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New bio- and chemostratigraphic data from southwestern China and its relation to Telychian (Llandovery, Silurian) climate change

Yan, Guanzhou LU ; Lehnert, Oliver LU ; Männik, Peep ; Calner, Mikael LU orcid ; Li, Lixia ; Wei, Xin ; Gong, Fangyi ; Luan, Xiaocong and Wu, Rongchang LU (2025) In Palaeogeography, Palaeoclimatology, Palaeoecology 662.
Abstract

Integrated conodont and carbon isotope data is presented from the Telychian (upper Llandovery, lower Silurian) from the Baicaoping section, Yunnan Province, southwestern China. Three conodont zonal units, in stratigraphically ascending order, the Pterospathodus eopennatus Superzone, Pterospathodus celloni Superzone, and the Pterospathodus amorphognathoides amorphognathoides Zone, are recognized in the Baizitian Formation. The new high-resolution carbon isotope data, combined with the conodont biostratigraphy, reveal a continuous Valgu carbon isotope excursion (Valgu CIE) in the Pt. eopennatus Superzone and the Manitowoc carbon isotope excursion (Manitowoc CIE) in the Pt. celloni Superzone. Because of this, the studied section in the... (More)

Integrated conodont and carbon isotope data is presented from the Telychian (upper Llandovery, lower Silurian) from the Baicaoping section, Yunnan Province, southwestern China. Three conodont zonal units, in stratigraphically ascending order, the Pterospathodus eopennatus Superzone, Pterospathodus celloni Superzone, and the Pterospathodus amorphognathoides amorphognathoides Zone, are recognized in the Baizitian Formation. The new high-resolution carbon isotope data, combined with the conodont biostratigraphy, reveal a continuous Valgu carbon isotope excursion (Valgu CIE) in the Pt. eopennatus Superzone and the Manitowoc carbon isotope excursion (Manitowoc CIE) in the Pt. celloni Superzone. Because of this, the studied section in the Baizitian Formation can be precisely correlated with corresponding sections in Baltica (Viki core section in Estonia) and Laurentia (Composite Jupiter-Chicotte section on Anticosti Island, Canada; Sheboygan 541 section, Michigan Basin, USA), based on biostratigraphy and the comparable shape of the carbon isotope curves. The Manitowoc CIE constitutes a relatively minor positive anomaly in the upper Baizitian Formation (middle Telychian), reflecting a widely identifiable perturbation of the carbon cycle during the Manitowoc Icehouse interval. Our high-resolution δ13Ccarb record improves the Telychian bio- and chemostratigraphic framework and refines global correlations and comparisons between Silurian successions in South China, Baltica, and Laurentia.

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author
; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Conodont biostratigraphy, Manitowoc CIE, Telychian climate change, Valgu CIE
in
Palaeogeography, Palaeoclimatology, Palaeoecology
volume
662
article number
112740
publisher
Elsevier
external identifiers
  • scopus:85215844528
ISSN
0031-0182
DOI
10.1016/j.palaeo.2025.112740
language
English
LU publication?
yes
id
11a624e4-4443-4f7e-9a5e-3275aad72840
date added to LUP
2025-03-20 13:55:57
date last changed
2025-04-17 15:34:44
@article{11a624e4-4443-4f7e-9a5e-3275aad72840,
  abstract     = {{<p>Integrated conodont and carbon isotope data is presented from the Telychian (upper Llandovery, lower Silurian) from the Baicaoping section, Yunnan Province, southwestern China. Three conodont zonal units, in stratigraphically ascending order, the Pterospathodus eopennatus Superzone, Pterospathodus celloni Superzone, and the Pterospathodus amorphognathoides amorphognathoides Zone, are recognized in the Baizitian Formation. The new high-resolution carbon isotope data, combined with the conodont biostratigraphy, reveal a continuous Valgu carbon isotope excursion (Valgu CIE) in the Pt. eopennatus Superzone and the Manitowoc carbon isotope excursion (Manitowoc CIE) in the Pt. celloni Superzone. Because of this, the studied section in the Baizitian Formation can be precisely correlated with corresponding sections in Baltica (Viki core section in Estonia) and Laurentia (Composite Jupiter-Chicotte section on Anticosti Island, Canada; Sheboygan 541 section, Michigan Basin, USA), based on biostratigraphy and the comparable shape of the carbon isotope curves. The Manitowoc CIE constitutes a relatively minor positive anomaly in the upper Baizitian Formation (middle Telychian), reflecting a widely identifiable perturbation of the carbon cycle during the Manitowoc Icehouse interval. Our high-resolution δ<sup>13</sup>C<sub>carb</sub> record improves the Telychian bio- and chemostratigraphic framework and refines global correlations and comparisons between Silurian successions in South China, Baltica, and Laurentia.</p>}},
  author       = {{Yan, Guanzhou and Lehnert, Oliver and Männik, Peep and Calner, Mikael and Li, Lixia and Wei, Xin and Gong, Fangyi and Luan, Xiaocong and Wu, Rongchang}},
  issn         = {{0031-0182}},
  keywords     = {{Conodont biostratigraphy; Manitowoc CIE; Telychian climate change; Valgu CIE}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Palaeogeography, Palaeoclimatology, Palaeoecology}},
  title        = {{New bio- and chemostratigraphic data from southwestern China and its relation to Telychian (Llandovery, Silurian) climate change}},
  url          = {{http://dx.doi.org/10.1016/j.palaeo.2025.112740}},
  doi          = {{10.1016/j.palaeo.2025.112740}},
  volume       = {{662}},
  year         = {{2025}},
}