Chen, Y, Ye, Q, Jiang, HS et al. (2 more authors) (2019) Conodonts and carbon isotopes during the Permian-Triassic transition on the Napo Platform, South China. Journal of Earth Science, 30 (2). pp. 244-257. ISSN 1674-487X
Abstract
Two Permian–Triassic boundary (PTB) sections (Pojue and Dala) are well exposed in an isolated carbonate platform (the Napo Platform) on the southwestern margin of the Nanpanjiang Basin, South China. These sections provide an insight into the transition across the PTB and a detailed investigation of the conodont biostratigraphy and inorganic carbon isotopes is presented. The PTB at the Pojue Section is placed at the base of Bed 10B (a dolomitized mudstone found below a microbialite horizon), defined by the first occurrence of Hindeodus parvus. At the Dala Section, four conodont zones occur. They are, in ascending order, the Hindeodus parvus Zone, Isarcicella staeschei Zone, Isarcicella isarcica Zone and Clarkina planata Zone. Comparison with the Pojue Section suggests the PTB at Dala also occurs at the base of dolomitized mudstone below a microbialite horizon, although the first occurrence of Hindeodus parvus is towards the top of a microbialite bed: an occurrence that is also seen in other platform sections. The succeeding microbialite beds developed during the ongoing PTB mass extinction phase. This time was characterized by low carbon isotope values, and a microbialite ecosystem that provided a refuge for select groups (bivalves, ostracods and microgastropods) that were likely tolerant of extremely high temperatures.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © China University of Geosciences and Springer-Verlag GmbH Germany, part of Springer Nature 2018. This is a post-peer-review, pre-copyedit version of an article published in Journal of Earth Science. The final authenticated version is available online at: https://doi.org/10.1007/s12583-018-0884-3. |
Keywords: | Permian-Triassic; Napo Platform; conodont biostratigraphy; carbon isotope |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Institute for Applied Geosciences (IAG) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 09 Jan 2019 10:59 |
Last Modified: | 01 Dec 2019 01:39 |
Status: | Published |
Publisher: | China University of Geosciences (Springer) |
Identification Number: | 10.1007/s12583-018-0884-3 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:140796 |