Cycle—Sequences, Carbon Isotope Features and Glacio–Eustasy of the Triticites Zone in Southern Guizhou

Abstract

AbstractIn light of the principle of sequence stratigraphy, detailed analysis of depositional sequences and systematical carbon isotope measurements were done for the Triticites zone of the typical Late Carboniferous section in the Dushan area of southern Guizhou. Two sequences and seventeen parasequences, which can be correlated with the two sequences and seventeen subsequences in the North American Midcontinent, are distinguished in the Gzhelian, which provides convincing evidence of the global synchroneity of the depositional records. The internal relations between carbon isotope evolution and eustasy were studied and the evolutionary characteristics of carbon isotopes in depositional sequences have been summarized.