δ 13 C rise to the maximum values of 4.9‰, 3.6‰, 4.2‰ [45] respectively, and from Malaya Laba Region in Caucasus δ 13 C increased to 6.9‰ in the lower Spathian.…”

Section: Spathian Stagesupporting

confidence: 65%

“…The same negative excursion also has been detected at the Emarat section in the north Iran, the Kemer Gorge section in the west of Turkey, the Guryul section in Kashmir, the Idrijca section in Yugoslavia [42,43] , the Nammal Geoge section in the Salt Range of Pakistan [44] as well as some sections in north Caucasia [45] . δ 13 C values fluctuate around 4.0‰ in the uppermost Permian, and range from 1.0‰ to −3.0‰ in the basal part of the Lower Triassic.…”

Section: Griesbachian Stagesupporting

confidence: 65%

Carbon isotope composition of the Lower Triassic marine carbonates, Lower Yangtze Region, South China

et al. 2006

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Studies on three Lower Triassic sections located on the shallow water platform, the deep water slope and in the deep water basin in the Lower Yangtze Region, South China, show the similar trend of carbon isotope evolution. Biostratigraphic correlations among the Lower Triassic sections on the basis of standard conodont zones indicate that three negative shifts occurred in the Griesbachian, the Smithian and the late Spathian stages respectively, and one distinctly positive shift occurred in the early Spathian stage. Trend of carbon isotope evolution of the Lower Triassic reflects some significant changes in the global carbon cycle. Moreover, δ 13 C background values are intensively controlled by palaeogeographic environment. In general, δ 13 C values from deep-water slope carbonates are lighter than those from carbonate platform and heavier than those from deep-water basin carbonates. The positive carbon isotope excursion may be induced by a significant amount of organic carbon burial in marine sediments and increase in primary productivity. The large negative carbon isotope excursions during the Early Triassic in Lower Yangtze Region are interpreted to relate to volcano eruptions based on tuffaceous claystone interlayers observed near the Permian-Triassic boundary, the InduanOlenekian boundary and the Lower Triassic-Middle Triassic boundary.The Early Triassic is a critical period in earth history. A series of events such as volcano eruptions [1,2] , sea-level fluctuations, changes in environmental conditions [3] , mass extinctions [4,5] as well as global negative carbon isotope excursions [6 -9] have been discovered in the uppermost Permian or across the Permian-Triassic boundary. Large scale sea-level rise [10][11][12] , restoration of environment conditions, recovery of ecosystem [13] , including gradual carbon isotope rise [14] occurred in the East Tethyan Ocean in the early Triassic after the mass extinction. In order to describe the features of carbon isotope evolutions in detail, construct evolutional pattern of carbon isotope compositions, discuss the controlling factors on carbon isotope evolution, three sections located on the carbonate platform, deep-water slope and in deep-water

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“…However, when worldwide carbon isotope shifts are observed only in shallow-water carbonates, they are generally attributed to change in primary productivity (Alcala-Herrara et al 1992). Contrary to Isozaki's et al (2007) conclusion, our own results (Zakharov et al 2000(Zakharov et al , 2001; Y.D. show that Permian positive carbon-isotopic anomalies seem to be contemporised with climatic optima and perhaps with transgressions.…”

Section: Upper Jurassic To Lowermost Cretaceouscontrasting

confidence: 76%

Permian to earliest Cretaceous climatic oscillations in the eastern Asian continental margin (Sikhote-Alin area), as indicated by fossils and isotope data

Zakharov

Sha

Popov

et al. 2009

GFF

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Palaeozoological, palaeobotanical and geochemical analyses of Lower Permian to the lowermost Cretaceous sediments exposed in the southern Russian Far East (Bureya-Jiamusi-Khanka superterrane and the Sergeevka terrane), and higher latitude areas (northern Russian Far East and Spitsbergen) suggest a direct relationship with global climatic events defined by the data from oxygen-isotopic palaeotemperatures. Several positive carbon-isotopic anomalies discovered within the uppermost Cisuralian, Guadalupian, early Lopingian and Aalenian-Bajocian intervals are possibly connected to strong hydrological intermixing of oceanic waters under the influence of considerable thermal gradients.

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Latest Permian and Triassic carbonates of Russia: new palaeontological findings, stable isotopes, Ca-Mg ratio, and correlation

Cited by 13 publications

References 15 publications

Carbon-isotope stratigraphy across the Permian–Triassic boundary: A review

Carbon-isotope stratigraphy across the Permian–Triassic boundary: A review

Carbon isotope composition of the Lower Triassic marine carbonates, Lower Yangtze Region, South China

Permian to earliest Cretaceous climatic oscillations in the eastern Asian continental margin (Sikhote-Alin area), as indicated by fossils and isotope data

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