Middle Triassic (Anisian) Conodont Biostratigraphy at the Shaiwa Section, Guizhou, South China

Binxian Qin; Martyn Lee Golding; Haishui Jiang; Yan Chen; Muhui Zhang; Li Kang; Dacheng Wang; Jinling Yuan

doi:10.1007/s12583-021-1477-0

Volume 32 Issue 3

Jun 2021

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Journal of Earth Science > 2021 > 32(3): 592-615.

Binxian Qin, Martyn Lee Golding, Haishui Jiang, Yan Chen, Muhui Zhang, Li Kang, Dacheng Wang, Jinling Yuan. Middle Triassic (Anisian) Conodont Biostratigraphy at the Shaiwa Section, Guizhou, South China. Journal of Earth Science, 2021, 32(3): 592-615. doi: 10.1007/s12583-021-1477-0

Citation:

Binxian Qin, Martyn Lee Golding, Haishui Jiang, Yan Chen, Muhui Zhang, Li Kang, Dacheng Wang, Jinling Yuan. Middle Triassic (Anisian) Conodont Biostratigraphy at the Shaiwa Section, Guizhou, South China. Journal of Earth Science, 2021, 32(3): 592-615. doi: 10.1007/s12583-021-1477-0

Citation:

Binxian Qin, Martyn Lee Golding, Haishui Jiang, Yan Chen, Muhui Zhang, Li Kang, Dacheng Wang, Jinling Yuan. Middle Triassic (Anisian) Conodont Biostratigraphy at the Shaiwa Section, Guizhou, South China. Journal of Earth Science, 2021, 32(3): 592-615. doi: 10.1007/s12583-021-1477-0

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Middle Triassic (Anisian) Conodont Biostratigraphy at the Shaiwa Section, Guizhou, South China

doi: 10.1007/s12583-021-1477-0

Binxian Qin^{1, 2
,},
Martyn Lee Golding^{3
,
,
,},
Haishui Jiang^{1, 2
,
,
,},
Yan Chen^{1, 2},
Muhui Zhang^{1, 2},
Li Kang^{1, 2},
Dacheng Wang^{1, 2},
Jinling Yuan⁴

1.
State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430078, China
2.
School of Earth Sciences, China University of Geosciences, Wuhan 430074, China
3.
Geological Survey of Canada, Vancouver V6B 5J3, Canada
4.
Hubei Institute of Geosciences, Wuhan 430034, China

More Information

Corresponding author: Martyn Lee Golding, martyn.golding@canada.ca; Haishui Jiangjiangliuis@163.com
Received Date: 20 Nov 2020
Accepted Date: 11 May 2021
Publish Date: 01 Jun 2021

Abstract

Abstract

The Nanpanjiang Basin is a key area for paleontological and biostratigraphical study of the Middle Triassic. Herein we studied Middle Triassic conodonts from a well-exposed section, the Shaiwa Section, which is located at the northwest end of the Nanpanjiang Basin. A total of six Anisian conodont zones are recognized; in ascending order, they are: the Nicoraella germanica Zone, the Nicoraella kockeli Zone, the Paragondolella bulgarica Zone, the Neogondolella constricta Zone, the Neogondolella cornuta Zone, and the Paragondolella excelsa Zone, respectively. The first occurrence of Nicoraella kockeli defines the Bithynian-Pelsonian boundary. The Pelsonian-Illyrian boundary is defined by the first occurrence of Neogondolella constricta. The Anisian-Ladinian boundary cannot be recognized at the Shaiwa Section due to the absence of conodont indicative of the Ladinian. However, the new conodont data indicate that the uppermost strata could be very close to the boundary. The abrasion of conodont surfaces provides evidence for demonstrating reworking at the Shaiwa Section, which makes some conodonts possess a longer stratigraphic range than previously recorded. The variation in relative abundance between blade-shaped conodonts and platform conodonts indicates that segminiplanate elements probably preferred deeper and oxygenated environments whereas a restricted marine environment is more suitable for segminate elements.
- conodont biostratigraphy,
- Middle Triassic,
- Shaiwa Section,
- Nanpanjiang Basin

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References(130)

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