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- W2972246579 endingPage "109361" @default.
- W2972246579 startingPage "109361" @default.
- W2972246579 abstract "The Ediacaran-Cambrian transition was one of the most significant intervals in geological history, witnessing the origin of the metazoans and major environmental changes. Establishing a precise chronostratigraphic framework for the Ediacaran-Cambrian transition has great significance for understanding the geological and evolutionary processes during this transition. An integrated study on carbonate carbon isotopes and U-Pb zircon dating was conducted within the Liuchapo Formation in the Sifangjing section in northeastern Guizhou Province, South China to recognize the Ediacaran-Cambrian boundary in slope facies of the Yangtze Block. A substantial negative carbonate carbon isotope excursion was recognized within the lower part of the Liuchapo Formation. Moreover, a weighted-mean U-Pb zircon age of 540.7 ± 3.8 (±6.6) Ma was obtained from a tuffaceous interlayer approximately 2 m above the interval of the negative carbon isotope excursion. The carbon isotope and age-dating results indicate that the Ediacaran-Cambrian boundary within the Sifangjing section should be placed in the lower part of the Liuchapo Formation. Additionally, in the Sifangjing section, a distribution of Horodyskia minor extends up to the basal Cambrian, while the last appearance datum (LAD) of Palaeopascichnus jiumenensis correlates to the large negative carbon isotope excursion within the Liuchapo Formation. This relationship indicates that the LAD of the Palaeopascichnus jiumenensis is a potential tool for the stratigraphic correlation of the Ediacaran-Cambrian boundary successions in slope and deep-water basin settings of the Yangtze Block." @default.
- W2972246579 created "2019-09-12" @default.
- W2972246579 creator A5037377117 @default.
- W2972246579 creator A5046992969 @default.
- W2972246579 date "2019-12-01" @default.
- W2972246579 modified "2023-10-15" @default.
- W2972246579 title "Carbonate carbon isotope chemostratigraphy and U-Pb zircon geochronology of the Liuchapo Formation in South China: Constraints on the Ediacaran-Cambrian boundary in deep-water sequences" @default.
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- W2972246579 doi "https://doi.org/10.1016/j.palaeo.2019.109361" @default.
- W2972246579 hasPublicationYear "2019" @default.
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