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Carbon and oxygen isotopic stratigraphy and its palaeoenvironmental significance in Huaxi region of Guiyang during the Early Triassic
Received date: 2014-06-19
Revised date: 2014-09-10
Online published: 2015-05-15
Carbon and oxygen isotopic determination of carbonate samples has been carried out in this work, and the samples were collected from the Upper Permian-Lower Triassic of Gaimao section in Huaxi region of Guiyang. The measured data were used to plot the corresponding evolution curves. Based on the geological settings and lithology, the environmental causes of carbon isotopic variation were discussed and the analysis of palaeoenvironment at that time in the study area was performed according to changes in the curve. The results show that the marine ecological environment in this area was extremely damaged in the earliest Triassic. However, a transient recovery occurred in the early Griesbachian. After that, the ecological environment stepped into a long-term anoxic downturn until the middle Smithian.
SHANG Xiaodong , SHI Guo , WEI Hengye . Carbon and oxygen isotopic stratigraphy and its palaeoenvironmental significance in Huaxi region of Guiyang during the Early Triassic[J]. Journal of University of Chinese Academy of Sciences, 2015 , 32(3) : 363 -372 . DOI: 10.7523/j.issn.2095-6134.2015.03.011
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